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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Journal ArticleDOI
Strategies of plant establishment of two Cerrado species: Byrsonima basiloba Juss. (Malpighiaceae) and Eugenia dysenterica Mart. ex DC (Myrtaceae)
Conceição Eneida dos Santos Silveira,Dario Palhares,Luiz Alfredo Rodrigues Pereira,Karina B. D. Pereira,Fernanda Augusta Boato da Silva +4 more
TL;DR: The strategies for seed dispersal and breakage of seed dormancy were different between the species, but their initial growth showed several similarities.
Journal ArticleDOI
Germination capacity of five polar Caryophyllaceae and Poaceae species under different temperature conditions
TL;DR: It is suggested that significant differences in the germinability of the analysed five species and their species-specific germination responses to temperature and cold stratification could result from variations in their physiological dormancy levels.
Journal ArticleDOI
Experimental design and parameter estimation for threshold models in seed germination
TL;DR: In this paper, Monte Carlo simulations were used to determine the bias and precision of nonlinear regression estimators for a wide range of experimental designs and hypothetical plant species, and the results showed that point estimates of model parameters were almost unbiased, while standard errors obtained from non-linear regression were on average 3-4 times smaller than the Monte Carlo precision.
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Exogenous auxin regulates multi-metabolic network and embryo development, controlling seed secondary dormancy and germination in Nicotiana tabacum L.
Zhenhua Li,Jie Zhang,Yiling Liu,Jiehong Zhao,Junjie Fu,Xueliang Ren,Guoying Wang,Jianhua Wang +7 more
TL;DR: Exogenous auxin regulates multi-metabolic networks controlling seed secondary dormancy and germination with superfluous auxin signal activate and is an environmental model that prevents seed germination in an unfavorable condition.
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Re-establishment of latitudinal clines and local adaptation within the invaded area suggest rapid evolution of seed traits in Argentinean sunflower (Helianthus annuus L.)
Fernando Hernández,Fernando Hernández,María Mónica Poverene,María Mónica Poverene,Antonio Francisco Garayalde,Antonio Francisco Garayalde,Alejandro Daniel Presotto,Alejandro Daniel Presotto +7 more
TL;DR: Evidence is provided that support rapid, adaptive evolution (< 70 years) of seed dormancy in the invasive Argentinean sunflower in response to warmer environments found in Argentina, suggesting that crop wild relatives can quickly evolve in responded to novel abiotic conditions.
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.