Abstract
THE phenomenon of vernalization, namely, the acceleration of ear formation in winter varieties of cereals by exposing the germinating seed to low temperature, is now well known1. The underlying cause of this effect of low temperatures is by no means clear. Enzymatic changes in the fruit external to the embryo have been postulated by Richter and others. Experiments to test such possible changes or hormone effects have been performed by Krasnoseljskaja-Maxomova in which endosperm of winter and spring varieties has been interchanged. Similar experiments have been repeated by Sereiskii and Sluckaja, and interchange of embryos has also been tried. The former investigator claims positive results which, however, the latter investigators failed to substantiate.
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Vernalisation and Phasic Development of Plants. Bull. 17 Imperial Bureau of Plant Genetics.
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GREGORY, F., PURVIS, O. Vernalization. Nature 138, 249 (1936). https://doi.org/10.1038/138249b0
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DOI: https://doi.org/10.1038/138249b0
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