تجزیه ژنتیکی برخی صفات مورفولوژی در گندم نان از طریق تجزیه میانگین نسل‌ها در شرایط تنش رطوبتی

In order to study heritability and gene action for some of the important quantitative characters in bread wheat, an investigation was conducted as randomized complete block layout with three replications using two parental line( Kavir and Roushan) and F1, F2 and 101 family of the F3 generations under stress drought condition. This experiment was undertaken in research field of college of Aburaihan in university of Tehran. Plant characters such as main spike weight, Spikes total weight, number of spikelets per spike, number of fertile tillers and length of flag leaf were measurement. The results of analysis of variance indicated a significant difference between generations for total characters. Therefore Generation mean analysis was performed for all characters. For characters evaluated, the model of three parameters [m], [d] and [h] indicated the best fit at the %1 level. The results also demonstrated that dominance variance had the most important role in controlling the inheritance of evaluated characters and average of the broad sense heritability for characters were between 74/25 to 68/73 ranged.