تجزيه همبستگي و عليت عملكرد دانه گندم با استفاده از نسل F2 تلاقي هاي داي آلل

Correlation and Path Analysis of Grain Yield of Wheat Using the F2 Generation ofDiallel Crosses

Half diallel crosses of nine Iranian wheat cultivars were used to estimate the correlation between grain yield and some agronomic traits. Parents with F2 generations were evaluated in a randomized complete block design with three replications. Plant grain yield and some agronomic traits including flag leaf length, flag leaf width, plant height, tiller number, grain number per main spike, main spike length, grain weight per main spike, peduncle length and peduncle weight were measured. Estimations revealed negative correlation between grain yield and other traits except for grain weight per main spike and peduncle length. The direct and indirect effects of traits were obtained by path analysis. The results of path analysis and stepwise regression indicated that grain weight per main spike, tiller number, plant height and peduncle weight explained the main part of the grain yield variation.