The study of cytogenetical behaviour of the natural polyploids and the evaluation of the breeding behaviour of their derivatives have been of particular interest to the geneticists and breeders in crops like Sorghum, Allium, Triticum, etc. The evaluation of the amphiploid progenies also throw much light on the nature of true genetic relationships (Grant, 1956). In this paper an account of morphological variation of the progenies of a colchicine induced amphiploid of F₁ of P. typhoides x P. purpureum is presented and the genetic segregation has been interpreted. The scope for the use of amphiploid progenies is indicated.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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