PJB-1999-56
MUTAGENESIS FOR REDUCED PLANT HEIGHT AND HIGH GRAIN YIELD IN JAJAI 77, AN AROMATIC RICE (ORYZA SATIVA L.) VARIETY
A.W. BALOCH, A.M. SOOMRO, G. MUSTAFA, M.S. BUGIDO AND H.R. BUGIDO
Abstract
Ionizing radiation was successfully utilized to develop the mutant variety Jajai 77-30 with reduced plant height and high grain yield from a commercially grown aromatic variety Jajai 77. About 22 % reduction in plant height was recorded in the mutant variety Jajai 77-30 compared with its parent variety. The data of zonal and national trials indicated that the mutant variety Jajai 77-30 had significantly higher (P< 0.05) grain yield than the commercial varieties viz., Jajai 77, Basmati 370 and Basmati 385. The mutant variety Jajai 77-30 yielded 3781 kg/ha during 1990 and 4232 kglha during 1991 in the National Uniform Rice Yield Trials, securing second and first positions, respectively. This mutant has been named as "KHUSHBOO 95" and also released as a rice variety in 1996 for general cultivation in the province of Sindh.
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