Effects of Water Deficit Stress on Several Quantitative and Qualitative Characteristics of Canola (Brassica napus L.) Cultivars

摘要: Water deficit stress considered as one of the most important limiting factors for oil seed canola ( Brassica napus L.) growth and productivity in Iran. To evaluate effects water on some qualitative quantitative characteristics cultivars, this experiment a greenhouse trial carried out factorial based completely randomized design with three replications Shahid Chamran University Ahwaz (Iran). Canola including ‘Hyola 308’, 401’ ‘RGS 003’ first factor, second was levels stress, at early stem elongation stage to flowering (D 1 ), emergence sacs 2 beginning 3 ) normal irrigation (C, check). Results showed that interaction between cultivars affected biological yield, yields harvest index p ≤0.01), dry matter economic yield ≤0.05). reduced grain yields. 308’ under had lowest (1.1 g plants -1 non-stress conditions highest (4.3 ). The decrease more than other stages. In addition, due yield. Stress susceptibility 0.914 1.12 respectively, which it can implies is sensitive stress.