Abstract: By Using of 10 F₁ hybrids derived from the diallel cross of 5 K,V-cytoplasmic A-lined and each of 2R-lines as well as their parents,the heterosis of K, V-cytoplasmic hybrid wheat was studied under high yield condition.The results showed that hybrid with K, V-cytoplasm had very high heterosis in the grain yield per plant,7 crosses yielded 7 11%-25 1% more than the average of both parents, where 3 crosses of them were 15 7%-25 1%,4 crosses increased 2 4%-18 1%.The heterosis mainly showed higher 1000-grain weight and then the grains per spike,and 3 crosses surpassed the average of both parents.Reduction of spikes per plant effected the yield of hybrid. The spikes of hybrid wheat could be increased by selecting the parents with more spikes.

Key words: K,V-cytoplasmic hybrid wheat, Heterosis, Combining ability

CLC Number: 

• S512.035