ISSN:
1573-5087
Keywords:
dormancy
;
germination inhibitory factor
;
abscisic acid
;
gibberellins
;
Avena sativa L.
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Embryos of Avena sativa L. (cv. Moyencourt) show no ‘high temperature dormancy”. The dormancy is induced by the presence of endosperm-aleurone part of the seed. Germination of isolated embryos at 30°C can be prevented by ABA and the inhibition is reversed by GA. Inhibitors of GA synthesis also inhibit embryo germination. The embryos of dormant and non-dormant seeds vary greatly in their sensitivity to exogenous ABA. High temperature dormancy of the entire seeds can be relieved by low concentrations of ethanol. On the basis of these facts a hypothetic model is proposed showing how interaction between endogenous GA and ABA-like inhibitory substance, may regulate the “high temperature dormancy” of the seeds.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00027442
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