Abstract
Tetraploid chromosome number of n=14 chromosomes has been counted in a few plants originating from 0.2 per cent colchicine treatment and in one plant originating from 0.4 per cent colchicine treatment while control plants have revealed n=7 chromosomes. Meiotic irregularities have been noted in the plants originating from colchicine treatment in contrast to regular meiotic divisions observed in the control plants.
Number of stomates per field decreased with the increase in colchicine treatment and stomates and pollen grains of the biggest size were observed in plants originating from 0.4 percent colchicine treatment.
Bifurcation of main stem and dwarf plant with deformed leaves were observed in a few plants originating from colchicine treatment.
Factors responsible for the origin of morphological abnormal types and cytological mechanism responsible for the meiotic irregularities observed have been considered.
