Combining ability analysis for yield in hybrid rice

Sixty hybrids developed from crossing four CMS lines with 15 restorers were studied alongwith parents for 13 yield and yield attributing characters. Among the male parental lines, BR-827-35-3-1.RTN-3, IR-46 appeared the best general combiner for grain yield and most of the component characters. The female line IR-58025A was found to be good general combiner for all the traits except’ plant height and L:B ratio of grain. The most promising specific combinations were IR 58025A x XBR-827-35-3-1, IR-58025A x RTN-3 and IR-68885AxRTN-711 for grain yield hill-1.


Author : V. V. Dalvi and D.U. Patel