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| cross pollination definition biology: Pollination Biology Leslie Real, 2012-12-02 Pollination Biology reviews the state of knowledge in the field of pollination biology. The book begins by tracing the historical trends in pollination research and the development of the two styles of pollination biology. This is followed by separate chapters on the evolution of the angiosperms; the evolution of plant-breeding systems; the geographical correlations between breeding habit, climate, and mode of pollen transfer; and sexual selection in plants. Subsequent chapters examine the process of sexual selection through gametic competition in Geranium maculatum; the effects of different gene movement patterns on plant population structure; the foraging behavior of pollinators; adaptive nature of floral traits; and competitive interactions among flowering plants for pollinators. The book is designed to provide useful material for advanced undergraduate and graduate students wishing to familiarize themselves with modern pollination biology and also to provide new insights into specific problems for those already engaged in pollination research. The book is intended to be used for both teaching and research. |
| cross pollination definition biology: Pollination Biology Dharam P. Abrol, 2011-10-05 This book has a wider approach not strictly focused on crop production compared to other books that are strictly oriented towards bees, but has a generalist approach to pollination biology. It also highlights relationships between introduced and wild pollinators and consequences of such introductions on communities of wild pollinating insects. The chapters on biochemical basis of plant-pollination interaction, pollination energetics, climate change and pollinators and pollinators as bioindicators of ecosystem functioning provide a base for future insights into pollination biology. The role of honeybees and wild bees on crop pollination, value of bee pollination, planned honeybee pollination, non-bee pollinators, safety of pollinators, pollination in cages, pollination for hybrid seed production, the problem of diseases, genetically modified plants and bees, the role of bees in improving food security and livelihoods, capacity building and awareness for pollinators are also discussed. |
| cross pollination definition biology: Pollen and Pollination Amots Dafni, Michael Hesse, Ettore Pacini, 2012-12-06 Pollen studies make important contributions nature, into three main themes: pollen struc to our knowledge in many interdisciplinary ture and constituents, pollen evolutionary arenas. Pollen identification is widely used in ecology and the pollen-pollinator interface. reconstruction of, e.g., vegetation, the climate Several papers overlap somewhat or are of the past, and plant biodiversity. Studies perhaps even somewhat contradictory and concerning pollen structure, size and form are reflect the author's own ideas and experience. key issues in basic sciences, as, e.g., plant Some could be understood more deeply by taxonomy and evolution, but are also of consulting other closely related articles. The importance in applied fields as, e.g., plant reader is strongly referred to the respective breeding. In pollination studies pollen is literature list of each article. generally used specifically to identify food ofanther ripening and pollen The last steps development (Pacini) and the mature pollen sources of visitors and to reconstruct their foraging routes. Fewer have been devoted to wall structure (Hesse) are key factors to pollen collection mechanisms and to the struc understand pollen dispersal mechanisms in ture and content of pollen in relation to its biotic pollination (Stroo) as well as abiotic pollination (Ackerman). Pollen size, shape, function. |
| cross pollination definition biology: International Review of Cytology , 1992-12-02 International Review of Cytology |
| cross pollination definition biology: Tree Pollination Under Global Climate Change Fernando Ramírez, Jose Kallarackal, 2018-02-05 This brief reviews the pollination aspects of both wild and domesticated fruit tree species in a global climate change context. It explores cross-pollination mediated by insects, vertebrates and abiotic factors, self-pollination and their global warming implications. The authors identify the link between abiotic factors such as precipitation and severe droughts in the context of tree pollination and climate change. Furthermore, pollination and conservation implications in agriculture as well as wild tree populations are explored. Emphasis has been given to fruit trees growing in tropical, subtropical and temperate environments. |
| cross pollination definition biology: Experiments in Plant-hybridisation Gregor Mendel, 1925 |
| cross pollination definition biology: Pollination in Plants Phatlane William Mokwala, Phetole Mangena, 2018-06-06 Plants are the basic source of food for both humans and animals. Most of the food is made of fruits and seeds. For these to be formed, pollination must first take place. This process is the transfer of pollen grains from the anther, which is the male structure of the flower, to the sigma on the female structure of the flower. The transfer process requires agents to be carried out. The agents can be either biotic or abiotic. Nature perfected this arrangement between the pollination agents and the plants. As ecosystems and agricultural systems are changing, this balanced arrangement becomes disturbed. This makes it necessary that pollination systems be studied so that necessary measures can be undertaken to ensure productivity. The chapters of this book present results in research undertaken to improve productivity in crops such as Actinidia chinensis (the kiwifruit), Theobroma cacao (cocoa), and Manicaria saccifera (a tropical forest palm). Some results are presented on tests to check the viability of pollen grains and the delivery of sperm cells through pollen tubes to the embryo sac. These results can serve as guidelines to any person seeking to improve pollination and productivity or to check the efficiency on pollination in ecosystems or agricultural production systems. |
| cross pollination definition biology: Status of Pollinators in North America National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Board on Life Sciences, Committee on the Status of Pollinators in North America, 2007-05-13 Pollinators-insects, birds, bats, and other animals that carry pollen from the male to the female parts of flowers for plant reproduction-are an essential part of natural and agricultural ecosystems throughout North America. For example, most fruit, vegetable, and seed crops and some crops that provide fiber, drugs, and fuel depend on animals for pollination. This report provides evidence for the decline of some pollinator species in North America, including America's most important managed pollinator, the honey bee, as well as some butterflies, bats, and hummingbirds. For most managed and wild pollinator species, however, population trends have not been assessed because populations have not been monitored over time. In addition, for wild species with demonstrated declines, it is often difficult to determine the causes or consequences of their decline. This report outlines priorities for research and monitoring that are needed to improve information on the status of pollinators and establishes a framework for conservation and restoration of pollinator species and communities. |
| cross pollination definition biology: What is Pollination? Bobbie Kalman, 2010 Pollination directly affects the food supply on Earth. Pollinators are threatened by pesticides, invasive species, and habitat destruction, but they are especially threatened by a lack of awareness about their importance. This informative book filled with stunning photographs will help children look at insects in a very different way. |
| cross pollination definition biology: Fertilization in Higher Plants Mauro Cresti, Giampiero Cai, Alessandra Moscatelli, 2012-12-06 Biotechnological methods are opening new ways in plant breeding. They allow novel strategies for improving crop productivity and quality, especially in the agrofood sector. The molecular mechanisms underlying these biotechnological approaches are presented here. Topics included are: pollen development, pollen tube growth, macrosporogenesis and fertilization and the effects of pesticides on sexual plant reproduction. Fertilization in higher plants is a complex process consisting of two events, the fusion of the egg with one sperm cell resulting in the diploid zygote, and the fusion of embryosac nuclei with another sperm cell, leading to a triploid endosperm. This double fertilization is preceded by the pollination process and a long lasting interaction between the dipoid pistil and the haploid pollen tube (progamic phase). Fertilization of flowering plants results in the formation of seeds and fruits, our basic food supply. |
| cross pollination definition biology: Genetic Improvement of Vegetable Crops G. Kalloo, B.O. Bergh, 2012-12-02 Genetic improvement has played a vital role in enhancing the yield potential of vegetable crops. There are numerous vegetable crops grown worldwide and variable degrees of research on genetics, breeding and biotechnology have been conducted on these crops. This book brings together the results of such research on crops grouped as alliums, crucifers, cucurbits, leaf crops, tropical underground and miscellaneous. Written by eminent specialists, each chapter concentrates on one crop and covers cytology, genetics, breeding objectives, germplasm resources, reproductive biology, selection breeding methods, heterosis and hybrid seed production, quality and processing attributes and technology. This unique collection will be of great value to students, scientists and vegetable breeders as it provides a reference guide on genetics, breeding and biotechnology of a wide range of vegetable crops. |
| cross pollination definition biology: Metagenomics for Microbiology Jacques Izard, Maria Rivera, 2014-11-07 Concisely discussing the application of high throughput analysis to move forward our understanding of microbial principles, Metagenomics for Microbiology provides a solid base for the design and analysis of omics studies for the characterization of microbial consortia. The intended audience includes clinical and environmental microbiologists, molecular biologists, infectious disease experts, statisticians, biostatisticians, and public health scientists. This book focuses on the technological underpinnings of metagenomic approaches and their conceptual and practical applications. With the next-generation genomic sequencing revolution increasingly permitting researchers to decipher the coding information of the microbes living with us, we now have a unique capacity to compare multiple sites within individuals and at higher resolution and greater throughput than hitherto possible. The recent articulation of this paradigm points to unique possibilities for investigation of our dynamic relationship with these cellular communities, and excitingly the probing of their therapeutic potential in disease prevention or treatment of the future. - Expertly describes the latest metagenomic methodologies and best-practices, from sample collection to data analysis for taxonomic, whole shotgun metagenomic, and metatranscriptomic studies - Includes clear-headed pointers and quick starts to direct research efforts and increase study efficacy, eschewing ponderous prose - Presented topics include sample collection and preparation, data generation and quality control, third generation sequencing, advances in computational analyses of shotgun metagenomic sequence data, taxonomic profiling of shotgun data, hypothesis testing, and mathematical and computational analysis of longitudinal data and time series. Past-examples and prospects are provided to contextualize the applications. |
| cross pollination definition biology: Transgenic Technology Based Value Addition in Plant Biotechnology Usha Kiran, Malik Zainul Abdin, Kamaluddin, 2020-06-19 Transgenic Technology Based Value Addition in Plant Biotechnology discusses the principles, methodology and applications of transgenic technologies. With step-by-step methods on genome editing techniques and a range of potential applications, from improving crop yield to increasing therapeutic efficacy, this book is a one-stop reference for plant gene editing technologies. It will be of particular interest to researchers interested in plant biotechnology and plant genetics, as well as agricultural scientists and those concerned with medicinal plants. - Includes step-by-step methods to assist students and researchers with genome editing and bioinformatics tools - Highlights a number of applications of plant biotechnology, including how to achieve desired traits, such as improved crop yield - Discusses principles, methodology and applications of transgenic technologies |
| cross pollination definition biology: Principles of Plant Breeding Robert W. Allard, 1999-05-10 Die Pflanzenzucht enthält Elemente individueller und kultureller Selektion - ein Prozeß, den die langerwartete zweite Auflage hinsichtlich sowohl einzelner Pflanzen als auch kompletter Populationen unter die Lupe nimmt. Im Zuge der Aktualisierung des Stoffes wurden neue Themen aufgenommen: moderne Gewebekulturtechniken, molekularbiologische Verfahren, Aspekte der Wechselwirkung zwischen natürlicher und menschlicher Selektion und zwischen Genotyp und Umwelt sowie eine Reihe von Techniken zur Ertragssteigerung in ungünstigen Anbaugebieten. (05/99) |
| cross pollination definition biology: Reproductive Biology of Plants Kishan Gopal Ramawat, Jean-Michel Merillon, K. R. Shivanna, 2016-04-19 Reproductive biology is the basis of species improvement and a thorough understanding of this is needed for plant improvement, whether by conventional or biotechnological methods. This book presents an up to date and comprehensive description of reproduction in lower plants, gymnosperms and higher plants. It covers general plant biology, pollinatio |
| cross pollination definition biology: Pollinators and Pollination Jeff Ollerton, 2021-01-18 A unique and personal insight into the ecology and evolution of pollinators, their relationships with flowers, and their conservation in a rapidly changing world. The pollination of flowers by insects, birds and other animals is a fundamentally important ecological function that supports both the natural world and human society. Without pollinators to facilitate the sexual reproduction of plants, the world would be a biologically poorer place in which to live, there would be an impact on food security, and human health would suffer. Written by one of the world’s leading pollination ecologists, this book provides an introduction to what pollinators are, how their interactions with flowers have evolved, and the fundamental ecology of these relationships. It explores the pollination of wild and agricultural plants in a variety of habitats and contexts, including urban, rural and agricultural environments. The author also provides practical advice on how individuals and organisations can study, and support, pollinators. As well as covering the natural history of pollinators and flowers, the author discusses their cultural importance, and the ways in which pollinator conservation has been portrayed from a political perspective. The book draws on field work experiences in South America, Africa, Australia, the Canary Islands and the UK. For over 30 years the author has spent his career researching how plants and pollinators evolve relationships, how these interactions function ecologically, their importance for society, and how we can conserve them in a rapidly changing world. This book offers a unique and personal insight into the science of pollinators and pollination, aimed at anyone who is interested in understanding these fascinating and crucial ecological interactions. |
| cross pollination definition biology: Insect Pollination of Cultivated Crop Plants Samuel Emmett McGregor, 1976 |
| cross pollination definition biology: Safety of Genetically Engineered Foods National Research Council, Institute of Medicine, Board on Agriculture and Natural Resources, Food and Nutrition Board, Board on Life Sciences, Committee on Identifying and Assessing Unintended Effects of Genetically Engineered Foods on Human Health, 2004-07-08 Assists policymakers in evaluating the appropriate scientific methods for detecting unintended changes in food and assessing the potential for adverse health effects from genetically modified products. In this book, the committee recommended that greater scrutiny should be given to foods containing new compounds or unusual amounts of naturally occurring substances, regardless of the method used to create them. The book offers a framework to guide federal agencies in selecting the route of safety assessment. It identifies and recommends several pre- and post-market approaches to guide the assessment of unintended compositional changes that could result from genetically modified foods and research avenues to fill the knowledge gaps. |
| cross pollination definition biology: Principles of Biology Lisa Bartee, Walter Shiner, Catherine Creech, 2017 The Principles of Biology sequence (BI 211, 212 and 213) introduces biology as a scientific discipline for students planning to major in biology and other science disciplines. Laboratories and classroom activities introduce techniques used to study biological processes and provide opportunities for students to develop their ability to conduct research. |
| cross pollination definition biology: Concepts and Techniques in Genomics and Proteomics N Saraswathy, P Ramalingam, 2011-07-01 Concepts and techniques in genomics and proteomics covers the important concepts of high-throughput modern techniques used in the genomics and proteomics field. Each technique is explained with its underlying concepts, and simple line diagrams and flow charts are included to aid understanding and memory. A summary of key points precedes each chapter within the book, followed by detailed description in the subsections. Each subsection concludes with suggested relevant original references. - Provides definitions for key concepts - Case studies are included to illustrate ideas - Important points to remember are noted |
| cross pollination definition biology: Essentials of Glycobiology Ajit Varki, Maarten J. Chrispeels, 1999 Sugar chains (glycans) are often attached to proteins and lipids and have multiple roles in the organization and function of all organisms. Essentials of Glycobiology describes their biogenesis and function and offers a useful gateway to the understanding of glycans. |
| cross pollination definition biology: Breeding Oilseed Crops for Sustainable Production Surinder Kumar Gupta, 2015-09-25 Breeding Oilseed Crops for Sustainable Production: Opportunities and Constraints presents key insights into accelerating the breeding of sustainable and superior varieties. The book explores the genetic engineering/biotechnology that has played a vital role in transforming economically important traits from distant/wild species to cultivated varieties, enhancing the quality and quantity of oil and seed yield production. Integrated nutrient management, efficient water management, and forecasting models for pests diseases outbreaks and integrated pest and pest management have also added new dimensions in breeding for sustainable production. With the rise in demand, the scientific community has responded positively by directing a greater amount of research towards sustainable production both for edible and industrial uses. Covering the latest information on various major world oil crops including rapeseed mustard, sunflower, groundnut, sesame, oilpalm, cotton, linseed/flax, castor and olive, this book brings the latest advances together in a single volume for researchers and advanced level students. - Describes various methods and systems to achieve sustainable production in all major oilseed crops - Addresses breeding, biology and utilization aspects simultaneously including those species whose information is not available elsewhere - Includes information on modern biotechnological and molecular techniques and production technologies - Relevant for international government, industrial and academic programs in research and development |
| cross pollination definition biology: The Genus Citrus Manuel Talon, Marco Caruso, Fred G. Gmitter jr., 2020-01-21 The Genus Citrus presents the enormous amount of new knowledge that has been generated in recent years on nearly all topics related to citrus. Beginning with an overview of the fundamental principles and understanding of citrus biology and behavior, the book provides a comprehensive view from Citrus evolution to current market importance. Reporting on new insights supported by the elucidation of the citrus genome sequence, it presents groundbreaking theories and fills in previous knowledge gaps. Because citrus is among the most difficult plants to improve through traditional breeding, citrus researchers, institutions and industries must quickly learn to adapt to new developments, knowledge and technologies to address the biological constraints of a unique fruit-tree such as citrus. Despite the challenges of working with citrus, tremendous progress has been made, mostly through advances in molecular biology and genomics. This book is valuable for all those involved with researching and advancing, producing, processing, and delivering citrus products. - Includes the most current research on citrus genomic information - Provides the first detailed description of citrus origin, a new proposal for citrus taxonomy, and a redefinition of the genus Citrus - Details citrus challenges including climate change, global disease impacts, and plant improvement strategies |
| cross pollination definition biology: Pollination Mechanisms, Reproduction and Plant Breeding R. Frankel, Esra Galun, 2012-12-06 view than its own proper males should fecundate each blossom. ANDREW KNIGHT Philosophical Transactions, 1799 Pollination mechanisms and reproduction have a decisive bearing upon rational procedures in plant breeding and crop production. This book intends to furnish' under one cover an integrated botanical, genetical and breeding-methodologi cal treatment of the reproductive biology of spermatophytes mainly angiosperms; it is based on an advanced topical course in plant breeding taught at the Hebrew University of Jerusa lem. We have tried to present a coverage which is concise, but as comprehensive as possible, of the pollination mechanism and modes of reproduction of higher plants, and to illustrate topics, whenever practicable, by examples from cultivated plants. Nevertheless, some relevant publications may have escaped our attention or may not be mentioned because of various limitations. The book is organized into three parts. The first part starts with an evaluation of the significance of the different pollination mechanisms for plant breeding and crop produc tion, describes modes of reproduction in higher plants and discusses ecology and dynamics of pollination. The second part is devoted to crops propagated by self pollination and describes specific breeding procedures for such crops. The third part details sexual reproduction in higher plants and handles three mechanisms involved in the prevention of self pollination and their utilization in plant breeding: sex expres sion, incompatibility, and male sterility. |
| cross pollination definition biology: Molecular Biology of the Cell , 2002 |
| cross pollination definition biology: The Princeton Guide to Evolution David A. Baum, Douglas J. Futuyma, Hopi E. Hoekstra, Richard E. Lenski, Allen J. Moore, Catherine L. Peichel, Dolph Schluter, Michael C. Whitlock, 2017-03-21 The essential one-volume reference to evolution The Princeton Guide to Evolution is a comprehensive, concise, and authoritative reference to the major subjects and key concepts in evolutionary biology, from genes to mass extinctions. Edited by a distinguished team of evolutionary biologists, with contributions from leading researchers, the guide contains some 100 clear, accurate, and up-to-date articles on the most important topics in seven major areas: phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society. Complete with more than 100 illustrations (including eight pages in color), glossaries of key terms, suggestions for further reading on each topic, and an index, this is an essential volume for undergraduate and graduate students, scientists in related fields, and anyone else with a serious interest in evolution. Explains key topics in some 100 concise and authoritative articles written by a team of leading evolutionary biologists Contains more than 100 illustrations, including eight pages in color Each article includes an outline, glossary, bibliography, and cross-references Covers phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society |
| cross pollination definition biology: From Neuroscience to Neurology Stephen Waxman, 2004-11-05 The field of neurology is being transformed, from a therapeutically nihilistic discipline with few effective treatments, to a therapeutic specialty which offers new, effective treatments for disorders of the brain and spinal cord. This remarkable transformation has bridged neuroscience, molecular medicine, and clinical investigation, and represents a major triumph for biomedical research. This book, which contains chapters by more than 29 internationally recognized authorities who have made major contributions to neurotherapeutics, tells the stories of how new treatments for disabling disorders of the nervous system, such as stroke, multiple sclerosis, Parkinson's disease, and migraine, were developed, and explores evolving themes and technologies that offer hope for even more effective treatments and ultimately cures for currently untreatable disorders of the brain and spinal cord. The first part of this book reviews the development of new therapies in neurology, from their inception in terms of basic science to their introduction into the clinical world. It also explores evolving themes and new technologies. This book will be of interest to everyone – clinicians and basic scientists alike – interested in diseases of the brain and spinal cord, and in the quest for new treatments for these disorders.* Presents the evolution of the field of neurology into a therapeutic discipline * Discusses lessons learned from past successes and applications to ongoing work* Explores the future of this field |
| cross pollination definition biology: Floral Biology David G. Lloyd, Spencer C.H. Barrett, 2012-12-06 Studies in floral biology are largely concerned with how flowers function to promote pollination and mating. The role of pollination in governing mating patterns in plant populations inextricably links the evolution of pollination and mating systems. Despite the close functional link between pollination and mating, research conducted for most of this century on these two fundamental aspects of plant reproduction has taken quite separate courses. This has resulted in suprisingly little cross-fertilization between the fields of pollination biology on the one hand and plant mating-system studies on the other. The separation of the two areas has largely resulted from the different backgrounds and approaches adopted by workers in these fields. Most pollination studies have been ecological in nature with a strong emphasis on field research and until recently few workers considered how the mechanics of pollen dispersal might influence mating patterns and individual plant fitness. In contrast, work on plant mating patterns has often been conducted in an ecological vacuum largely devoid of information on the environmental and demographic context in which mating occurs. Mating-system research has been dominated by population genetic and theoretical perspectives with surprisingly little consideration given to the proximate ecological factors responsible for causing a particular pattern of mating to occur. |
| cross pollination definition biology: Biology for AP ® Courses Julianne Zedalis, John Eggebrecht, 2017-10-16 Biology for AP® courses covers the scope and sequence requirements of a typical two-semester Advanced Placement® biology course. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology for AP® Courses was designed to meet and exceed the requirements of the College Board’s AP® Biology framework while allowing significant flexibility for instructors. Each section of the book includes an introduction based on the AP® curriculum and includes rich features that engage students in scientific practice and AP® test preparation; it also highlights careers and research opportunities in biological sciences. |
| cross pollination definition biology: Genetic Engineering of Plants National Research Council, Board on Agriculture, 1984-02-01 The book...is, in fact, a short text on the many practical problems...associated with translating the explosion in basic biotechnological research into the next Green Revolution, explains Economic Botany. The book is a concise and accurate narrative, that also manages to be interesting and personal...a splendid little book. Biotechnology states, Because of the clarity with which it is written, this thin volume makes a major contribution to improving public understanding of genetic engineering's potential for enlarging the world's food supply...and can be profitably read by practically anyone interested in application of molecular biology to improvement of productivity in agriculture. |
| cross pollination definition biology: Breeding Genetics and Biotechnology Brian Thomas, Brian G Murray, Denis J. Murphy, 2017 |
| cross pollination definition biology: The Forgotten Pollinators Stephen L. Buchmann, Gary Paul Nabhan, 2012-06-22 Consider this: Without interaction between animals and flowering plants, the seeds and fruits that make up nearly eighty percent of the human diet would not exist. In The Forgotten Pollinators, Stephen L. Buchmann, one of the world's leading authorities on bees and pollination, and Gary Paul Nabhan, award-winning writer and renowned crop ecologist, explore the vital but little-appreciated relationship between plants and the animals they depend on for reproduction -- bees, beetles, butterflies, hummingbirds, moths, bats, and countless other animals, some widely recognized and other almost unknown. Scenes from around the globe -- examining island flora and fauna on the Galapagos, counting bees in the Panamanian rain forest, witnessing an ancient honey-hunting ritual in Malaysia -- bring to life the hidden relationships between plants and animals, and demonstrate the ways in which human society affects and is affected by those relationships. Buchmann and Nabhan combine vignettes from the field with expository discussions of ecology, botany, and crop science to present a lively and fascinating account of the ecological and cultural context of plant-pollinator relationships. More than any other natural process, plant-pollinator relationships offer vivid examples of the connections between endangered species and threatened habitats. The authors explain how human-induced changes in pollinator populations -- caused by overuse of chemical pesticides, unbridled development, and conversion of natural areas into monocultural cropland-can have a ripple effect on disparate species, ultimately leading to a cascade of linked extinctions. |
| cross pollination definition biology: Encyclopedia of Forest Sciences Julian Evans, John A. Youngquist, 2004-04-02 A combination of broad disciplinary coverage and scientific excellence, the Encyclopedia of Forest Sciences will be an indispensable addition to the library of anyone interested in forests, forestry and forest sciences. Packed with valuable insights from experts all over the world, this remarkable set not only summarizes recent advances in forest science techniques, but also thoroughly covers the basic information vital to comprehensive understanding of the important elements of forestry. The Encyclopedia of Forest Sciences also covers relevant biology and ecology, different types of forestry (e.g. tropical forestry and dryland forestry), scientific names of trees and shrubs, and the applied, economic, and social aspects of forest management. Valuable key features further enhance the utility of this Encyclopedia as an exceptional reference tool. Also available online via ScienceDirect – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. Edited and written by a distinguished group of editors and contributors Well-organized encyclopedic format provides concise, readable entries, easy searches, and thorough cross-references Illustrative tables, figures, and photographs in every entry, produced in full color Comprehensive glossary defines new and important terms Complete, up-to-date coverage of over 60 areas of forest sciences - sure to be of interest to scientists, students, and professionals alike! Editor-in-Chief is the past president of the International Union of Forestry Research Organizations, the oldest international collaborative forestry research organization with over 15,000 scientists from 100 countries |
| cross pollination definition biology: Postharvest Biology and Technology of Tropical and Subtropical Fruits Elhadi M. Yahia, 2011-06-30 While products such as bananas, pineapples, kiwifruit and citrus have long been available to consumers in temperate zones, new fruits such as lychee, longan, carambola, and mangosteen are now also entering the market. Confirmation of the health benefits of tropical and subtropical fruit may also promote consumption further. Tropical and subtropical fruits are particularly vulnerable to postharvest losses, and are also transported long distances for sale. Therefore maximising their quality postharvest is essential and there have been many recent advances in this area. Many tropical fruits are processed further into purees, juices and other value-added products, so quality optimization of processed products is also important. The books cover current state-of-the-art and emerging post-harvest and processing technologies. Volume 1 contains chapters on particular production stages and issues, whereas Volumes 2, 3 and 4 contain chapters focused on particular fruit.Chapters in Volume 3 of this important collection review factors affecting the quality of different tropical and subtropical fruits, concentrating on postharvest biology and technology. Important issues relevant to each specific product are discussed, such as postharvest physiology, preharvest factors affecting postharvest quality, quality maintenance postharvest, pests and diseases and value-added processed products, among other topics. - Along with the other volumes in the collection, Volume 3 is an essential reference for professionals involved in the postharvest handling and processing of tropical and subtropical fruits and for academics and researchers working in the area - Covers current state-of-the-art and emerging post-harvest and processing technologies - Important issues relevant to each particular fruit are discussed, such as postharvest physiology, preharvest factors affecting postharvest quality and pests and diseases |
| cross pollination definition biology: The pollination of cultivated plants: A compendium for practitioners Food and Agriculture Organization of the United Nations, 2018-10-15 More than twenty years ago, the Food and Agriculture Organization of the United Nations contributed to the growing recognition of the role of pollination in agricultural production, with the publication of “The Pollination of Cultivated Plants in the Tropics”. Since that time, the appreciation of pollinators has grown, alongside the realization that we stand to lose them. But our knowledge and understanding of crop pollination, pollinator biology, and best management practices has also expanded over this time.This volume is the first of two “compendiums for practitioners”, sharing expert knowledge on all dimensions of crop pollination in both temperate and tropical zones. The focus in this first volume is on applied crop and system-specific pollination. |
| cross pollination definition biology: Plant Evolution Karl J. Niklas, 2016-08-12 Although plants comprise more than 90% of all visible life, and land plants and algae collectively make up the most morphologically, physiologically, and ecologically diverse group of organisms on earth, books on evolution instead tend to focus on animals. This organismal bias has led to an incomplete and often erroneous understanding of evolutionary theory. Because plants grow and reproduce differently than animals, they have evolved differently, and generally accepted evolutionary views—as, for example, the standard models of speciation—often fail to hold when applied to them. Tapping such wide-ranging topics as genetics, gene regulatory networks, phenotype mapping, and multicellularity, as well as paleobotany, Karl J. Niklas’s Plant Evolution offers fresh insight into these differences. Following up on his landmark book The Evolutionary Biology of Plants—in which he drew on cutting-edge computer simulations that used plants as models to illuminate key evolutionary theories—Niklas incorporates data from more than a decade of new research in the flourishing field of molecular biology, conveying not only why the study of evolution is so important, but also why the study of plants is essential to our understanding of evolutionary processes. Niklas shows us that investigating the intricacies of plant development, the diversification of early vascular land plants, and larger patterns in plant evolution is not just a botanical pursuit: it is vital to our comprehension of the history of all life on this green planet. |
| cross pollination definition biology: A History of Genetics Alfred Henry Sturtevant, 2001 In the small “Fly Room†at Columbia University, T.H. Morgan and his students, A.H. Sturtevant, C.B. Bridges, and H.J. Muller, carried out the work that laid the foundations of modern, chromosomal genetics. The excitement of those times, when the whole field of genetics was being created, is captured in this book, written in 1965 by one of those present at the beginning. His account is one of the few authoritative, analytic works on the early history of genetics. This attractive reprint is accompanied by a website, http://www.esp.org/books/sturt/history/ offering full-text versions of the key papers discussed in the book, including the world's first genetic map. |
| cross pollination definition biology: Incompatibility and Incongruity in Wild and Cultivated Plants Dreux de Nettancourt, 2013-03-14 Advances in plant cell molecular biology have considerably increased our understanding of pollen-pistil barriers, particularly those operated by incompatibility mechanisms, and, at the same time, demonstrated the complexity and diversity of rejection systems once considered to be relatively simple. This book reviews the impressive knowledge acquired in the last century on the biology, particularly the inheritance and population genetics of self-incompatibility, and presents the new approaches to the study of the structure, function and evolution of incompatibility alleles and the analysis of cell-cell recognition and pollen rejection. The different methods now available for transforming the breeding behaviour of higher plants are also discussed. |
| cross pollination definition biology: The Anther William G. D'Arcy, Richard C. Keating, 1996-03-07 Publisher Description |
| cross pollination definition biology: Botany Illustrated Janice Glimn-Lacy, Peter B. Kaufman, 2012-12-06 This is a discovery book about plants. It is for students In the first section, introduction to plants, there are sev of botany and botanical illustration and everyone inter eral sources for various types of drawings. Hypotheti ested in plants. Here is an opportunity to browse and cal diagrams show cells, organelles, chromosomes, the choose subjects of personal inter. est, to see and learn plant body indicating tissue systems and experiments about plants as they are described. By adding color to with plants, and flower placentation and reproductive the drawings, plant structures become more apparent structures. For example, there is no average or stan and show how they function in life. The color code dard-looking flower; so to clearly show the parts of a clues tell how to color for definition and an illusion of flower (see 27), a diagram shows a stretched out and depth. For more information, the text explains the illus exaggerated version of a pink (Dianthus) flower (see trations. The size of the drawings in relation to the true 87). A basswood (Tifia) flower is the basis for diagrams size of the structures is indicated by X 1 (the same size) of flower types and ovary positions (see 28). Another to X 3000 (enlargement from true size) and X n/n source for drawings is the use of prepared microscope (reduction from true size). slides of actual plant tissues. |
Jesus and the Cross - Biblical Archaeology Society
Jan 26, 2025 · The cross remains as you said, as a symbol of the degradation and suffering that Jesus submitted his body as a sacrifice for the sins of humanity. The cross with or without the …
How Was Jesus Crucified? - Biblical Archaeology Society
Apr 16, 2025 · Gospel accounts of Jesus’s execution do not specify how exactly Jesus was secured to the cross. Yet in Christian tradition, Jesus had his palms and feet pierced with nails. …
Roman Crucifixion Methods Reveal the History of Crucifixion
Aug 17, 2024 · Nailing to a cross is “less severe” and “less humiliating” as the condemned dies within a day from loss of blood. Tying to a cross is the most severe form of punishment usually …
The Staurogram - Biblical Archaeology Society
Sep 24, 2024 · But the cross had nothing to do with Jesus Christ. The New Catholic Encyclopedia explains: “The cross is found in both pre-Christian and non-Christian cultures.” Jesus did not …
Ancient Crucifixion Images - Biblical Archaeology Society
Mar 15, 2025 · The cross is the ultimate symbol for the crucifixion of Christ. I give out pennies with the cross punched in them and tell people whether you are an atheist, Muslim, Moonie, etc. …
What is the difference between cross_validate and cross_val_score?
Mar 11, 2021 · Note: When the cv argument is an integer, cross_val_score uses the KFold or StratifiedKFold strategies by default, the latter being used if the estimator derives from …
A Tomb in Jerusalem Reveals the History of Crucifixion and …
Aug 6, 2024 · The second device added to the cross was the suppedaneum, or foot support. It was less painful than the sedile, but it also prolonged the victim’s agony. Ancient historians …
When to use cross-validation? - Data Science Stack Exchange
Jan 23, 2021 · Cross-validation. Hi, I'm deploying machine learning models in my MSc thesis using Weka. I have noticed that when I use 10-fold cross-validation in the training dataset I get …
Cross validation - Data Science Stack Exchange
Apr 17, 2024 · Then cross-validation is only applied to the training data as it is part of the training process. The other issue raised in the linked post do not seem to me specific to cross …
Nested-cross validation pipeline and confidence intervals
Nov 26, 2024 · However, I would like to point out that the "class imbalance problem" is not at all the big problem that it is sometimes made out to be. See the following two threads over at …
Jesus and the Cross - Biblical Archaeology Society
Jan 26, 2025 · The cross remains as you said, as a symbol of the degradation and suffering that Jesus submitted his body as a sacrifice for the sins of humanity. The cross with or without the …
How Was Jesus Crucified? - Biblical Archaeology Society
Apr 16, 2025 · Gospel accounts of Jesus’s execution do not specify how exactly Jesus was secured to the cross. Yet in Christian tradition, Jesus had his palms and feet pierced with …
Roman Crucifixion Methods Reveal the History of Crucifixion
Aug 17, 2024 · Nailing to a cross is “less severe” and “less humiliating” as the condemned dies within a day from loss of blood. Tying to a cross is the most severe form of punishment usually …
The Staurogram - Biblical Archaeology Society
Sep 24, 2024 · But the cross had nothing to do with Jesus Christ. The New Catholic Encyclopedia explains: “The cross is found in both pre-Christian and non-Christian cultures.” Jesus did not …
Ancient Crucifixion Images - Biblical Archaeology Society
Mar 15, 2025 · The cross is the ultimate symbol for the crucifixion of Christ. I give out pennies with the cross punched in them and tell people whether you are an atheist, Muslim, Moonie, etc. …
What is the difference between cross_validate and cross_val_score?
Mar 11, 2021 · Note: When the cv argument is an integer, cross_val_score uses the KFold or StratifiedKFold strategies by default, the latter being used if the estimator derives from …
A Tomb in Jerusalem Reveals the History of Crucifixion and Roman ...
Aug 6, 2024 · The second device added to the cross was the suppedaneum, or foot support. It was less painful than the sedile, but it also prolonged the victim’s agony. Ancient historians …
When to use cross-validation? - Data Science Stack Exchange
Jan 23, 2021 · Cross-validation. Hi, I'm deploying machine learning models in my MSc thesis using Weka. I have noticed that when I use 10-fold cross-validation in the training dataset I get …
Cross validation - Data Science Stack Exchange
Apr 17, 2024 · Then cross-validation is only applied to the training data as it is part of the training process. The other issue raised in the linked post do not seem to me specific to cross …
Nested-cross validation pipeline and confidence intervals
Nov 26, 2024 · However, I would like to point out that the "class imbalance problem" is not at all the big problem that it is sometimes made out to be. See the following two threads over at …
