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STABILITY ANALYSIS FOR POD YIELD IN GROUNDNUT (ARACHIS HYPOGAEA L.)
Abstract
Ten promising genotypes of groundnut were evaluated for their adaptiveness and stability performance at eight different locations during 1997. The G x E interaction was highly significant. The regression coefficients (b) ranged from 0.76 to 1.17 and deviations from regression (S2d) ranged from 0.06 to 0.82. BM-28 and ICGV-86550 showed above average performance, unit slop and non significant deviation from regression and thus are suitable for wide range of environments. Four genotypes, Gori, ICG-7326, CINA and Chinese 68-4 possessed b < 1 and mean performance was also below average hence are suitable for poor environment. Out of all the tested genotypes, ICG-4993 had greater than unit regression coefficient (bi=1.14) and highest significant (S2d) (0.82) indicating its unsuitability for wider cultivation.
