ارزیابی ارقام و لاین‌های منتخب از توده‌های بومی برنج استان اصفهان

In order to identify and introduce of new rice varieties to replace with Koohrang cultivar in major paddy areas of Chaharmahal and Bakhtiari Province, a study conducted in a randomized complete block design with five promising lines, two rice varieties of selected native populations and Koohrang variety with three replications during 2009 to 2011. Three-year results of combined analysis showed that evaluated genotypes were significantly different in agronomic traits, except number of ears per plant (p= 0.05). The effect of year was significant on days to phonological stages, number of grains per panicle, grain weight and grain yield. Based on the average of three years, two promising lines of codes 104 and 67-7, produced the highest paddy yield with no significance, with 7.737 and 7.651 t ha-1 respectively, and had different than other genotypes. Then two promising lines of codes 104 and 67-7 with no significant difference are recommended to Lordegan region and other same areas, because of the highest grain yield and their better quality.