introduction of rice cultivar, kohrang

line no. 4 was selected from local champ a rice of lord egan, based on pure line selection method, during 1992 to 1995. the mean yield of this line was 6342 and 6829 kgha-l in two regions of lord egan in 1996 to 1997. the yield of this line was 700-1500 kgha-l more than that of lord egan local rice. line 4 is more early maturing than the local rice with better marketability and quality. amylase content of the grain is 21.4 24.6% and its white rice length is 6.1-6.3 mm. the grain are aweless, the color of pale a is brown furrow on straw, panicle execution from pod of flay leaf is well, the plant height is 115-120 cm, and the growth period (days from planting to harvest) is 135-140 days. the panicle length is 21-24 cm, the seed number per panicle is 90-120 but its percentage of unfilled grains is less than local rice. line 4 was introduced in iran as kohrang cultivar in 1999.