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Genetic Diversity and Population Structure of Cowpea (Vigna unguiculata (L.) Walp.) Landraces from Portugal and Mozambique
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Abstract: Cowpea (Vigna unguiculata (L.) Walp.) is currently a legume crop of minor importance in
Europe but a highly relevant staple crop in Africa and the second most cultivated legume in
Mozambique. In Portugal and Mozambique, cowpea’s phenotypic and genetic variation has been
maintained locally by farmers in some areas. We used the molecular markers SSR, SilicoDArT and
SNP to analyze the genetic diversity and population structure of 97 cowpea accessions, mainly
from Portugal (Southern Europe) and Mozambique (Southern Africa). As far as we know, this is
the first time that the genetic variation and the relationship between cowpea landraces collected in
Portugal with those originated in Mozambique is reported. Despite the shared historical past, the
Portuguese landraces did not share a common genetic background with those from Mozambique,
and two different gene pools were revealed. Knowledge of the genetic structure of cowpea landraces
offers an opportunity for individual selection within landraces adapted to particular
eco-physiological conditions and suggests the existence of a valuable gene pool for exploitation in
future Portugal-PALOP (Portuguese-speaking African countries) cowpea breeding programs.
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Guimarães JB, Nunes C, Pereira G, Gomes A, Nhantumbo N, Cabrita P, Matos J, Simões F, Veloso MM. Genetic Diversity and Population Structure of Cowpea (Vigna unguiculata (L.) Walp.) Landraces from Portugal and Mozambique. Plants (Basel). 2023 Feb 13;12(4):846. doi: 10.3390/plants12040846. PMID: 36840194; PMCID: PMC9963184.
Editora
MDPI