Green Global
Foundation   Journal
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GENOTYPE-ENVIRONMENT INTERACTIONS AND STABILITY PARAMETERS FOR GRAIN YIELD OF FABA BEAN (Vacia faba L.) GENOTYPES GROWN IN SOUTH EASTERN ETHIOPIA (Pages : 80 - 87)

Grain yield of 16 faba bean (Vacia faba L.) genotypes tested in a Randomized Complete Block Design (RCBD) with four replications across 12 environments during 2004-2006 growing season of South Eastern Ethiopia was analyzed using parametric stability measures. The objectives were to asses the genotype- environment interactions (GEI), determine stable genotypes, and compare mean yield with the parametric stability parameters. To quantify yield stability seven stability statistics were calculated (ASV, CVi, S2 xi, Wi 2 , ?i 2 , S2 di and bi). EH 94050-2 and EH 9200-ov 4-2-1 were more stable genotypes which has 7 out of 7 stability statistics used in the study. Moreover, the stability analysis identified genotype EH 94050-2 (genotype 7) and EH 9200-ov 4-2-1(genotype 12) as most stable genotypes and recommended for commercial production in the South East Ethiopia. Highly significant correlations were found among stability parameters implying their closer similarity and effectiveness in detecting stable genotypes and they are equivalent in measuring stability. Hence, any one of these stability parameters could be used to describe genotypes stability. Download