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Understanding Flowers and FloweringAn integrated approach$
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Beverley Glover

Print publication date: 2007

Print ISBN-13: 9780198565970

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780198565970.001.0001

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The Vernalization Pathway of Floral Induction and the Role of Gibberellin

The Vernalization Pathway of Floral Induction and the Role of Gibberellin

Chapter:
(p.52) CHAPTER 6 The Vernalization Pathway of Floral Induction and the Role of Gibberellin
Source:
Understanding Flowers and Flowering
Author(s):

Beverley J. Glover

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198565970.003.0006

Temperature, and particularly vernalization, exposure to a prolonged period of cold, is used by plants to regulate the onset of flowering. This is a sensible adaptation of plants in temperate climates to prevent the risk of autumn germination leading to flowering in winter, a time when pollinators are scarce and freezing temperatures may inhibit seed production. At the same time, the plant growth regulator gibberellin has been shown to be a powerful promoter of flowering in many species. For some time, there was speculation that the vernalization-induced flower induction pathway operated through gibberellins, but we now know, in Arabidopsis at least, that vernalization and gibberellin represent two independent pathways which can both induce flowering. This chapter considers the two pathways separately, before looking at the evidence that they overlap.

Keywords:   Arabidopsis, flower induction, gibberellin, temperature, vernalization

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