Genotype and environment interaction and stability analysis for yield and its contributing traits in rice
Forty cross combinations obtained through crossing of four female lines with ten testers in line x tester mating fashion were evaluated to study stability and genotype x environment interactions for yield and yield contributing characters in rice over three different locations in Gujarat state of India during wet season 2011. The coincidence of genotypic performance with environmental values was observed for all the ten characters studied, evident from significant G x E (linear) mean square when tested against pooled deviation. This suggested that the performance of genotypes over environments could be predicted reasonably for these traits. In the present study, it is concluded that IR-28, NVSR-176 and NAUR-1 were stable over three locations for yield and its component traits. Most high yielding potential stable hybrids were NVSR-178 x NAUR-1, NVSR-178 x IET-21682, NVSR-176 x IR81025-B-116-1, NVSR-176 x IR80501-B-96-1-B and NVSR-176 x IET-21682 as they fulfiled the all the criteria of stability.
Author : DA Shindeand PB Patel
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