Combining ability studies for yield and yield components in Basmati rice

Five genetically diverse varieties viz., Sanwaal Basmati, Super Basmati, Pusa 2517-2-51-1, P1121-92-8-1-1-3-3 and PAU 2935-16-3-5-2 were crossed with three well adapted varieties, Ranbir Basmati, Pusa Basmati 1 and Basmati 370 in a line x tester design. The preponderance of dominant gene action was observed for plant height, effective tillers plant-1, panicle length, number of grain panicle-1, spikelet sterility, 1000-grain weight and grain yield plant-1. Pusa 2517-2-51-1, Sanwaal Basmati, Super Basmati, Ranbir Basmati and Basmati 370 were found to be good general combiners which can be taken up to generate desirable segregates for further selection. High sca effects were observed in the crosses, Super Basmati / Ranbir Basmati, Pusa 2517-2-51-1 / Pusa Basmati 1, P1121-92-8-1-1-3-3 / Ranbir Basmati and PAU 29-35-16-3-5-2 / Basmati 370. The crosses Pusa 2517-2-51-1 / Pusa Basmati 1, P1121-91-8-1-1-3-3 / Ranbir Basmati and PAU 2935-16-3-5-2 / Basmati 370 found to be the best for grain yield and its components which can be used for exploitation of heterosis for yield.