Genetic appraisal of F2 generation of Dolichos bean for yield and yield attributing traits

Abstract

In the present study F2 generation was evaluated for yield and yield contributing traits to understand genetic variability and association among yield contributing traits in dolichos bean. High phenotypic and genotypic coefficient of variability (PCV and GCV) was observed for first flowering initiation and total seed weight per plant in both the crosses. The differences between PCV and GCV values were narrow for all the traits studied, which indicates the low level of environmental influence in the expression of these traits. High heritability and GAM was noticed for all the traits studied in both the crosses indicating that influence of additive gene effects in expression of these characters. Skewness and kurtosis indicate that seed weight per plant (SW/P) was governed by complementary gene interaction with fewer numbers of dominant genes. Hence, SW/P could be increased either by increasing 100SW or seeds per pod among the crosses studied.

Keywords

• dolichos
• variance
• heritability
• correlation
• yield
• skewness
• kurtosis