بررسی تأثیر تنش خشکی بر عملکرد و اجزاء عملکرد گلرنگ بهاره

To investigate the effect of stress on yield and yield components of safflower split-plot experiment in
randomized complete block design with three replications in 1391 at the Agricultural Research Station Zarei
Sanandaj Islamic Azad University was conducted. The main factor of four irrigation levels: normal (a1),
irrigation at the rosette stage (a2), irrigation at flowering stage (a3) and irrigation at grain filling stage (a4),
respectively. Cultivars as subplots with four cultivars Sina, Faraman, Goldasht and the shark. Grain yield per
plant, number of capsules per plant, number of seeds per boll, Number of seeds per plant, plant height and
seed weight were measured. Based on the analysis results, levels of main factor ( irrigation ), Except for
plant height had a highly significant difference. Different cultivars were highly significant in all traits. Major
and minor non- factor interaction was significant for all traits. Mean comparison showed that at 5% salt
stress at flowering stage had the greatest effect on yield and yield components. But tension in the rosette
stage is not significantly different from normal irrigation, shark varieties and cultivars showed the greatest
resistance to drought Goldasht had the highest yield.