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Updated: Oct 7, 2025

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Published on: July 1, 2020
Path-coefficient and correlation analysis in Bambara groundnut (Vigna subterranea [L.] Verdc.) accessions over
Md Mahmudul Hasan Khan1,2, Mohd Y Rafii3,4, Shairul Izan Ramlee5
1Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia (UPM), UPM Serdang, 43400, Selangor, Malaysia. mhasan.bari12@gmail.com.
This study identified key traits for improving Bambara groundnut (Vigna subterranea) yield. Dry pod weight, hundred seed weight, and fresh pod weight are crucial selection criteria for breeding programs.
Area of Science:
- Agricultural Science
- Plant Breeding
- Genetics
Background:
- Understanding genotypic and phenotypic relationships is vital for crop improvement.
- Path coefficient analysis helps elucidate direct and indirect trait effects on yield.
Purpose of the Study:
- To estimate correlation coefficients between yield and related traits in Bambara groundnut.
- To determine the direct and indirect influences of yield components on seed yield per plant.
Main Methods:
- Studied 30 Vigna subterranea genotypes across four environments.
- Employed path coefficient analysis to assess trait correlations and effects.
- Utilized a randomized complete block design with three replicates.
Main Results:
- Significant genotypic differences were observed for all traits studied.
- Dry seed weight, hundred seed weight, and fresh pod weight showed strong positive phenotypic correlations with yield.
- Dry pod weight exhibited a high positive direct effect on yield, while fresh pod weight had the greatest indirect effect.
Conclusions:
- Dry pod weight, hundred seed weight, number of total pods, and fresh pod weight are effective selection criteria for enhancing Bambara groundnut seed yield.
- These traits can guide breeding programs for improved crop varieties.
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