Genetic Diversity and Population Structure Analyses of Wild Relatives and Cultivated Cowpea (Vigna unguiculata (L.) Walp.) from Senegal Using Simple Sequence Repeat Markers

Publication Overview
TitleGenetic Diversity and Population Structure Analyses of Wild Relatives and Cultivated Cowpea (Vigna unguiculata (L.) Walp.) from Senegal Using Simple Sequence Repeat Markers
AuthorsSarr A, Bodian A, Gbedevi KM, Ndir KN, Ajewole OO, Gueye B, Foncéka D, Diop EA, Diop BM, Cissé N, Diouf D
TypeJournal Article
Journal NamePlant molecular biology reporter
Volume39
Issue1
Year2021
Page(s)112-124
CitationSarr A, Bodian A, Gbedevi KM, Ndir KN, Ajewole OO, Gueye B, Foncéka D, Diop EA, Diop BM, Cissé N, Diouf D. Genetic Diversity and Population Structure Analyses of Wild Relatives and Cultivated Cowpea (Vigna unguiculata (L.) Walp.) from Senegal Using Simple Sequence Repeat Markers. Plant molecular biology reporter. 2021; 39(1):112-124.

Abstract

Cowpea (Vigna unguiculata (L.)) is an important crop for food security in Senegal; therefore, understanding the genetic diversity of local germplasm is relevant for crop improvement and genetic maintenance in the era of climate change. For this purpose, 15 microsatellite markers were used to estimate the genetic diversity of Senegalese cowpea germplasm, including 671 accessions grown in eight regions and 66 wild relatives and intermediate forms (weedy). For the cultivated, the main expected heterozygosity (mHe) ranged between 0.317 (Fatick) and 0.439 (South). A narrow genetic variation between accessions from the different regions was observed with genetic similarity ranging from 0.861 to 0.965 and genetic differentiation indices (Fst) between 0.018 and 0.100. The accessions from southern Senegal (Kédougou, Sédhiou, and Kolda regions) are more diverse than the others. However, the accessions from the North (Saint-Louis) are genetically different from other regions. The diversity analysis in wild relatives from Senegal, which had never been performed before, revealed that the wild/weedy forms remain more diverse than the cultivated with genetic diversity values (He) of 0.389 and 0.480, respectively. STRUCTURE software divided the Senegalese germplasm into five subpopulations. Three of them (i, ii, and iii) included only cultivated accessions from several regions, one (v) mainly from Saint-Louis, and one (iv) the wild/weedy with some cultivated accessions. Our results support the hypothesis that Vigna unguiculata var. spontanea is the wild progenitor of cowpea. The accessions from the South, the northern recession accessions, and the wild/weedy could serve as sources of new genes for the genetic improvement of cowpea in Senegal.
Features
This publication contains information about 15 features:
Feature NameUniquenameType
UCAD20_MA113UCAD20_MA113genetic_marker
UCAD20_SSR6217UCAD20_SSR6217genetic_marker
UCAD20_SSR6241UCAD20_SSR6241genetic_marker
UCAD20_SSR6243UCAD20_SSR6243genetic_marker
UCAD20_SSR6289UCAD20_SSR6289genetic_marker
UCAD20_SSR6304UCAD20_SSR6304genetic_marker
UCAD20_SSR6311UCAD20_SSR6311genetic_marker
UCAD20_SSR6323UCAD20_SSR6323genetic_marker
UCAD20_SSR6418UCAD20_SSR6418genetic_marker
UCAD20_SSR6425UCAD20_SSR6425genetic_marker
UCAD20_SSR6671UCAD20_SSR6671genetic_marker
UCAD20_SSR6777UCAD20_SSR6777genetic_marker
UCAD20_SSR6800UCAD20_SSR6800genetic_marker
UCAD20_SSR6807UCAD20_SSR6807genetic_marker
UCAD20_SSR6819UCAD20_SSR6819genetic_marker
Properties
Additional details for this publication include:
Property NameValue
Publication TypeJournal Article
Publication Date2021
Language Abbreng
URLhttp://dx.doi.org/10.1007/s11105-020-01232-z
KeywordsVigna unguiculata, climate change, computer software, cowpeas, food security, genetic improvement, genetic similarity, genetic variation, germplasm, heterozygosity, microsatellite repeats, molecular biology, population structure
Cross References
This publication is also available in the following databases:
DatabaseAccession
AGL: USDA National Agricultural LibraryAGL:7070818