AMMI Analysis for Grain Yield Stability in Faba Bean Genotypes Evaluated in the Highlands of Bale, Southeastern Ethiopia
Tadele Tadesse,
Amanuel Tekalign,
Gashaw Sefera,
Belay Asmare
Issue:
Volume 2, Issue 2, June 2021
Pages:
27-31
Received:
19 March 2021
Accepted:
19 May 2021
Published:
27 May 2021
DOI:
10.11648/j.rd.20210202.11
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Abstract: Genotype by environment interactions are studied to gain a better understanding of various phenomena. Among which yield stability can be highly determined by evaluating genotypes across different testing sites. This study was conducted to determine the effect of genotype × environment interaction (GEI) on grain yield, and to asses yield stability of faba bean genotypes. For this purpose, fourteen faba bean genotypes were evaluated using randomized complete block design with four replications at Sinana, Agarfa and Goba for three years (2017 to 2019) in the highlands of Bale, Southeastern Ethiopia. In this study it was revealed significant variation for the main effects, Genotypes, Environments and their interaction effect at P<0.01%.). Genotype's mean grain yield ranged from 2.14t/ha (EK05024-3) to 3.24t/ha (EK06007-2). The analysis of variance for AMMI also revealed significant variation for genotypes, environment and genotypes by environment interaction. Of the total sum of variation observed in grain yield environment, genotype and GEI contributed 86.15%, 5.67% and 8.15%, respectively. Using stability parameters ASV and Genotype Selection Index (GSI), genotype G1, G8, G12 and G14 showed general stability over the testing environments, whereas G3, G4, and G10 showed moderate stability since they have the second lowest GSI. But of all these genotypes, G10 gave the largest mean grain yield with a yield advantage of 21% compared to the checks used in this study. Therefore, G10, because of its yielding potential and moderate stability over the testing environments, it was selected as candidate genotype to be verified for possible release in the highlands of Bale, Southeastern Ethiopia and similar agro-ecologies.
Abstract: Genotype by environment interactions are studied to gain a better understanding of various phenomena. Among which yield stability can be highly determined by evaluating genotypes across different testing sites. This study was conducted to determine the effect of genotype × environment interaction (GEI) on grain yield, and to asses yield stability o...
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Determinants That Affecting the Production of Haricot Bean by Small Holder Farmers in Oromia Region of Ethiopia
Issue:
Volume 2, Issue 2, June 2021
Pages:
32-35
Received:
2 June 2021
Accepted:
8 July 2021
Published:
15 July 2021
DOI:
10.11648/j.rd.20210202.14
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Abstract: Haricot bean is an important pulse crop, which serves as consumption and basis for income, but its output and production are minima. So, this study aimed to analyze the factor affecting haricot bean producer smallholder farmers Oromia regional state of Ethiopia. The data for the analysis were obtained from the World Bank data published on their website in 2018. The result of the regression shows it is likely to rise production of haricot bean by increasing the source of seed, fertilizer or manure, education, total income, family size, and the land size these factors significantly affect production positively but the price is significantly influencing smallholder farmers production of haricot bean negatively. The program inferences of the results are to have to educate the smallholder farmers, encouraging using educated family, providing access haricot bean seed for smallholder producer farmers, setting minimum procurement price for inputs and providing input subsidies, ease delivery of inputs, encouraging and training ways allocating land for different haricot bean crop, diversified income sources should be created to increase the income of the farmers. The Government, Ministry of agriculture, the regional office of agriculture, Zonal agricultural office and woreda’s Agricultural office, Non-governmental Organization, Investigators, and academicians are needed additional encourage the production of improved haricot beans by designing based on farmer's problems and need.
Abstract: Haricot bean is an important pulse crop, which serves as consumption and basis for income, but its output and production are minima. So, this study aimed to analyze the factor affecting haricot bean producer smallholder farmers Oromia regional state of Ethiopia. The data for the analysis were obtained from the World Bank data published on their web...
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