YANDA FOCUS EDSON
Greener Journal of Agricultural Sciences | Greener Journals | 2022
Paper ID: RQL-PAPER-2026-000010 | DOI: 10.15580/gjas.2022.2.050122043 | Views: 7
Publication Date: 2022-05-24 | Volume: 12 | Issue: 2 | Pages: 168-184
Type: Journal article | Discipline: Agriculture | Subject Area: - | Language: English
DOI: 10.15580/gjas.2022.2.050122043
A total of 84 common bean (Phaseolus vulgaris L.) accessions were collected from different areas of Tanzania serving as source of germplasm. Nineteen agro-morphological traits of 84 common bean accessions were assessed to analyze the variability as a core objective for this study. Among all the accessions, 40.48% were characterized by indeterminate bush with moderate climbing ability and pods distributed evenly up to the plant habitus followed by 36.9%. Similarly, 14.29% were the genotypes with indeterminate bush with semi-climbing main stem and branches habitus genotypes. Also, 14.29% were the genotypes with the indeterminate bush with prostrate, and 7.14% were the genotypes with indeterminate bush with erect branches habitus while 1.19% were the genotypes with determinate bush least. Phonological, quantitative and qualitative traits were evaluated and their scores were subjected to principal component analysis and cluster analysis. The phylogenetic tree demonstrated 2 major clusters which were further divided into sub-clusters. Principal component analysis accounted for the accumulative variance of 35.78% revealing morphological variation highly attributed with variables which had greater than 0.2 Eigen values. The study demonstrated low morphological variation among the genotypes and emphasized the need to broaden genetic variability of the common bean in Tanzania. The results of this study can be used to select the valuable breeding material for use. Besides, molecular markers can be deployed to assess further the variability and diversity of these genotypes.
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