بررسي اثر تنش كم آبي و محلول پاشي سلنيوم بر عملكرد و اجزاي عملكرد ارقام پاييزه كلزا (. Brassica napus L) در شهر ري

Study of drought stress and Selenium spraying on seed yield and yield components of winter rapeseed (Brassica napus L.) cultivars in Shahr-e-Rey

In the other to Study of drought stress and Selenium spraying on seed yield and yield components of winter rapeseed {Brassica napus L.) cultivars in Shahr-e-Rey region, An experiment carried out in Split factorial design in the basis of randomized complete blocks with 4 replications in 2006, that Irrigation in two levels : Normal irrigation and irrigation with drought stress when the soil electrical conductivity and Opera and selenium spraying at the beginning of flowering in 3 levels: 0,16 and 21 mg/ha as sub factor. The results showed that the simple effect of irrigation , selenium and cultivars on seed yield and yield components had significant difference at 1% level. In this case Okapi with 3197 Kg/ha and Opera with 2497 Kg/ha produced maximum and minimum amount of seed yield in stress and non stress condition. Interaction effect of irrigation and cultivars On seed yield and its components had significant difference at %1 level. Normal irrigation in Okapi with 3869 Kg/ha and drought stress in opera with 2176 Kg/ha conducted to maximum and minimum seed yield amount and Zarfam with 2780 showed highest seed yield in stress condition. Interaction effect of irrigation, cultivar and selenium on seed yield had significant difference at %5 level and indicated that normal irrigation and 21 gr/ha selenium spraying in Okapi with 4083 Kg/ha gained to maximum seed yield amount.