Gene Action Analysis of Yield and Yield Related Traits in Spring Wheat (Triticum aestivum)

Present study was carried out to determine the mode of gene action in a 6 x 6 diallel cross involving six wheat varieties namely Sehar 06, Pb 96, GA 2002 Barani 83, Kohistan 97 and Chakwal 86. Analysis of variance showed highly significant differences among genotypes for all the traits studied. Data was collected for different morphological traits associated with yield. Additive type of gene action with partial dominance was observed for plant height, number of tillers per plant, spike length, number of spikelets per spike and grain yield per plant, while over-dominance was observed for peduncle length. Non-allelic interaction was absent for all the traits studied. © 2010 Friends Science Publishers