| Summary: | Two photosensitive and indeterminate varieties of horsegram viz., PAIYUR 2 and CRIDA 1-18 R were utilized for
mutagenic study. M2 populations of gamma ray (G) + EMS were statistically analyzed to determine the extent of variability
and scope of selection for the trait improvement. In this study, mutant population exhibited considerable variation for most
of the traits in comparison with respective controls. The negative shift in mean value was observed for most of the yield
components in mutant population of both varieties. Combination treatments viz., G+EMS: 200 Gy+0.3% and G+EMS: 300
Gy+0.3% were found suitable for the improvement of single plant yield in both varieties. Based on the estimates of skewness
and kurtosis, the nature of gene action was determined for the traits. Positively skewed distribution with leptokurtic curve
was noticed for single plant yield suggesting for adoption of intense selection in existing variability for maximizing the
genetic gain.
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