Fifteen groundnut genotypes were evaluated for their stability under eight environments. The magnitude of genotype environment interaction was low under rainfed conditions compared to irrigated conditions. Significant positive genotypic correlations obtained in the locationwise and seasonwise analysis indicated that the genes acting under rainfed conditions are similar in the particular location or season. Negative correlation coefficients indicated that the set of genes that acted under one location in irrigated conditions were not similar to that acted under irrigated conditions at another location. To realise optimum yield potential in groundnut ideal genotypes are to be identified suited to different locations as well as to different seasons as the set of genes operating under those conditions appear to be similar.
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Tamil Nadu Agricultural University
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