بررسی پارامترهای ژنتیکی و وراثت پذیری صفات مورفوفیزیولوژیک، عملکرد و اجزاء عملکرد هیبریدهای ذرت دانه ای در شرایط تنش خشکی .

Abstract
This experiment was conducted to study the effects of water deficit stress on morphological traits,
yield and yield components of 60 maize single cross hybrids which was laid out in randomized
complete block design (under normal and drought stress conditions), with three replications at
Torough Agricultural and Natural Resources Research center located in Mashhad. The result of
ANOVA showed significant differences among single cross hybrids for all of measured traits in
both conditions. In non-stress or normal condition, hybrids No.4 and in stress condition, hybrids
No.9 were the best hybrids for grain yield with 13.30 and 9.02 ton/ha, respectively. Stress condition
has positive effects on the trait of the corn cob percent and negative effect on other traits that
indicated the stress condition has more cob percent than normal condition. The highest percentage
reductions of yield stress than normal were observed. Heritability of yield under water stress
increased 24 percent.