African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12404

Article in Press

Multi-environmental Evaluation of Large Red Mottled bean (Phaseolus vulgaris L.) genotypes in West and Kelem Wollega Zones of Western Oromia

Dereje Abera*, Biru Alemu, Tashome Gutu

  •  Received: 10 August 2019
  •  Accepted: 09 May 2022
Common bean is a tropical diploid (2n = 22), self-pollinating crop, and a member of the fabaceae family which is most important food legume rich in cheap and easily affordable protein, minerals, vitamins, and essential amino acids. Large Red mottled common bean genotypes were one of the known categories of common bean genotypes with increasing market and home consumption demand in west Oromia. Multi-environmental evaluation of large red mottled common bean genotypes was done on twelve genotypes at Haro Sabu Agricultural Research Center main station and Tole FTC, Sago FTC, Kure gayib FTC and Shebel FTC during 2015-2017 main cropping season. The specific objective (s) of the study was to evaluate and select high yielding, stable large red mottled Common bean genotypes for further varietal release for West and Kellem Wollega Zones of West Oromi, Ethiopia. Field experiment was conducted on 12 Common bean genotypes by using randomized completed block design (RCBD) with three replications, having a net plot size of 1.6mx3m. Combined ANOVA revealed significant variation of genotypes, environment and their interaction. Combined analysis of variance showed significant difference among genotypes for plant height, number of pods per plant, hundred seed weight and grain yield. Environment had significant variation on all agronomic traits considered, whereas the interaction effect of genotype by environment imposed significant effect on days to flowering, days to maturity, plant height, number of branch/plant, seed/pod, hundred seed weight and grain yield. Additive main effects and multiplicative interaction (AMMI) model was used to assess the effect of genotype by environment interaction, analyze the ability of common bean genotype(s) to become well suited to an environment rather than modifying the environment (adaptability) and genotype's capability of performing more or less similar across several environments (stability). Thus, Stability of genotypes were further tested and confirmed by AMMI stability value and Genotype Selection Index, and GGE biplot. From the total source variation;11.03% (genotype), 52.86% (environment) and 13.17% (GXE), 2.68% (Block) and 20.26% (Error) were estimated. The higher mean value of grain yield which was 1.441 ton/ha (G4) was obtained with a yield advantage of 2.64% compared with the best standard check Morka (1.404 ton/ha). ASV, GSI and GGE Biplot confirmed that G4 was high yielder, more adapted and relatively stable Common bean genotype. Thus, the identified genotype G4 was suggested for further releasing for potential areas of West and Kelem Wollega Zones, West Oromia, Ethiopia and other areas with similar agro-ecology. Keywords: Large red mottled bean, Stability, ASV, GSI, Yield

Keywords: Large red mottled bean, Stability, ASV, GSI, Yield