Combining ability for yield and its contributing characters in tomato

Abstract

The experiment was conducted with 45 F1s and F2s developed through diallel technique excluding reciprocals along with ten parents namely, Pant Bahar, Punjab Chhuhara, Pusa Ruby, Pusa Gaurav, Azad Type-2, Azad Type- 3, Kalyanpur Type-1, Angoorlata, KS-16 and KS-29 in randomized block design (RBD) with three replications. The study revealed that the significant general combining ability effects were shown by parents KS-29, Pant Bahar and Kalyanpur Type-1 and they were good general combiners for fruits yield in both the generations. Most of the crosses showed high sca effects for fruit yield in both the F1 and F2 generations. Crosses KS-16 x KS-29, Kalyanpur Type-1 x KS-29 and Pant Bahar x KS-16 were found to be the best specific combiners for fruit yield. In F1 and F2 generations, for fruit yield/plant (kg), the best specific combiners was KS-29 (6.30) followed by Angoorlata (4.29), Pant Bahar (3.79) and Kalyanpur Type-1 (2.37) and KS-29 (4.66) followed by Angoorlata (4.32), Pant Bahar (3.19), Kalyanpur Type-1 (2.35) and Pusa Ruby (2.26). Specific combining ability (sca) effects for fruit yield/plant of crosses in F1 generation were significant in 35 of the crosses with the range from 14.71 to 17.13.