Photoperiodism is the response to the length of the day that enables living organisms to adapt to seasonal changes in their environment as well as latitudinal variation. As such, it is one of the most significant andcomplex aspects of the interaction between plants and their environment and is a major factor controlling their growth and development. As the new and powerful technologies of molecular genetics are brought to bear on photoperiodism, it becomes particularly important to place new work in the context of the considerable amount of physiological information which already exists on the subject. This innovative book will be of interest to a wide range of plant scientists, from those interested in fundamental plant physiology and molecular biology to agronomists and crop physiologists.

Key Features

@introbul:Key Features @bul:* Provides a self-sufficient account of all the important subjects and key literature references for photoperiodism * Includes research of the last twenty years since the publication of the First Edition * Includes details of molecular genetic techniques brought to bear on photoperiodism


Ideal for a wide range of plant scientists, from those interested in fundamental plant physiology and molecular biology to agronomists and crop physiologists.

Table of Contents

Introduction. Photoperiodic Control of Flower Initiation: A General Outline. Photoperiodic Timekeeping. Photoperiodic Photoreceptors. Day-Length Perception in Short-Day Plants. Day-Length Perception in Long-Day Plants. The Physiology of Photoperiodic Floral Induction. The Nature and Identity of Photoperiodic Signals. Biochemical and Molecular Aspects of Photoperiodism. Genetic Approaches to Photoperiodism. Photoperiodic Control of Development: Floral Expression. Dormancy in Woody Plants. Vegetative Propagation. Other Effects of Day-Length. Appendix 1: Photoperiodic Classification of Plants. Appendix 2: Effects of Day-Length on the Content of Endogenous Growth Substances.


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© 1997
Academic Press
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About the authors

Brian Thomas

Brian Thomas graduated from University of College of Wales, Aberystwyth where he also obtained his doctorate in plant physiology. Following post-doctoral study in Canada and the UK, he worked as a research scientist at the Glasshouse Crops Research Institute which later became Horticulture Research International. In 1995 he moved to HRI Wellesbourne where he is Head of the Molecular and Environmental Physiology Department. He is currently a Vice President of the Association Internationale de Photobiologie.

Daphne Vince-Prue

Daphne Vince-Prue graduated from the University of London (Wye College) and did postgraduate work in plant physiology at UC Berkeley. She obtained her doctorates at the Universities of Reading and London, and subsequently taught plant physiology to students of horticulture and botany at Reading for most of her career. She has also been a Scientific Adviser and later Head of the Physiology and Chemistry Division at the Glasshouse Crops Research Institute for the Agricultural Research Council. Since her retirement in 1986 she has maintained contacts with research groups working in photoperiodism, and continues her interest in horticulture as a committee member of the Royal Horticultural Society.