Abstract
IN our preliminary report1 on vernalization of mustard (Brassica juncea, Hooker Type 27) it was shown that even seeds previously soaked which remain unsplit during the period of chilling are vernalized. Though the degree of vernalization induced by the same dose of chilling is greater in seeds which sprout during the period, only unsplit chilled seeds offer practical agricultural possibilities, since the latter can be dried without impairment of subsequent germinating capacity. Four other strains of Indian mustard—Types C.9, C.11, Raya O.B.1, and yellow sarson—have all since been found to respond to vernalization. For the same dose of chilling, the shortening of the vegetative period (from sowing to opening of the first flower) of plants from unsplit chilled seeds have been found to vary according to the strain.
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References
Sen, B., and Chakravarti, S. C., Ind. J. Agric. Sci., 8, 245 (1938).
Lojkin, M., Contr. Boyce Thompson Inst., 8, 237 (1936).
Gregory, F. G., and Purvis, O. N., Ann. Bot., N.S., 2, 237 (1938).
Bulletin 17, Imperial Bureau of Plant Genetics (1935).
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SEN, B., CHAKRAVARTI, S. Vernalization of Mustard. Nature 149, 139–140 (1942). https://doi.org/10.1038/149139a0
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DOI: https://doi.org/10.1038/149139a0
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