اثر تراكم بوته بر عملكرد و اجزاء عملكرد ارقام سورگوم دانه اي در سيستان

Effect of Plant Density on Yield and Yield Components of Different Cultivatrs of Grain Sorghum in Sistan Region

A Field experiment was conducted to determine the effect of five plant densities (10, 15, 20, 25 and 30 plants m^-2) on yield and yield components of three sorghum cultivars (Local, Payman and Kimyia) in Sistan region in South East of Iran, using a split design based on randomized complete block design. The results showed that the plant density had a significant effect on number of seeds per panele, 1000 kw, grain yield and grain yield per plant. The highest grain yield (3830 kg ha^-1) was obtained from the density of 30 plants m-2. Grain yield per plant, number of seeds per panicle and 1000 kw were significantly decreased by increase in plant density. Local cultivar produced the highest number of panicles and number of seeds per panele than other cultivars. The interaction effects of treatments on measured traits were not significant. According to the obtained results, density of 30 plants m-2 are more appreperiate and recommendable for the region.