The effect of genotype X location interraction on seed yield of soyabean (Glycine max (L) Merril)

Abstract

The results of eleven genotypes of soybean (Glycine max (L) merril) were used to estimate variance components for yield. G, L and GXL interactions had significant (P<0.05) effect on yield, indicating differential varietal response to the environment. Genotype grouping technique were used to classify the genotype and most of the genotype was classified as unstable, as the genotypes exhibited a wide range of yielding abilities indicating a considerable amount of genetic dissimilarity. Only genotypes TGX 1448 – 2E and TGX 1489 – 1D were desirable as they combined above average yield with below average CV, while TGX 1660 – 1660 – 19F and TGX 1455-2E which combined above average CV with below average yields were least desirable.

Keywords: G = Genotype, L = Location, GXL = Genotype by Location, I = Interaction

Journal of Agriculture, Forestry and the Social Sciences Vol 3(1) 2005: 140-145