Combining ability studies for grain yield and its component characters in rice (Oryza sativa L.)

Abstract

The present study was done to understand the genetic architecture of rice lines and search for the possible scope of improvement. Seeds of 13 rice genotypes possessing different morphological and productive attributes were obtained from the Department of Plant Breeding and Genetics, College of Agriculture, Central Agricultural University, Imphal. The 13 genotypes i.e., 10 lines (popular in Manipur) namely, Sanaphou, KD-1-1-38-72, RCM-9, CAU-R-1, KD-6-7-1, Punshi, CAU-R-2, KD-2-6-3, RCM-5 and KD-2-7-6-2 and 3 testers (National) namely Satary, Neela and WR-2-3-2 were grown in 1999 to generate 30 F1 cross combinations using line x tester mating design.