Combining ability analysis in rice (Oryza sativa L.)
R. P. Thakor1 and P. M. Mistry2*
1 Department of Genetics and Plant Breeding, N. M. College of Agriculture,
2 Main Rice Research Centre (MRRC), Navsari Agricultural University, Navsari -396 450, Gujarat, India.
*Corresponding author (email: drpmmistry2510@yahoo.co.in)
Received: 20th April 2018, Accepted: 30th Sept. 2018
Abstract
Combining ability in rice was carried out by using ten parents, their forty five hybrids. The magnitudes of mean sum of square due to sca were greater than the gca for most of the traits indicating the predominance of non-additive type of gene action. The estimates of gca effects of parents indicated that there were four parents NAUR-1, GNR-3, NVSR303-6 and GAR-13 to be good general combiners for grain yield and some of yield contributing characters. The best specific crosses for grain yield per plant involved the combinations of either poor x poor, good x poor and poor x good effects.