The Survey of Morphophysiological Characteristics of Rapeseed Varieties Under Condition of Water Stress and Irrigation ( Brassica napus L .)

摘要

Rapeseed is an important oilseed crop in the agricultural ,to assess the resistance to drought stress of twovarieties of autumnal Rapeseed and study the their individual performance, a split plot experiment is carried outin 2005-06 harvest season to execute in Karaj, Iran. using two treatments and three replicates, in whichirrigation remained as the main factor in seven levels and the two secondary factors consisting of Zarfam &Opera varieties. The results reveled that the effect of variety on the seed yield, seed-oil yield, seed-oil percent(P>0.01) and 1000 seed weight (P>0.05) found significant (P>0.05). The complimentary effects of irrigation andvariety on attributes number of fructify in the secondary branches and the number of seed in fructify alsoshowed a significant (P>0.05) impact. Among the studied parameters, the correlation between the seed-oil yieldand seed-oil percent was found positive and significant (P>0.01) compared to the number of seed in fructify andthe maximum correlation was found between seed yield and oil yield (r = 0.99).