تجزیه همبستگی ژنوتیپ های مختلف گندم نان، تریتیکاله وگندم دوروم در پاسخ به تنش شوری

Wheat is the first staple crop in human being feeding, Salinity stress one of the most important abiotic stress which is known as a major problem for crop production specially wheat. In order to evaluate the effect of salinity on yield and yield components of different varieties of bread wheat in compare with genotypes of triticale and durum wheat in salinity stress an experiment was conducted in tow different normal and salt environments(EC=4 and 11 ds m-1)respectively on growing season2010 in Sirjan . A separate research was done based on RCBD in each location; varsities include 10 genotypes bread wheat, durum wheat as well as triticale. significant different were observed in aspect measured traits among genotypes in two sites, Results of correlation analysis in two sites showed there is positive correlation among grain yield and measured traits except number of seed and 1000_essd weight in normal site, whereas, there is positive correlation only among grain yield and number of spike, number of tiller, biomass and 1000_seed weight in saline site. According to multiple stepwise regression analysis showed biomass was have most effective factor in normal condition for explanation grain yield ,whereas, in saline site 1000_seed weight had the most effective role on grain yield variation. The trait which has been mentioned with the highest correlation with yield on stepwise regression recognized as effective traits on grain yield. Results of path analysis in normal site showed biomass had most direct effect on grain yield ,whereas, in saline site 1000_seea weight had most direct effect. Then in order to set up a breeding program for wheat breeding for salt affected are the mentioned traits can be useful for indirect selection.