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Asian Journal of Crop Science
  Year: 2017 | Volume: 9 | Issue: 4 | Page No.: 133-140
DOI: 10.3923/ajcs.2017.133.140
 
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Genetic Variability, Heritability and Genetic Advance of Some Haricot Bean (Phaseolus vulgaris L.) Varieties at Bench-Maji Zone, Southwest Ethiopia

Wondwosen Wondimu and Abebe Bogale

Abstract:
Background and Objective: Assessing variability is fundamental to identify the most important traits in haricot bean improvement program. The objective of the present study was to estimate variability, heritability and genetic advance based on twelve morphological characters of haricot bean (Phaseolus vulgaris L.). Methodology: The experiment was conducted in 2015 and 2016 in main cropping season at 2 locations of Bench-Maji Zone by using randomized complete block design with 3 replications. The data were subjected to one way analysis of variance using SAS. Results: The results revealed significant differences (p<0.05) among genotypes for most characters at both locations. The maximum value between phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) was recorded for number of primary branches (12.6-4.9%) at South bench and plant height (11.6-6.8%) at Menit Shasha. High PCV was recorded for grain yield at both locations and hundred seed weight at South Bench and stand count and number of pod/plant at Menit Shasha. The GCV of high order was observed only for grain yield (20.6%) at South Bench. While, high order of GCV was observed for stand count (20.1%) and number of pod/plant (23.06%) at Menit Shasha. High heritability values were observed on most characters considered at both locations. High heritability coupled high genetic advance (as percentage of the mean) was observed for number of pods/plant, hundred seed weight and grain yield at both locations. Similarly biomass and harvest index at South Bench and primary brunch, stand count at harvest and number of seeds/pod at Menit Shasha were recorded. Conclusion: Therefore, any improvement of these characters would result in a substantial increment on grain yield. Evaluation for variability of haricot bean using conventional approach still could provide vital information but using contemporary molecular genetic analysis approaches such as mapping of quantitative trait loci using molecular markers is helpful to understand variability at molecular level, improve selection knowledge and arrive at more comprehensive conclusions.
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How to cite this article:

Wondwosen Wondimu and Abebe Bogale, 2017. Genetic Variability, Heritability and Genetic Advance of Some Haricot Bean (Phaseolus vulgaris L.) Varieties at Bench-Maji Zone, Southwest Ethiopia. Asian Journal of Crop Science, 9: 133-140.

DOI: 10.3923/ajcs.2017.133.140

URL: https://scialert.net/abstract/?doi=ajcs.2017.133.140

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