بررسی اثرات قطع آبیاری در ژنوتیپ های گلرنگ ایرانی

In order to study irrigation intruption in 15 safflower genotypes of Iranian under two separate experimens were conducted in zahak Agirculture Research station of zabol,in cropping season in 2008-2009 yeras in a randomized complete block design with three replications. Frist experimental Was non stress (YP) ,(irrigation in rosset, polling ,flowering, and end flowering stages), second experiment was drought stress from timing 10 percent polling until harvest time. During growth stages data were recorded .Results showed that genotypes from aspect yield and yield components under non-stressd and stressed conditions had significantly difference. Mean grain yield sufflower genotypes was 3906 kg/ha under non-stressd, decreased to 2009 kg/ha pre terminal season dorught stress. Number of poll in plant from 23 poll in non stress condition to 19 poll in terminal season dorught stres decreased and also number seed in poll from 39 seed in non stress condition to 34 seed in terminal season dorught stress and grain1000 weight from 37/5g in non stress condition to 27/8 g in terminal season dorught stress decreased. Most seed yield belong to 6, 7 genotypes in non-stress but highest yield in stress conditions belong to 5,1,7,11 genotypes. Stress tolerance index(STI),geometric mean productivity (GMP), and mean productivity(MP) amounts was high for 1,5,7 genotypes in non-stressd and stressed conditions. Results showed positive and significant correlation between STI,GMP and MP indices and grain yield under non-stress and stressed conditions. On the based results these indices can be used to identify high yielding and tolerant genotypes under non-stressd and stressed conditions. KeyWords: Drought stress,,Stress indice, Genotyp and Sufflower

کلیدواژه ها:

گلرنگ ، ژنوتیپ ها ، آبیاری ، تنش خشکی ، عملکرد زراعی ، واکسن(ها)