Analysis of partial diallel cross for yield and it's components in durum wheat
2011
Ali, I.H. | Al-Falahy, M.A.H.
Eight parents of durum wheat were crossed using partial diallel cross method in the 2008/2009 growing season. The eight parents and their 12 F1 progenies were grown in the 2009/2010 at the Farm of the College of Agriculture, Duhok University, Iraq using a Randomized Complete Block Design with three replications to estimate the general combining ability of the parents, gene action, heritability and heterosis for yield and its components. The results showed highly significant differences among genotypes for all the studied characters. The parent I.D 357 E had a positive general combining ability effect in most characters including grain yield. The dominance was greater than additive genetic variance in most the characters. Heritability in narrow sense was high for days to 75% flowering, 1000-kernel weight and grain yield/plant besides expected genetic advance was high for all characters. Maximum number of hybrids showed significant positive heterosis for 1000-kernel weight and grain yield/plant and the hybrid [Dour 29x LD 357 E) had the highest positive heterosis for most studied characters including grain yield.
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