In:
PLOS ONE, Public Library of Science (PLoS), Vol. 17, No. 10 ( 2022-10-5), p. e0252362-
Abstract:
Cowpea [ Vigna unguiculata (L.) Walp.] is a crop with significant agronomic and nutritional value. In Togo, the crop is very appreciated by local people. It is the third food habit in Togo after maize and rice. However, several accessions of cowpea cultivated in Togo are now prone to extinction, creating a risk of genetic erosion. It is therefore urgent to assess the genetic diversity of accessions in order to set up a good conservation program. To achieve this, genetic diversity and phylogenetic relationships among 70 accessions of cowpea collected in the five (5) administrative regions of Togo were assessed using Simple Sequence Repeat (SSR) molecular markers. The twenty-eight SSR primers used in this study generated a total of 164 alleles with an average of 5.82 alleles per locus. Polymorphic Information Content (PIC) values ranged from 0.20 to 0.89 with an average value of 0.58. Population structure analysis using model-based revealed that the cowpea germplasm was grouped into two subpopulations. The analysis of molecular variance (AMOVA) revealed that 98% of genetic variation existed among accessions within regions. The fixation index (Fst) value, which was 0.069 was low, indicating relatively low population differentiation. The phylogenetic analysis grouped the 70 accessions into two main groups that can be further divided into four groups independent of their origins. This study provides a foundation for a Togolese cowpea germplasm conservation program and can serve for the selection of parental material for further studies aimed at the genetic improvement of local germplasm.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0252362
DOI:
10.1371/journal.pone.0252362.g001
DOI:
10.1371/journal.pone.0252362.g002
DOI:
10.1371/journal.pone.0252362.g003
DOI:
10.1371/journal.pone.0252362.g004
DOI:
10.1371/journal.pone.0252362.t001
DOI:
10.1371/journal.pone.0252362.t002
DOI:
10.1371/journal.pone.0252362.t003
DOI:
10.1371/journal.pone.0252362.t004
DOI:
10.1371/journal.pone.0252362.t005
DOI:
10.1371/journal.pone.0252362.t006
DOI:
10.1371/journal.pone.0252362.t007
DOI:
10.1371/journal.pone.0252362.t008
DOI:
10.1371/journal.pone.0252362.s001
DOI:
10.1371/journal.pone.0252362.s002
DOI:
10.1371/journal.pone.0252362.s003
DOI:
10.1371/journal.pone.0252362.s004
DOI:
10.1371/journal.pone.0252362.s005
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2022
detail.hit.zdb_id:
2267670-3
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