Department of Plant Breeding, Genetics & Biotechnology, Punjab Agricultural University, Ludhiana 141 004.
Present address:1 National Research Center on Plant Biotechnology, IARI, New Delhi 110 012.
To improve yield potential of export quality traditional Basmati rice (Oryza sativa L.) variety Basmati 370, QTL for yield components were introgressed from a high yielding tropical Japanica cultivar Palawan through marker assisted selection in BC2F2 population. Transgressive segregants were observed for all traits. Enhancement over recurrent parent for panicle weight (155.5%), panicle number (141.5%), grains per panicle (35.7%), 100-grain weight (35%), panicle length (20%) and for overall grain yield was 168.7%. A set of 201 SSR markers was used to identify and tag a total of 19 putative QTL by bulked segregant analysis. Six putative QTL for panicle number were tagged on chromosome 1, 2, 7, 8, and 12, five for panicle weight on chromosome 1, 5, 7, 9 and 12, three QTL for 100 grain weight 1, 6 and 7 and five QTL for grain yield per plant on chromosome 1, 2, 7, 8 and 12 were detected. The QTL identified in this study will be useful in molecular breeding of Basmati for improvement of yield.
Rice, Basmati 370, AB-QTL analysis, SSR markers, yield components
