Seed dormancy and the control of germination
TLDR
It is argued that adaptation has taken place on a theme rather than via fundamentally different paths and similarities underlying the extensive diversity in the dormancy response to the environment that controls germination are identified.Abstract:
Seed dormancy is an innate seed property that defines the environmental conditions in which the seed is able to germinate. It is determined by genetics with a substantial environmental influence which is mediated, at least in part, by the plant hormones abscisic acid and gibberellins. Not only is the dormancy status influenced by the seed maturation environment, it is also continuously changing with time following shedding in a manner determined by the ambient environment. As dormancy is present throughout the higher plants in all major climatic regions, adaptation has resulted in divergent responses to the environment. Through this adaptation, germination is timed to avoid unfavourable weather for subsequent plant establishment and reproductive growth. In this review, we present an integrated view of the evolution, molecular genetics, physiology, biochemistry, ecology and modelling of seed dormancy mechanisms and their control of germination. We argue that adaptation has taken place on a theme rather than via fundamentally different paths and identify similarities underlying the extensive diversity in the dormancy response to the environment that controls germination.read more
Citations
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Book ChapterDOI
Dormancy in Plant Seeds
Henk W. M. Hilhorst,William E. Finch-Savage,Julia Buitink,William Bolingue,Gerhard Leubner-Metzger +4 more
TL;DR: This overview presents the state-of-the-art of seed dormancy research, focusing mainly on physiological and molecular-genetic aspects in Arabidopsis thaliana, an annual weed, possessing nondeep physiological dormancy.
Journal ArticleDOI
Seed dormancy and germination in three Crocus ser. Verni species (Iridaceae): implications for evolution of dormancy within the genus
TL;DR: Examination of seed ecophysiological traits in three closely related Crocus species suggests an early onset of adaptation to local ecological factors and that phylogeny may represent a significant constraint in the evolution and expression of seed traits in Crocus.
Journal ArticleDOI
Single-seed oxygen consumption measurements and population-based threshold models link respiration and germination rates under diverse conditions
Pedro Bello,Kent J. Bradford +1 more
TL;DR: A new approach is demonstrated that enables the use of single-seed respiratory data, rather than germination data, to characterize the responses of seed populations to diverse conditions, finding consistent and quantitatively comparable relationships between seed respiratory and germination patterns in response to temperature, water potential, abscisic acid, gibberellin, respiratory inhibitors, ageing and priming.
Journal ArticleDOI
Effect of gibberellic acid and potassium nitrate on seed germination of the resurrection plants Ramonda serbica and Ramonda nathaliae
TL;DR: The GA3 and KNO3 treatments of Ramondas seeds are suitable for the higher percentage of germinations and the highest FGP, GRI and CGRI of R. serbica and R. nathaliae were recorded.
References
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Seeds. Ecology, Biogeography, and, Evolution of Dormancy and Germination 2nd ed
Carol C. Baskin,Jerry M. Baskin +1 more
Book
Seeds: Ecology, Biogeography, and, Evolution of Dormancy and Germination
Carol C. Baskin,Jerry M. Baskin +1 more
TL;DR: A Geographical Perspective on Germination Ecology: Tropical and Sub-tropical Zones as discussed by the authors, Temperate and Arctic Zones, and Semi-Arctic Zones: Temperate, Subtropical, and Arctic zones.
Journal ArticleDOI
Seeds: Physiology of Development and Germination.
Book
Seeds: Physiology of Development and Germination
J. D. Bewley,Michael Black +1 more
TL;DR: Seeds: Germination, Structure, and Composition; Development-Regulation and Maturation; Mobilization of Stored Seed Reserves; and some Ecophysiological Aspects.
Journal ArticleDOI
Seed Germination and Dormancy.
TL;DR: This review provides both an overview of the essential processes that are associated with germination and a description of the possible impediments thereto that may result in dormancy.