برآورد پارامترهای ژنتیکی و بررسی روابط بین صفات کمی هیبریدهای ذرت دانه ای تحت شرایط خشکی و نرمال با استفاده از تجزیه به مولفه ها

This study was conducted to Evaluation the relationship between quantitative traits in 50 new hybrid maize under normal and drought conditions in a randomized complete block design with three replications in the crop year 2014 in research center of Khorasan Razavi. The results of the analysis of variance showed significant differences for all traits in both normal and stress environments at the 1% level. Genetic characteristics, such as genotypic and phenotypic coefficient of variation and heritability were calculated. Range of general heritability was of 28% for yield to 87% for kernel rows per ear in normal conditions and from 30% for kernel depth to 87% for leaf surface in stress conditions and in private heritability of 0% for Plant height to 3.9% for ear height and Tassel length in normal conditions and of 0% for kernel depth and seed weight to 4.4% for leaf area in drought conditions. To determine the characteristics of each principal component analysis was performed. The results of this analysis showed that, under both normal irrigation and drought stress conditions, seven main components justified respectively 70.9% and 72.5% of the total variation.