Genetic Control on Yield and its Attributing Traits in Rice withn Combining Abilities of the Parent for the Traits

Eleven genotypes of rice were evaluated for different yield and its attributing characters. Out of these eight parents were chosen as female and three parents were considered as male. These lines and tester were combined following Line × Tester crossing design to estimate combining abilities (gca effect) of Parentts and crosses (sca effect). Line × Tester analysis confirmed the influence of sca variance on most of the yield related characters which predicted that some characters were predominantly controlled by dominance gene actions with substantial amount of epistatic gene interactions. Some genotypes were found to be high general combiners for yield plant-1 with number of yield related characters like number of grains plant-1 and number of grains panicle-1.