Vol. 10, Issue 6 (2021)

Author(s):
N Ratnakumari, L Naram Naidu, RVSK Reddy, TSKK Kiran Patro, D Ratna Babu and K Umakrishna

Abstract:
The present investigation was taken up at College of Horticulture, Venkataramannagudem, Andhra Pradesh, India during 2018-2019, to study the combining ability of seven different lines of yardlong bean. They were mated diallel fashion excluding reciprocals and their twenty one crosses were evaluated along with seven parents and one commercial check in Randomized block design (RBD) for fruit yield and quality attributing traits. The analysis of variance for combining ability revealed significant differences due to parents and crosses for all the characters except for days to first picking whereas the significant differences due to parents vs hybrids were observed for fourteen of the seventeen characters studied indicating the existence of wide variability in the material studied and greater scope for identifying promising parents and hybrid combinations. The lines Babli, Bobbili Local, Lola and Trivendrum Local recorded significant positive gca effects were found to be promising general combiners for yield and quality traits. In respect of sca effects, six crosses viz., Babli x Bobbli Local, Babli x Lola, Babli x Trivendrum Local, Bobbili Local x Lola, Bobbili Local x Trivendrum Local and Lola x Trivendrum Local were identified as promising specific combiners for yield and quality traits in yardlong bean. The knowledge of combining ability helps in identifying good combiners for hybridization.