Abstract
SUMMARYMeiotic studies in the pollen mother cells and embryo-sac mother cells were undertaken in Brassica oxyrrhina Coss. which carry several agronomically important traits. Unlike the earlier reports suggesting higher chiasma frequency on the female side, presently higher chiasma frequency was observed in the male sex cells. It is concluded that the chiasma formation in the two sex cells is regulated by different controlling systems of genes.
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