EFFECT OF CYTOMIXIS ON MALE MEIOSIS IN DIFFERENT POPULATIONS OF POLYPOGON FUGAX NEES EX STEUD. FROM

Meiotic studies were carried on four populations of Polypogon fugax from district Kangra (Himachal Pradesh). All the presently worked out populations on the basis of recognized base number x=7, are hexaploid with haploid chromosome number, n=21. The present study reports spontaneous cytomixis in 3 populations of P. fugax more frequently at diakinesis and M-I. In addition to cytomixis, other meiotic abnormalities like interbivalent connections, chromosome stickiness, unoriented bivalents, laggards, etc. have been worked out for the first time resulting in heterogenous sized pollen grains with reduced pollen fertility.

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