صفات تاثیرگذار بر عملکرد دانه لاینهای اینبرد نوترکیب گندم نان در شرایط مختلف آبیاری

To determine the effective traits on grain yield of wheat and estimation of direct and indirect effects of the
traits on grain yield, an experiment was conducted using split plot design based on completely randomized
blocks design with three replications during 1391. The main and sub-factor consisted of two irrigation levels
38 recombination inbred lines along with their parents (Zagros and Norestar) respectively. Analysis of
variance revealed significant difference between irrigated levels for all the studied traits except spike length.
For all the studied traits, the difference of the genotypes were significant. While, line × irrigation interaction
was not significant for non of the traits. Grain yield was positively correlated with all the traits except
peduncle length. Based on path analysis number of grain per spike, number of spike per m2 and 1000 grain
yield showed the highest direct effects on grain yield, respectively. The most indirect effects on grain yield
were observed for spike length through number of grain per spike and number of spike per m2.