Variation of Hull Over Grain Weight Percentage of Rice (Oryza Sativa L.) From Pakistan

Rice (Oryza sativa L.) is an important cash crop in the world. Rice is 2 nd most important food and cash crop of Pakistan after wheat. Forty accessions consisting of 20 conventional varieties and 20 New Plant Type (NPT) lines were used to determine percentage of hull over grain weight. The percentage of hull over grain weight was significantly different among varieties. The hull over grain weight percentage for varieties ranged from 10.5% to 30%. The percentage of hull /grain weight varied from 7.5% to 27.33 % for NPT lines and there was significant difference among NPT lines for this trait. This trait can be used in breeding program in order to increase rice production through increasing the milling efficiency by having thinner hull.