Molecular taxonomic relationships in the genus Vigna based on RFLP analysis

Fatokun, Christian; Danesh, D.; Young, Nevin D.; Stewart, Elwin L.

doi:10.1007/bf00223813

Cited by 109 publications

(55 citation statements)

References 16 publications

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“…The process of cultivar development from land races leads to the loss of allelic variability in cowpea (Fatokun et al, 1993). Allelic variants are lost or reduced when selection pressure is applied which may result in narrow genetic base.…”

Section: Resultsmentioning

confidence: 99%

Genetic interrelationship among cowpea varieties elucidatedthrough morphometric, RAPD and SSR analyses

Pradeepkumar

Mathew

Roch

et al. 2016

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The genetic interrelationship among all the popular vegetable cowpea varieties cultivated in Kerala was investigated through morphometric, RAPD and SSR analyses. High polymorphism was observed in RAPD (88.0 per cent of bands were polymorphic) and SSR (80.0 per cent of bands were polymorphic) analyses. Dendrogram based on morphological parameters has divided the genotypes into two main clusters which truncated at 68.0 per cent similarity, with purple and green poded varieties segregating into separate clusters. Morphometric analysis was successful to group the varieties with determinate and indeterminate growth habits whereas, RAPD and SSR markers could not make a clear division. However, distinction was apparent between purple poded and green poded types and purple poded varieties viz Vyjayanthi and Varun exhibited high similarity with each other in SSR analysis (80.0 per cent) when compared to RAPD (77.0 per cent). Dendrogram of pooled data of SSR and RAPD analyses has revealed maximum similarity between Vyjayanthi and Varun (77.0 per cent).

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Section: Resultsmentioning

confidence: 99%

Genetic interrelationship among cowpea varieties elucidatedthrough morphometric, RAPD and SSR analyses

Pradeepkumar

Mathew

Roch

et al. 2016

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“…Rich. of the subgenus Plectotropis were selected as outgroups based on their relationship with the ingroup described in the previous studies (Fatokun et al 1993, Goel et al 2002, Maréchal et al 1978, Yano et al 2004, Yasuda and Yamaguchi 1996. Wild, weedy and cultivated races were assigned in reference to the reports of Yamaguchi (1992) and Tomooka et al (2002b).…”

Section: Plant Materialsmentioning

confidence: 99%

Phylogenetic Relationship of Wild and Cultivated Vigna (Subgenus Ceratotropis, Fabaceae) from Myanmar Based on Sequence Variations in Non-coding Regions of trnT-F

Tun

Yamaguchi

2007

Breed. Sci.

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For clarifying the phylogenetic diversity of fifteen species of the subgenus Ceratotropis, including seven wild and three cultivated Vigna species collected from Myanmar, sequence variations in three trnT-F non-coding regions of the chloroplast genome were analyzed. The Myanmar materials were clustered into two well differentiated groups, the azuki bean group and the mung bean group. Six Myanmar species were clustered into the azuki bean group, and four species into the mung bean group. The azuki bean group consisted of three subclades: angularis-nepalensis subclade, minima subclade and riukiuensis-nakashimae-umbellatahirtella-exilis subclade. No clear lineage differentiation was found among the three races of V. angularis and V. nepalensis. An accession from Myanmar, which showed similar morphological features to those of wild azuki bean, shared a 51-bp deletion with V. angularis and V. nepalensis. Three V. minima accessions showed a distinct clade. V. riukiuensis showed a nested relationship with V. nakashimae sistered to V. hirtella, V. umbellata and V. exilis. The mung bean group consisted of five radiated subclades. In the mung bean group, V. trinervia from Myanmar was clustered with V. reflexo-pilosa, and wild mung bean accessions with their cultivated accessions. A high level of substitution, indel and microsatellite variations in the trnT-F sequences indicated that mung bean (V. radiata) and black gram (V. mungo) are phylogenetically well differentiated in the mung bean group. Myanmar is considered to be an area overlapping two major groups of the subgenus Ceratotropis.

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“…The species V. unguiculata commonly referred to as beans, black-eye bean, Kaffir pea, Southern pea, marble pea or cowpea and its wild relatives constitute the section Catiang (Padulosi, 1997;Andargie et al, 2013). The taxonomy of the genus Vigna is somehow controversial, due to the composition of species of different origin characterized by varied ecological and morphological diversity (Fatokun et al, 1993;Padulosi, 1997;Delgado-Salinas et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Morphometric Analysis of some Species in the Genus Vigna (L.) Walp: Implication for Utilization for Genetic Improvement

Popoola¹,

Aremu²,

Daramola³

et al. 2015

J. of Biological Sciences

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A B S T R A C TThe genus Vigna (L.) Walp is a large cosmopolitan leguminous genus comprising both cultivated and wild species. Vigna unguiculata (L.) Walp. (Cowpea) is an important food legume that is widely cultivated in the tropics, but its production and storage are hampered by insect pests. The present study evaluated the intra-and inter-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 and Dalziel). Thirty-one morphological characters involving qualitative and quantitative vegetative and reproductive traits were used for the evaluation. Multivariate analysis such as Pearson Correlation Coefficient (PCC), Principal Component Analysis (PCA) and Cluster Analysis (CA) were employed to evaluate the intra and inter specific variabilities. The paired-sample T test indicated significant differences among the 20 accessions (p#0.000, df = 19) in their morphometric traits. The relative significant correlation observed among some traits such as pod length, number of locules per pod and number of seeds per pod indicated their closeness and potential for genetic improvement of cowpea. The PCA showed that reproductive 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 the major traits that accounted for the variations among the species. The UPGMA using the average (between groups) segregated the 20 accessions into two main clusters, cluster I (comprising mainly wild Vigna species) and cluster II (comprising both wild and cultivated species). The taxonomic affinities and genetic diversity among the species are of great importance in the utilization of the species for food and nutrition, fodder for ruminant animals, cover crop for rotational farming and more importantly genetic improvement of cowpea.

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Molecular taxonomic relationships in the genus Vigna based on RFLP analysis

Cited by 109 publications

References 16 publications

Genetic interrelationship among cowpea varieties elucidatedthrough morphometric, RAPD and SSR analyses

Genetic interrelationship among cowpea varieties elucidatedthrough morphometric, RAPD and SSR analyses

Phylogenetic Relationship of Wild and Cultivated Vigna (Subgenus Ceratotropis, Fabaceae) from Myanmar Based on Sequence Variations in Non-coding Regions of trnT-F

Morphometric Analysis of some Species in the Genus Vigna (L.) Walp: Implication for Utilization for Genetic Improvement

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