Frequency spectrum and segregating pattern of chlorophyll mutations in sesame (Sesamum indicum L.
Sesame (Sesamum indicum L. variety Rama and Tillotoma were exposed to different doses viz. 250, 300, 350, 400 and 450 Gy of gamma rays from Bhaba Atomic Research Centre (BARC) and grown (along with control) during pre kharif 2015 and 2016 as M1 and M2 generation, respectively, at University experimental farm Visva Bharati. The spectrum of chlorophyll mutation observed in M2 generation was found to be quite narrow as only three kinds namely albina, chlorina and xantha occurred in different treatments. Highest mutation frequency of chlorophyll mutations (1.38% was induced at 350Gy for both variety Rama and Tillotoma, however, chlorina types was more frequent (0.93% other than two types. All the three types of chlorophyll mutations segregated in the ratio of 15 normal: 1 mutant (P