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The Journal of Heredity 1983:74(1):34-38
© 1983 The American Genetic Association 74:34-38

research-article

Variation in expression of genic male sterility in pearl millet

M. Krishna Rao, and K. Uma Devi

reader and post doctoral fellow, Department of Botany, Andhra University Waltair 530 003, India

Abstract

In pearl millet (Pennisetum americanum (L.) Leeke), male sterility in line Vg 272 in the initial families resulted from degeneration of microspores before first mitosis (PGM-type), but in later generations it resulted from a failure of archespore differentiation or function (Arc-type). Male sterility in this line, as well as in line IP 482, is essentially controlled by a single recessive gene. However, environmental conditions and modifying genes influence expression of male sterility in both lines and leads to distorted segregation ratios.


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