Reproductive Biology And Taxonomy Of Vascular Plants

Author : J. G. Hawkes
Publisher : Elsevier
Page : 184 pages
File Size : 54,5 Mb
Release : 2013-09-17
Category : Nature
ISBN : 9781483223971

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Reproductive Biology and Taxonomy of Vascular Plants by J. G. Hawkes Pdf

Reproductive Biology and Taxonomy of Vascular Plants is a collection of papers presented at the Conference on Reproductive Biology and Taxonomy of Vascular Plants, held at the Department of Botany, University of Birmingham on April 23-25, 1965. The conference primarily explores the reproductive biology of flowering plants and ferns to arrive at a better understanding of variation patterns and modes of evolution. This book is divided into six chapters and begins with a discussion on the breeding systems, variation and adaptation. The next chapters survey the practical implications of knowledge of breeding systems and other aspects of the reproductive biology of flowering plants, as well as the pollination mechanisms in orchids and the evolution of this family in relation to insect evolution. These chapters include an account of the foraging behavior of honey bees and its importance to the botanist in delineating the behavior of the insects that pollinate the plants. Other chapters deal with the mechanisms of plant dispersal and establishment, the aspects of seed dormancy, and germination and reproductive capacity related to evolutionary processes. The concluding chapters explore the many aspects of apomixis in its wider sense and survey how the variation patterns of apomicts were due to this special mode of reproduction. This book is directed primarily to botanists.

Author : John Gregory Hawkes
Publisher : Pergamon
Page : 183 pages
File Size : 47,5 Mb
Release : 1966-01
Category : Biology
ISBN : OCLC:65895404

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Reproductive Biology and Taxonomy of Vascular Plants by John Gregory Hawkes Pdf

Author : Botanical Society of the British Isles,Botanical Society of the British Isles. Conference
Publisher : Unknown
Page : 183 pages
File Size : 47,5 Mb
Release : 1966
Category : Botany
ISBN : OCLC:502359586

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Reproductive Biology and Taxonomy of Vascular Plants by Botanical Society of the British Isles,Botanical Society of the British Isles. Conference Pdf

Author : Albert E. Radford
Publisher : HarperCollins Publishers
Page : 924 pages
File Size : 48,6 Mb
Release : 1974
Category : Botany
ISBN : HARVARD:32044107268823

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Vascular Plant Systematics by Albert E. Radford Pdf

Author : Elizabeth A. Kellogg
Publisher : Springer
Page : 416 pages
File Size : 50,9 Mb
Release : 2015-05-18
Category : Science
ISBN : 9783319153322

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Flowering Plants. Monocots by Elizabeth A. Kellogg Pdf

This volume is the outcome of a modern phylogenetic analysis of the grass family based on multiple sources of data, in particular molecular systematic studies resulting from a concerted effort by researchers worldwide, including the author. In the classification given here grasses are subdivided into 12 subfamilies with 29 tribes and over 700 genera. The keys and descriptions for the taxa above the rank of genus are hierarchical, i.e. they concentrate upon characters which are deemed to be synapomorphic for the lineages and may be applicable only to their early-diverging taxa. Beyond the treatment of phylogeny and formal taxonomy, the author presents a wide range of information on topics such as the structural characters of grasses, their related functional aspects and particularly corresponding findings from the field of developmental genetics with inclusion of genes and gene products instrumental in the shaping of morphological traits (in which this volume appears unique within this book series); further topics addressed include the contentious time of origin of the family, the emigration of the originally shade-loving grasses out of the forest to form vast grasslands accompanied by the switch of many members to C4 photosynthesis, the impact of herbivores on the silica cycle housed in the grass phytoliths, the reproductive biology of grasses, the domestication of major cereal crops and the affinities of grasses within the newly circumscribed order Poales. This volume provides a comprehensive overview of existing knowledge on the Poaceae (Gramineae), with major implications in terms of key scientific challenges awaiting future research. It certainly will be of interest both for the grass specialist and also the generalist seeking state-of-the-art information on the diversity of grasses, the most ecologically and economically important of the families of flowering plants.

Author : B.M. Johri,P.S. Srivastava
Publisher : Springer Science & Business Media
Page : 320 pages
File Size : 41,9 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783642501333

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Reproductive Biology of Plants by B.M. Johri,P.S. Srivastava Pdf

Reproductive Biology of Plants is a comparative account of reproduction in viruses, bacteria, cyanobacteria, algae, fungi, lichens, bryophytes, pteridophytes, gymnosperms and angiosperms, each chapter written by an expert in the field. Special emphasis is placed on the truly comparative approach illustrating the vast range from simplicity to complexity in structure and function with respect to the various organisms.

Author : George Christopher Williams
Publisher : Princeton University Press
Page : 220 pages
File Size : 41,7 Mb
Release : 1975-03-21
Category : Science
ISBN : 0691081522

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Sex and Evolution by George Christopher Williams Pdf

This book explores the relationship between various types of reproduction and the evolutionary process. Starting with the concept of meiosis, George C. Williams states the conditions under which an organism with both sexual and asexual reproductive capacities will employ each mode. He argues that in low-fecundity higher organisms, sexual reproduction is generally maladaptive, and persists because there is no ready means of developing an asexual alternative. The book then considers the evolutionary development of diverse forms of sexuality, such as anisogamy, hermaphroditism. and the evolution of differences between males and females in reproductive strategy. The final two chapters examine the effect of genetic recombination on the evolutionary process itself.

Author : William F. Grant
Publisher : Elsevier
Page : 690 pages
File Size : 44,7 Mb
Release : 2013-09-25
Category : Nature
ISBN : 9781483273709

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Plant Biosystematics by William F. Grant Pdf

Plant Biosystematics is a compendium of papers from a symposium titled "Plant Biosystematics: Forty Years Later" held in Montreal in July 1983. This collection reviews the current field of biosystematics, particularly the evolution of natural biota, and how plant biosystematics can contribute to the welfare of humans. One paper reviews biosystematics, compares new approaches, and discusses the latest trend in comparative, molecular evolution of genes. One author discusses the cytology and biosystematics concerning the discontinuities and genetic independence occurring in the evolutionary process. Another author discusses chromosome pairing in species and hybrids that includes models of chromosome pairing in diploids. The text also describes chromosome banding and biosystematics, as well as the problems of chromosome banding that should be addressed to in future research. With estimates of the number of species being threatened with extinction numbering around 20,000 one paper address the issue of conservation and biosystematics. The author suggests that more biological information should be published to avoid duplication of effort, and possibly drive scientists to have their views more widely felt. Agriculturists, botanists, conservationists, environmentalists, and researchers in the field of botany, conservation, and plant genealogy will find this book valuable.

Author : Charles L. Argue
Publisher : Springer Science & Business Media
Page : 207 pages
File Size : 44,7 Mb
Release : 2011-09-21
Category : Science
ISBN : 9781461406228

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The Pollination Biology of North American Orchids: Volume 2 by Charles L. Argue Pdf

Recent studies have revealed remarkable complexity and diversity in orchid-pollinator relationships. These studies comprise a vast literature currently scattered in numerous, often obscure, journals and books. The Pollination Biology of North American Orchids brings together, for the first time, a comprehensive treatment of this information for all native and introduced North American orchids found north of Mexico and Florida. It provides detailed information on genetic compatibility, breeding systems, pollinators, pollination mechanisms, fruiting success, and limiting factors for each species. Distribution, habitat, and floral morphology are also summarized. In addition, detailed line drawings emphasize orchid reproductive organs and their adaptation to known pollinators. This, the second of two volumes, treats the subfamily Orchidoideae with the tribe Cranichideae. This is followed by examination of the seven North American tribes of subfamily Epidendroideae and the single North American tribe of subfamily Vanilloideae. The Pollination Biology of North American Orchids will be of interest to both regional and international audiences including: Researchers and students in this field of study who are currently required to search through the scattered literature to obtain the information gathered here. Researchers and students in related fields with an interest in the co-evolution of plants and insects. Conservation specialists who need to understand both the details of orchid reproduction and the identity of primary pollinators in order to properly manage the land for both. Orchid breeders who require accurate and current information on orchid breeding systems. General readers with an interest in orchid biology. Charles Argue, Ph.D., is a plant biologist at the University of Minnesota specializing in the study of pollen grains. His articles have appeared in numerous journals including the American Journal of Botany, International Journal of Plant Sciences (formerly Botanical Gazette), Botany (formerly Canadian Journal of Botany), Grana, Pollen et Spores, North American Native Orchid Journal, The Native Orchid Conference Journal, Fremontia, and as chapters in a number of books. .

Author : Clive A. Stace
Publisher : Cambridge University Press
Page : 276 pages
File Size : 41,7 Mb
Release : 1989
Category : Science
ISBN : 0521427851

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Plant Taxonomy and Biosystematics by Clive A. Stace Pdf

A concise, up-to-date and fully-integrated discussion of present-day plant taxonomy.

Author : Marc Ereshefsky
Publisher : MIT Press
Page : 432 pages
File Size : 54,8 Mb
Release : 1992
Category : Psychology
ISBN : 0262050447

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The Units of Evolution by Marc Ereshefsky Pdf

The Fundamentals series introduces students to the principles of the law by way of clear text combined with visual aids, tools and diagrams to enable an easy understanding of the subject without sacrificing the detail that is required for proper comprehension. Each title assumes no level of prior knowledge, allowing the book to be used for those new to the subject and for distance learning. Criminal Law - The Fundamentals includes full coverage of all topics likely to be studied on Criminal Law courses and it includes summaries of the key Law Commission's proposals for reform where relevant.

Author : Lenn Jerling
Publisher : Routledge
Page : 324 pages
File Size : 52,9 Mb
Release : 2017-11-22
Category : Science
ISBN : 9781351466301

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Apomixis in Plants by Lenn Jerling Pdf

Apomixis in Plants presents a comprehensive review of different aspects of asexual seed formation in plants. This is important in plant research since apomixis could greatly facilitate breeding in important crops. It is also interesting theoretically because it carries problems related to genetic variation and evolution to its extreme. The book features a broad selection of topics, including a historical review of ideas and landmarks in the field; comparisons with other types of asexual reproduction in higher plants and with related phenomena in animals and related plants; a presentation of cytology and embryology of apomicts and the diversified terminology in the field; views on the genetic background of apomixis and environmental effects on its expression; and the interrelation between apomixis and other traits. Additional topics covered include classical and modern theories of sexual versus asexual reproduction; geographical and taxonomical trends in apomicts; ecological implications of apomixis, and a review of future possibilities for using apomixis in plant breeding. Apomixis in Plants is an important reference volume for researchers and students in all areas of botany, ecology, and plant breeding.

Author : Anonim
Publisher : Unknown
Page : 434 pages
File Size : 48,5 Mb
Release : 1976
Category : Agriculture
ISBN : WISC:89048633846

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Quick Bibliography Series by Anonim Pdf

Author : LeRoy Holm,Jerry Doll,Eric Holm,Juan V. Pancho,James P. Herberger
Publisher : John Wiley & Sons
Page : 1158 pages
File Size : 41,7 Mb
Release : 1997-03-05
Category : Gardening
ISBN : 0471047015

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World Weeds by LeRoy Holm,Jerry Doll,Eric Holm,Juan V. Pancho,James P. Herberger Pdf

Responsible for a high proportion of the world's crop losses, weedstake away food that the world badly needs. They decrease thequality and quantity of vegetable fibers, wool, and hides, andinterfere with fishing, irrigation, hydroelectric power production,and the movement of shipping vessels. In order to recognize thetrue magnitude of the weed problem, and to be better equipped todesign effective weed control methods, it is vital to identify andlearn as much as possible about the many different species of thisdestructive agricultural predator. The culmination of four decades of global research, World Weedspresents comprehensive and up-to-date information on over 100weeds--addressing recent changes in such areas as crop tillagemethods, herbicide use, and agricultural runoff. This monumentalwork, featuring a wealth of original data from the authors,provides extensive coverage of the known biology of each species.Each entry contains a full botanical description, plus importantdetails on habitat requirements and distribution, seed production,ecology, physiology, crop impact, and more. Generously suppliedwith dozens of unique illustrations and species distribution mapscovering over 100 countries, this definitive resource boasts anextensive multilingual index of common names, and a massivebibliography with over 3,000 references to facilitate furtherreading and research. World Weeds is a truly masterful referencethat will be celebrated by weed and crop scientists, botanists, andothers for years to come.

Author : Thomas B. Croat
Publisher : Stanford University Press
Page : 984 pages
File Size : 45,8 Mb
Release : 1978
Category : Travel
ISBN : 0804709505

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Flora of Barro Colorado Island by Thomas B. Croat Pdf

Florenwerke, Panama.