Genotype x environment interaction and yield stability of soybean (Glycine max l.) genotypes in multi-environment trials (METs) in Nigeria.

AMMI's stability value (ASV) was calculated to rank genotypes in terms of stability using the following equation [ 6 ]: (6) A M M I s t a b i l i t y v a l u e ( A S V ) = [ S S I P C A 1 ( I P C A 1 s c o r e ) S S I P C A 2 ] + [ I P C A 2 s c o r e ] 2 3 Results 3.1 Analyses of variance and performance of the genotypes Single-site ANOVA revealed highly significant (P < 0.01) differences among the 18 soybean genotypes for grain yield in each of the test locations, except in Mokwa and Sabuwa ( Table 4 ).

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