Microspores

Microspores PDF Author: Stephen Blackmore
Publisher: Academic Press
ISBN:
Category : Science
Languages : en
Pages : 368

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Book Description
An understanding of the processes of plant reproduction is increasingly important in the exploitation of plant resources. Microspore formation is a major event in the life cycles of land plants, allowing the transition from diploid sporophyte generation to the haploid gametophyte generation, and varies greatly between taxa in the diversity of processes involved. Despite the wealth of information available, there are very few sources which bring together the results of research work on the reproduction in all the major plant groups.**Microspores fills this gap by reviewing microsporogenesis from a systematic and evolutionary perspective in groups ranging from algae to angiosperms. Special chapters focus on structure, function, cell and molecular processes, and potential biotechnological applications of plant spores and pollen. The result is an up-to-date guide to the applications of modern techniques in the classic area of botany.**This work bridges several disciplines to provide a coherent and authoritative account which will be essential reading for research scientists and lecturers in botany, evolution, ultrastructure, reproductive and developmental biology, and palynology.

Microspores

Microspores PDF Author: Stephen Blackmore
Publisher: Academic Press
ISBN:
Category : Science
Languages : en
Pages : 368

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Book Description
An understanding of the processes of plant reproduction is increasingly important in the exploitation of plant resources. Microspore formation is a major event in the life cycles of land plants, allowing the transition from diploid sporophyte generation to the haploid gametophyte generation, and varies greatly between taxa in the diversity of processes involved. Despite the wealth of information available, there are very few sources which bring together the results of research work on the reproduction in all the major plant groups.**Microspores fills this gap by reviewing microsporogenesis from a systematic and evolutionary perspective in groups ranging from algae to angiosperms. Special chapters focus on structure, function, cell and molecular processes, and potential biotechnological applications of plant spores and pollen. The result is an up-to-date guide to the applications of modern techniques in the classic area of botany.**This work bridges several disciplines to provide a coherent and authoritative account which will be essential reading for research scientists and lecturers in botany, evolution, ultrastructure, reproductive and developmental biology, and palynology.

Microspores Evolution and Ontogeny

Microspores Evolution and Ontogeny PDF Author: S. Blackmore
Publisher: Academic Press
ISBN: 148328817X
Category : Science
Languages : en
Pages : 358

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Book Description
An understanding of the processes of plant reproduction is increasingly important in the exploitation of plant resources. Microspore formation is a major event in the life cycles of land plants, allowing the transition from diploid sporophyte generation to the haploid gametophyte generation, and varies greatly between taxa in the diversity of processes involved. Despite the wealth of information available, there are very few sources which bring together the results of research work on the reproduction in all the major plant groups.**Microspores fills this gap by reviewing microsporogenesis from a systematic and evolutionary perspective in groups ranging from algae to angiosperms. Special chapters focus on structure, function, cell and molecular processes, and potential biotechnological applications of plant spores and pollen. The result is an up-to-date guide to the applications of modern techniques in the classic area of botany.**This work bridges several disciplines to provide a coherent and authoritative account which will be essential reading for research scientists and lecturers in botany, evolution, ultrastructure, reproductive and developmental biology, and palynology.

Evolution and Diversification of Land Plants

Evolution and Diversification of Land Plants PDF Author: Kunio Iwatsuki
Publisher: Springer Science & Business Media
ISBN: 4431659188
Category : Science
Languages : en
Pages : 472

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Book Description
A modern approach to understanding the evolution and diversification of land plants, one of the most exciting areas of plant systematics. It consists of three sections - origin and diversification of primitive land plants; origin and diversification of angiosperms; speciation and mechanisms of diversification - each section corresponding to a major area in plant evolution. In each case, data from molecular, morphological, and paleontological approaches are presented, backed by recent progress and new findings, together with proposals for future research. A guide to the latest in plant systematics, heightening awareness of prospective future problems.

The Evolution of Plant Physiology

The Evolution of Plant Physiology PDF Author: Alan R. Hemsley
Publisher: Elsevier
ISBN: 0080472729
Category : Science
Languages : en
Pages : 510

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Book Description
Coupled with biomechanical data, organic geochemistry and cladistic analyses utilizing abundant genetic data, scientific studies are revealing new facets of how plants have evolved over time. This collection of papers examines these early stages of plant physiology evolution by describing the initial physiological adaptations necessary for survival as upright structures in a dry, terrestrial environment. The Evolution of Plant Physiology also encompasses physiology in its broadest sense to include biochemistry, histology, mechanics, development, growth, reproduction and with an emphasis on the interplay between physiology, development and plant evolution. - Contributions from leading neo- and palaeo-botanists from the Linnean Society - Focus on how evolution shaped photosynthesis, respiration, reproduction and metabolism. - Coverage of the effects of specific evolutionary forces -- variations in water and nutrient availability, grazing pressure, and other environmental variables

Diversity and Evolutionary Biology of Tropical Flowers

Diversity and Evolutionary Biology of Tropical Flowers PDF Author: Peter K. Endress
Publisher: Cambridge University Press
ISBN: 9780521565103
Category : Nature
Languages : en
Pages : 530

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Book Description
A unique account of the structure, biology and evolution of tropical flowering plants.

Early Palaeozoic Biogeography and Palaeogeography

Early Palaeozoic Biogeography and Palaeogeography PDF Author: D.A.T. Harper
Publisher: Geological Society of London
ISBN: 1862393737
Category : Science
Languages : en
Pages : 485

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Book Description
The Early Palaeozoic was a critical interval in the evolution of marine life on our planet. Through a window of some 120 million years, the Cambrian Explosion, Great Ordovician Biodiversification Event, End Ordovician Extinction and the subsequent Silurian Recovery established a steep trajectory of increasing marine biodiversity that started in the Late Proterozoic and continued into the Devonian. Biogeography is a key property of virtually all organisms; their distributional ranges, mapped out on a mosaic of changing palaeogeography, have played important roles in modulating the diversity and evolution of marine life. This Memoir first introduces the content, some of the concepts involved in describing and interpreting palaeobiogeography, and the changing Early Palaeozoic geography is illustrated through a series of time slices. The subsequent 26 chapters, compiled by some 130 authors from over 20 countries, describe and analyse distributional and in many cases diversity data for all the major biotic groups plotted on current palaeogeographic maps. Nearly a quarter of a century after the publication of the ‘Green Book’ (Geological Society, London, Memoir12, edited by McKerrow and Scotese), improved stratigraphic and taxonomic data together with more accurate, digitized palaeogeographic maps, have confirmed the central role of palaeobiogeography in understanding the evolution of Early Palaeozoic ecosystems and their biotas.

Embryology of Flowering Plants: Terminology and Concepts, Vol. 1

Embryology of Flowering Plants: Terminology and Concepts, Vol. 1 PDF Author: T B Batygina
Publisher: CRC Press
ISBN: 1482279916
Category : Science
Languages : en
Pages : 442

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Book Description
The book is divided into three parts: Flower, Anther, and Ovule. The principal aim of this volume (along with the other 3 volumes in the series) is to summarize the classical and current concepts about flower generative organs, their structure and development, and about seed formation processes. The book contains ample material that can be employed

Evolutionary Biology

Evolutionary Biology PDF Author: Max K. Hecht
Publisher: Springer Science & Business Media
ISBN: 1461518474
Category : Science
Languages : en
Pages : 285

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Book Description
This volume is the twenty-ninth in this series, which includes twenty-eight numbered volumes and one unnumbered supplement. The editors continue to focus on critical reviews, commentaries, original papers, and controversies in of the reviews range from anthropology to evolutionary biology. The topics molecular evolution, population biology to paleobiology. Recent volumes have included a broad spectrum of chapters on such subjects as population biology, comparative morphology, paleobiology, molecular phy logenetics, developmental evolutionary biology, systematics, and the history of evolutionary biology. The editors continue to solicit manuscripts in all areas of evolutionary biology. Manuscripts should be sent to anyone of the following: Max K. Hecht, Department of Biology, Queens College of the City University of New York, Flushing, New York 11367; Ross 1. MacIntyre, Department of Genetics and Development, Cornell University, Ithaca, New York 14853; or Michael T. Clegg, Department of Botany and Plant Sciences, University of California, Riverside, California 92521. vii Contents 1. Homology and Embryonic Development Brian K. Hall Introduction .............................................. 1 A Brief History of the Concept of Homology ................. 1 von Baer's Laws ........................................ 4 Germ Layers and Ernst Haeckel ............................ 6 Embryology and Homology ............................... 7 Homology: An Unsolved Problem ............................ 8 Latent Homology ........................................ 8 Serial Homology ........................................ 9 Common Origins and Common Inductions ..................... 12 Mechanisms of Gastrulation ............................... 13 Origin of the Alimentary Canal ............................ 14 Origin of Germ Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 . . . . . . . . . . Induction of Meckel's Cartilage ............................ 15 Induction of the Lens of the Eye ........................... 16 Development of Internal and External Cheek Pouches .......... 18 Selection for Increased Tail Length in Mice .................. 19 Regeneration and Homology .... . . . . . . . . . . . . . . . . . . . . 20 . . . . . . .

Reproductive Biology of Angiosperms

Reproductive Biology of Angiosperms PDF Author: Arun K. Pandey
Publisher: CRC Press
ISBN: 1000729257
Category : Science
Languages : en
Pages : 362

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Book Description
This book is designed to introduce the basics of different aspects of the biology of reproduction in a concise and coherent manner. The book aims to equip students with the fundamentals of the biology of reproduction and also update them with the most recent advances in the field of reproduction. The book has been organized into 16 chapters that introduce and explain different aspects in a stimulating manner. Each chapter is supplemented with a summary and relevant illustrations. A glossary has been added to help the students to understand some important scientific terms. The book offers comprehensive coverage of the important topics including: Flower structure and development Development and structure of male and female gametophytes Pollination biology, fertilization and self-incompatibility Endosperm, embryo and polyembryony Apomixis and seed biology A separate topic on experimental plant reproductive biology (experimental embryology) has been provided, which includes basics of cell, tissue and organ culture, anther culture, pollen culture, flower, ovary, ovule culture, embryo culture, somatic embryogenesis, synthetic seeds, protoplast culture and other aspects of plant biotechnology. The book aims to cater to the needs of the advanced undergraduate and post-graduate students in Botany, Forestry, Agriculture and related fields.

The Tapetum

The Tapetum PDF Author: Michael Hesse
Publisher: Springer Science & Business Media
ISBN: 3709166616
Category : Science
Languages : en
Pages : 156

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Book Description
The anther tapetum, present in all land plants, is a highly specialized, transient tissue surrounding the (micro-)spores and/or pollen grains during their development. Any tapetum malfunction causes male sterility. The exact knowledge of tapetum form and function therefore is indispensable not only for basic research, but also and especially in plant breeding and plant genetics. In fourteen contributions by reknown experts, a comprehensive account of the various characters and functions of the tapetum is provided, covering the areas of cytology, cytophysiology, biochemistry, tapetum development and function.