Asymmetry In Plants

Asymmetry in Plants PDF Book Detail:
Author: Bir Bahadur
Publisher: CRC Press
ISBN: 0429960700
Size: 63.61 MB
Format: PDF, Kindle
Category : Nature
Languages : en
Pages : 387
View: 6157

Get Book

Book Description: Plants exhibit forms of asymmetry analogous to "handedness" in bilaterally symmetrical animals. This book explores the evolutionary significance and development of asymmetry. Examples of genetic control include the direction of tendril or stem coiling of many climbing plants; the so-called spiral phyllotaxy and floral taxy; and contorted petal arrangement is another kind of left- right symmetry in plants; the direction of contortion is fixed in some but not in other plants. The book will underscore tha all phenomena related to handedness start during embryogenesis itself, with the occurrence of embryo rotation. Key selling features: First consolidated book on Plant Handedness Relates handedness, asymmetry and chirality to the evolution of different organizational levels in plant biology Emphasizes handedness as a vital governing force in plant functional evolution Provides a new perspective, hitherto ignored, into plant developemtn and evolution Describes how an age-old phenomenon can give scope for investigation from a very modern interdisciplinary approach

Fluctuating Asymmetry Of Plants Methods And Application

Fluctuating Asymmetry of Plants  Methods and Application PDF Book Detail:
Author: Baranov Sergey
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659707346
Size: 32.55 MB
Format: PDF, ePub
Category :
Languages : en
Pages : 208
View: 1081

Get Book

Book Description: The value of the fluctuating asymmetry shows the relative ineffectiveness of organismic control systems developmental processes. Assessment of the environmental quality is now a very promising approach for the integral characteristic of living organisms. Stability of development is characterized by the level of fluctuating asymmetry in morphological structures. In this monograph the morphogeometric method was applied to assess the FA leaf plate woody plants (birch, oak, linden and maple). Results of the developmental stability monitoring in plant ecosystems were reported on the example of one of the region in Russia.

Pollen Limitation And Network Asymmetry In An Endangered Oak Savannah Ecosystem

Pollen Limitation and Network Asymmetry in an Endangered Oak savannah Ecosystem PDF Book Detail:
Author: Grahame Andrew Gielens
Publisher:
ISBN:
Size: 55.33 MB
Format: PDF, ePub
Category : Biodiversity conservation
Languages : en
Pages : 178
View: 338

Get Book

Book Description: Understanding how changes in biodiversity affect plants and plant-pollinator communities is important for their conservation. I measured the effect of conspecific density and co-flowering diversity on pollen limitation in six plant species at six sites over two years to investigate the effect of the co-flowering community on plant reproduction. Plant patches with high conspecific density generally had higher pollen limitation, although the effect was weak and overall pollen limitation was rare. Co-flowering diversity had little effect on pollen limitation. I also collected flower visitors off plants to produce a plant-pollinator interaction network. Networks were highly asymmetric; in general, interacting species did not rely equally on one another for either floral resources or pollination. Larger networks contained more specialized pollinators that were strongly dependent on the plants they visited, producing very negative network asymmetry. Furthermore, introduced plants but not an introduced pollinator, integrated into the networks similarly to native species.

Mirror Image Asymmetry

Mirror Image Asymmetry PDF Book Detail:
Author: James P. Riehl
Publisher: John Wiley & Sons
ISBN: 9780470588871
Size: 54.74 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 184
View: 941

Get Book

Book Description: An overview of the importance and consequences of asymmetry from molecules to the macroscopic world As scientists have become more capable of probing the structure of three-dimensional objects at the molecular level, the need to understand the concept and the consequences of mirror-image asymmetry—chirality—has increased enormously. Written at an introductory level, Mirror-Image Asymmetry provides an overview of the importance and effects of asymmetry from the atomic and molecular world of physics and chemistry to the organisms and structures that we see and use in our everyday life. The reader will develop a broad appreciation of three-dimensional asymmetry from the microscopic molecular world to the macroscopic world of handedness, automobile driving, windmills, sports, and similar phenomena. The book features: An introduction to basic definitions and the nomenclature of asymmetric and dissymmetric molecules Up-to-date examples of the importance and consequences of asymmetry in modern drug applications, current theories of the origin of asymmetry in nature, and examples of molecular asymmetry in smell, taste, and insect communication Many illustrations, chemical structures, and photographs that enable the reader to connect the actual asymmetrical structures to the different phenomena that depend on structural asymmetry In the 150 years since Louis Pasteur discovered asymmetry in molecular structures, scientists have made great progress in understanding how interactions between chiral molecules influence biochemical processes. This knowledge is leading to very sophisticated asymmetric synthetic techniques that have greatly benefitted many research groups especially those in the pharmaceutical industry. This guide to the role of molecular and macroscopic chirality will inspire students and scientists in chemistry, biology, physics, and drug discovery.

Handbook Of Functional Plant Ecology

Handbook of Functional Plant Ecology PDF Book Detail:
Author: Francisco Pugnaire
Publisher: CRC Press
ISBN: 9780849390418
Size: 74.96 MB
Format: PDF, Mobi
Category : Science
Languages : en
Pages : 920
View: 4556

Get Book

Book Description: "Offers the latest findings and research breakthroughs in plant ecology, as well as consideration of classic topics in environmental science and ecology. This wide-ranging compendium serves as an extremely accessible and useful resource for relative newcomers to the field as well as seasoned experts. Investigates plant structure and behavior across the ecological spectrum, from the leaf to the ecosystem levels."

Kaplan S Principles Of Plant Morphology

Kaplan s Principles of Plant Morphology PDF Book Detail:
Author: Donald Kaplan
Publisher: CRC Press
ISBN: 9781482245196
Size: 49.44 MB
Format: PDF
Category : Plant morphology
Languages : en
Pages : 1200
View: 3189

Get Book

Book Description: Kaplan's Principles of Plant Morphology defines the field of plant morphology, providing resources, examples, and theoretical constructs that illuminate the foundations of plant morphology and clearly outline the importance of integrating a fundamental understanding of plant morphology into modern research in plant genetics, development and physiology. As research on developmental genetics and plant evolution emerges, an understanding of plant morphology is essential to interpret developmental and morphological data. The principles of plant morphology are being brought into studies of crop development, biodiversity and evolution during climate change, and increasingly such researchers are turning to old texts to uncover information about historic research on plant morphology; there is great need for a modern reference and textbook that highlights past studies and provides the synthesis of data necessary to drive our future research in plant morphological and developmental evolution. Key Features Numerous illustrations demonstrating the principles of plant morphology Historical context for interpretations of more recent genetic data Firmly rooted in the principles of studying plant form and function Provides evolutionary framework without relying on evolutionary interpretations for plant form Only synthetic treatment of plant morphology on the market Related Titles Les, D. H. Aquatic Dicotyledons of North America: Ecology, Life History, and Systematics (ISBN 978-1-4822-2502-0) Les, D. H. Aquatic Monotyledons of North America: Ecology, Life History, and Systematics (ISBN 978-1-1380-5493-6) Bowes, B. G. Colour Atlas of Trees and Woody Plants (ISBN 978-0-3674-7398-3) Bahadur, B. et al., eds. Asymmetry in Plants: Biology of Handedness (ISBN 978-1-1385-8794-6)

Organography Of Plants Especially Of The Archegoniata And Spermaphyta Vol 1 Classic Reprint

Organography of Plants  Especially of the Archegoniata and Spermaphyta  Vol  1  Classic Reprint  PDF Book Detail:
Author: K. Goebel
Publisher:
ISBN: 9781332062102
Size: 67.27 MB
Format: PDF
Category : Science
Languages : en
Pages : 302
View: 2092

Get Book

Book Description: Excerpt from Organography of Plants, Especially of the Archegoniata and Spermaphyta, Vol. 1 If the botanical historian should ever write an account of that branch of the Botany of our times which is usually termed Morphology, he will probably look upon the period embraced within the last few years of the present century as one of transition. The conspicuous feature of transition-periods is the suppression of directive influences which have been dominant for a time because they are found to have served their purpose and lead no further. Newer views naturally conflict with the old and even with one another; things are found not to be so simple as was believed, and the old formularies cease to be applicable. This change which has been in progress in Morphology is a consequence of the recognition by botanists that the configuration exhibited by plants is a part of their life-phenomena, and is not merely a hypothetical construction as it was made by the older idealistic Morphology. All the phenomena of life have a definite relationship to environment, and therefore, as I shall endeavour to show in this book, the consideration of the configuration of the organs of plants is not merely a comparative historical criticism, but must take into account all the conditions of environment which we find at the present day. Morphology has to determine in what degree the formation of organs shows an adaptation to external relationships, and to what extent it is dependent upon these and upon internal conditions; and even if the subject be studied from the purely phylogenetic standpoint, such determinations are a necessity, inasmuch as the historical development would be constantly influenced by environment. Phylogenetic speculations are doubtless more attractive than the grappling with the facts, often obscure and apparently insignificant, of the relationships of configuration of the plants around us. It appears to me, however, that to recognize the factors which bring about the development of say a leaf with one side larger than the other is infinitely more important than to construct a phylogenetic hypothesis unsupported by facts. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.