One plant of translocation heterozygote has been isolated from ethyl methane sulphonate (EMS) treated population sets on a morphological basis in cumin, Cuminum cyminum L. The meiotic analysis in the plant showed the preponderance of ring quadrivalents along with five bivalents in pollen mother cells (PMCs) at metaphase I. Various multiple chromosomal associations along with rings and chains were also observed with some univalents and bivalents. Pollen fertility of the plant reduced

more »

... y to 34.18% against 98.28% in control plants. At anaphase I, 38.13% frequency of unequal segregation (6 : 8) and laggards were observed in 28.81% of PMCs along with 33.05% of regular segregation (7 : 7). The present investigation explains the cytological assessment and consequences in translocation heterozygote induced by EMS treatment.