For studying the stand effect on morphological and physiological properties of sample sunflower varieties, factorial testing project was applied as complete random blocks. It was replicated four times. There were 3 levels for sunflower varieties: Alastar(V1), Master(V2), Progress (V3). They were obtained from research Institution of seed improvement and seedle preparation of Karaj oil seeds research section. Density in 3 levels include: 66600, 83333, 111000 bush per hectare (density level were: D1:6.6 bushes per sq.m., D2: 8.3 per sq.m., D3: 11 .1 per sq.m.). The project was implemented on investigative field of the Islamic Azad University of Kermanshah, located at 20 km. to Kermanshah province, at Bisetoon city. The results implied that the effects of varieties were density on stem diameter, leaf area index, bush height, weight of 1000 seeds, head diameter, seed yield, oil yield biomass and significant harvest index. Also the effect of variety x density on head diameter was recognized meaningful biomass.
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