Diallel Analysis in Wheat

Combining ability studies on seed yield per plant and its three components from an 8 × 8 half-diallel cross of wheat over two years indicated that both gca and sca variances were important for controlling the traits, Nonadditive gene effect was of greater importance in the genetic control of seed yield and number of productive tillers per plant, while preponderance of additive gene effect was noted for ear length and spikelets/spike, sea × year interaction exhibited greater importance as compared to gca × year interaction. UP 262 was a good general combiner for all the characters. The choice of cross for selection of desirable segregants in segregating generations has been suggested.