TY - JOUR 
A1 - Carvalho, Marcia
AU - Muñoz Amatriaín, María
AU - Castro, Isaura
AU - Lino Neto, Teresa
AU - Matos, Manuela
AU - Egea Gutiérrez-Cortines, Marcos
AU - Dos Santos Rosa, Eduardo Augusto
AU - Close, Timothy
AU - Carnide, Valdemar
T1 - Genetic diversity and structure of Iberian Peninsula cowpeas compared to world- wide cowpea accessions using high density SNP markers
Y1 - 2017
SN - 1471-2164
UR - http://hdl.handle.net/10317/6742
AB - Background: Cowpea (Vigna  unguiculata L. Walp) is an important legume crop due to its high protein content, adaptation to heat and drought and capacity to fix nitrogen. Europe has a deficit of cowpea production. Knowledge of genetic diversity among cowpea landraces is important for the preservation of local varieties and is the basis to obtain improved varieties. The aims of this study were to explore diversity and the genetic structure of a set of Iberian Peninsula cowpea accessions in comparison to a worldwide collection and to infer possible dispersion routes of cultivated cowpea. Results: The Illumina Cowpea iSelect Consortium Array containing 51,128 SNPs was used to genotype 96 cowpea accessions including 43 landraces and cultivars from the Iberian Peninsula, and 53 landraces collected worldwide. Four subpopulations were identified. Most Iberian Peninsula accessions clustered together with those from other southern European and northern African countries. Only one accession belonged to another subpopulation, while two accessions were ‘admixed ’ . A lower genetic diversity level was found in the Iberian Peninsula accessions compared to worldwide cowpeas. Conclusions: The genetic analyses performed in this study brought some insights into worldwide genetic diversity and structure and possible dispersion routes of cultivated cowpea. Also, it provided an in-depth analysis of genetic diversity in Iberian Peninsula cowpeas that will help guide crossing strategies in breeding programs.
KW - Genética
KW - Vigna  unguiculata
KW - Single nucleotide polymorphism
KW - Genetic diversity and variation
KW - Population structure
KW - 2417 Biología Vegetal (Botánica)
LA - eng
PB - BioMed Central
ER -