scholarly journals GGE-Biplot Analysis of Multi-Environment Yield Trials of Common Bean (Phaseolus vulgaris L.) in the southern Ethiopia

2019 ◽  
Vol 8 (1) ◽  
pp. 35
Author(s):  
Yayis Rezene
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Genotype By Environment Interaction ◽  
Breeding Strategy ◽  
Southern Region ◽  
Southern Ethiopia ◽  
Environment Interaction ◽  
Phaseolus Vulgaris L ◽  
Yield Data ◽  
Lattice Design

The present study was conducted on thirty-six common beans (Phaseolus vulgaris L.) Genotypes across six contrasting environments defined for its different soil fertility status and located at the southern Ethiopia. The genotypes were arranged in 6 x 6 triple lattice design and executed for two successive main cropping seasons with the objectives to evaluate yield performance of common bean genotypes and identification of mega environments. GGE (i.e., G = genotype and GE = genotype by environment, interaction) bi-plot methodology was used for graphical presentation of yield data after subjecting the genotypic means of each environment to GGE Bi-plot software. The first two principal components (AXIS 1 and AXIS2) were used to display a two-dimensional GGE bi-plot. Thus, genotypic AXIS1 scores >0 classified the high yielding genotypes while AXIS2 scores <0 identified low yielding genotypes. Unlike genotypic AXIS1, genotypic AXIS2, scores near zero showed stable genotypes whereas large AXIS2 scores classified the unstable ones. The environmental AXIS1 were related to crossover nature of GEI while AXIS2 scores were associated with non-cross over GEI. The six test environments in the southern region were divided in to two distinct mega environments (Mega-1 and 2). Mega-1 constituted GOHF13, ARMF12 and ARLF13 while genotype 14 (SCR10) being the best winner, on the other hand, Mega-2 contained GOHF12 and while common bean genotype 20(SCR17) being the best winner. The results of this study indicated that breeding for specific adaptation should be taken as a breeding strategy in southern region to exploit positive GEI to increase production and productivity of common bean.

Participatory approach in common bean (Phaseolus vulgaris L.) breeding for drought tolerance for southern Ethiopia

2011 ◽  
Vol 131 (1) ◽  
pp. 125-134 ◽  
Author(s):  
Asrat Asfaw ◽  
Conny J. M. Almekinders ◽  
Matthew W. Blair ◽  
Paul C. Struik
Keyword(s):  
Phaseolus Vulgaris ◽  
Drought Tolerance ◽  
Common Bean ◽  
Participatory Approach ◽  
Southern Ethiopia ◽  
Phaseolus Vulgaris L

Treatments of Common Bean Seeds ( Phaseolus Vulgaris L.) with Insecticides for Managing Ophiomyia Spp. (Tryon) (Diptera: Agromyzidae) Under Field Conditions in Southern Ethiopia

2021 ◽  
Author(s):  
Getachew Gudero Mengesha ◽  
Keyredin Sultan Salo ◽  
Dizgo Chencha Cheleko ◽  
Tamirat Samuel Shago ◽  
Merihum Gimja Betire
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Field Conditions ◽  
Southern Ethiopia ◽  
Phaseolus Vulgaris L

Stability and inheritance of storage-induced hardening in 20 common bean cultivars

1991 ◽  
Vol 71 (3) ◽  
pp. 641-647 ◽  
Author(s):  
T. E. Michaels ◽  
D. W. Stanley
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Coefficient Of Variation ◽  
High Standard ◽  
Phenotypic Variance ◽  
Environment Interaction ◽  
Phaseolus Vulgaris L ◽  
Mean Values ◽  
Coefficients Of Variation ◽  
The Stability

Storage of common bean (Phaseolus vulgaris L.) in elevated temperature and/or humidity conditions leads to a textural defect where the beans harden and fail to soften upon soaking and cooking. The objectives of this study were to determine the stability of 20 common bean cultivars grown in three environments for initial hardness, final hardness following storage and hardening ratio, and to estimate the heritability of these hardening parameters. Cultivar × environment interaction was highly significant for the hardening parameters. When stability was examined by plotting hardness against coefficient of variation across environments, three cultivars, GN-77135B, ICA Pijao and T39 Black Turtle, were marginally below the mean for both final hardness and coefficient of variation. While the coefficients of variation for the red kidney bean cultivars Redkloud and Montcalm were high, the maximum compression forces were only slightly (< 20%) greater than the maximum acceptable hardness level as determined by a sensory panel. Fiesta Pinto had the lowest coefficient of variation and near mean values for both final hardness and hardening ratio making it arguably the cultivar with best combination of texture and stability. Heritability estimates were low (0–0.24) with high standard error and estimates of the proportion of phenotypic variance due to G × E were moderate to high (0.29–0.69). Initial cultivar improvement efforts should focus on developing cultivars with greater stability across environments for the hardening parameters. Key words: Phaseolus vulgaris L., storage-induced hardening, stability, broad sense heritability, bean (common)

CULTIVAR BY ENVIRONMENT INTERACTIONS, YIELD STABILITY AND GROUPING OF TEST LOCATIONS FOR FIELD BEAN CULTIVAR TRIALS IN ONTARIO

1987 ◽  
Vol 67 (3) ◽  
pp. 653-659 ◽  
Author(s):  
S. J. PARK
Keyword(s):  
Phaseolus Vulgaris ◽  
Variance Components ◽  
Yield Stability ◽  
Regression Coefficients ◽  
Yield Potential ◽  
Field Bean ◽  
Environment Interaction ◽  
Phaseolus Vulgaris L ◽  
Yield Data ◽  
Bean Cultivar

Yield data of six recommended cultivars grown at seven locations (L) over 6 yr (Y) in the Ontario field bean (Phaseolus vulgaris L.) cultivar trials were analyzed to examine cultivar by environment interaction components, to determine yield stability of cultivars, and to group test locations. Cultivar (C), C × L, and C × L × Y effects were highly significant with large variance components indicating the importance of cultivar and test locations. The C × Y interaction was not significant. When yield stability was evaluated using cultivar means, regression coefficients (b), and deviations from linear regression (S2d), Ex Rico 23 was identified as being stable and potentially high yielding. Test locations were grouped into four homogeneous subareas by a biological classification method. Since breeding or recommending cultivars for four small subareas is not practical, efforts should be devoted to improving average stability and yield potential by testing at locations representative of homogeneous subareas.Key words: Bean (field), Phaseolus vulgaris, yield testing, genotype × environment interactions

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