Variability study through mutation in M2 generation of Kharif sorghum

Sorghum is cross pollinate diploid (2n = 2x = 20) and belongs to the family Poaceae. Sorghum is the important cereal grain after wheat maize rice and barley. An investigation was carried out on sorghum crop by using different doses of gamma rays and EMS concentration (10kR 20kR 30kR 40kR 10kR+0.2% EMS 20kR+0.2% EMS 30kR+0.2% EMS and 40kR+0.2% EMS) were used to irradiate seeds of PVK-801 genotype. Genetic variability was significant for yield and yield contributing characters among the M2 generation. Results indicated relatively higher mean performance in treatment 20kR+0.2%EMS dose for most of the characters. The GCV and PCV estimates showed wide variation for most of the characters in segregating M2 generation. High GCV PCV heritability and GAM were observed for grain yield per plant. The positive significant correlation was noticed for grain yield per plant with plant height grain per primary primary per panicle panicle length panicle width and days to maturity days to 50% flowering.