Abstract
Meiosis is normal in control plants. As a result of gamma rays or EMS treatment, the plants showed varying degree of meiotic irregularity. This irregularity increased with the higher exposure to gamma rays and higher concentration and duration of EMS treatment. The various types of abnormalities observed in diffrent stages of R1 and M1 generations include stickiness of chromosomes, chromosome fragments, disturbed bivalent associations resulting in multivalent formation, precocious movement, laggards, bridge with or without fragment and formation of micronuclei at meiosis I and II.
The percentage of PMC's showing meiotic abnormalities was less in plants raised from EMS-treated seeds than that of gamma irradiation.
Meiotic irregularities were less in the second generation whereas in the third generation they were noticed occasionally.
