Genetic architecture and frequency distribution of yield and nutritional traits in ADT56 x Kalanamak derived F2 population of Rice (Oryza sativa L.)

In the present study, frequency distribution and descriptive statistical parameters were analysed for seventeen yield and grain nutritional traits in ADT56 X Kalanamak of F2 population of rice. Significant variability was observed across all traits. The total grains per panicle (3214.50), filled grains (2235.30) and plant height (320.10) exhibiting the highest variance. Skewness values ranged from -1.26 to 1.21 indicating involvement of both additive and non-additive gene actions. Kurtosis values suggested that most traits followed a platykurtic distribution, reflecting polygenic inheritance. Traits such as single plant yield and grain zinc content showed positive skewness suggesting the potential for selection in advanced generation. The results demonstrate that the F2 population provides a valuable resource for identifying superior recombinants and designing effiecient breeding strategies.