GENOMIC DAMAGE INDUCED BY INDIVIDUAL AND COMBINATION TREATMENT OF GAMMA RAYS AND ETHYL METHANE SULPHONATE IN CORIANDRUM SATIVUM L VAR. KARISHMA
Aim of the present study is to find out the mutagenic effects of individual and combination treatment of gamma rays and EMS on Corriandrum sativum L. Healthy cremocarp were subjected to different doses of gamma irradiation and EMS in individual and combination set. During microsporogenesis, meiotic investigation of young floral buds was carried out in treated as well as untreated plant materials. Meiotic study clearly exposed the meiotic malfunctioning of pollen mother cells (PMCs) that had
... (PMCs) that had shared various types of cytological abnormalities such as univalents, multivalents, stickiness, precocious movement, stray bivalent, non-orientation, cytomixis, laggard, bridges, unequal separation, micronuclei and disturbed polarities. However, this impairing during meiosis has found to be collinearly associated with concentration i.e. inclining tendency of abnormality percentage along with increasing dose/concentration of mutagens were registered. Perhaps aforementioned chromosomal aberrations may be introduced by asymmetrical distribution of chromatin material in PMCs, had definitely compromised with pollen fertility, resulting the increased frequency of pollen sterility.