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- W2309777933 abstract "The genus Vigna (L.) Walp is a large cosmopolitan leguminous genus comprisingboth cultivated and wild species. Vigna unguiculata (L.) Walp. (Cowpea) is animportant food legume that is widely cultivated in the tropics, but its production andstorage are hampered by insect pests. The present study evaluated the intra-andinter-specific morphological variabilities among 20 accessions of six Vigna species,comprising wild and cultivated species. The species are Vigna unguiculata (L.)Walp, V. vexillata (A. Richard), V. oblongifolia (A. Richard), V. ambacensis(Baker), V. luteola (Jacq.) (Bentham) and V. racemosa (G. Don) (Hutch andDalziel). Thirty-one morphological characters involving qualitative and quantitativevegetative and reproductive traits were used for the evaluation. Multivariateanalysis such as Pearson Correlation Coefficient (PCC), Principal ComponentAnalysis (PCA) and Cluster Analysis (CA) were employed to evaluate the intra andinter specific variabilities. The paired-sample T test indicated significant differencesamong the 20 accessions (p#0.000, df = 19) in their morphometric traits. Therelative significant correlation observed among some traits such as pod length,number of locules per pod and number of seeds per pod indicated their closenessand potential for genetic improvement of cowpea. The PCA showed thatreproductive traits such as days to 50% flowering (0.984), days to 50% ripe pod(0.993), number of pods per peduncle (0.340) and 100-seed weight (0.132) are themajor traits that accounted for the variations among the species. The UPGMA usingthe average (between groups) segregated the 20 accessions into two main clusters,cluster I (comprising mainly wild Vigna species) and cluster II (comprising bothwild and cultivated species). The taxonomic affinities and genetic diversity amongthe species are of great importance in the utilization of the species for food andnutrition, fodder for ruminant animals, cover crop for rotational farming and moreimportantly genetic improvement of cowpea." @default.
- W2309777933 created "2016-06-24" @default.
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- W2309777933 date "2015-09-15" @default.
- W2309777933 modified "2023-10-12" @default.
- W2309777933 title "Morphometric Analysis of some Species in the Genus Vigna (L.) Walp: Implication for Utilization for Genetic Improvement" @default.
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- W2309777933 doi "https://doi.org/10.3923/jbs.2015.156.166" @default.
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