%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Pasquet, Rémy
%T Allozyme diversity of cultivated cowpea Vigna unguiculata (L.) Walp
%D 2000
%L fdi:010022315
%G ENG
%J Theoretical and Applied Genetics
%@ 0040-5752
%K LEGUMINEUSE ; CULTIVAR ; EVOLUTION DES SOLS SOUS CULTURE ; DIVERSITE GENETIQUE ; POLYMORPHISME GENETIQUE ; DOMESTICATION DES PLANTES ; METHODE D'ANALYSE ; ISOENZYME ; ELECTROPHORESE ; ETUDE EXPERIMENTALE
%K ALLOZYME
%N 1-2
%P 211-219
%R 10.1007/s001220051471
%U https://www.documentation.ird.fr/hor/fdi:010022315
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_55-56/010022315.pdf
%V 101
%W Horizon (IRD)
%X A survey of allozyme variation in cultivar-groups of cowpea (#Vigna unguiculata$ (L.) Walp.) was undertaken by examining 21 enzyme systems encoded by 36 loci in 271 accessions representing the five cultivar-groups. Very low levels of variation were found within accessions, which is typical of self-pollinating species. Little variation was also found among accessions. Compared with other legume crops, #V. unguiculata$ is depauperate in allozyme variation. We found an average of 1.61 alleles per locus with 42% of the loci polymorphic and a total heterozygosity of 0.061. Of the variation present, 90% was found within cultivar-groups, while 10% was among cultivar-groups. Data analyses revealed continuous variation among cultivar-groups and geographic regions with the accessions failing to segregate into discrete morphophysiological or geographic clusters. However, evolved cultivar-groups (cv.-gr. #Melanophthalmus$ and cv.-gr. #Sesquipedalis$) appear to be less diverse than their putative primitive cultivar-group progenitors. Due to lack of availability of critical material, no clear center of origin can be established. However, the data presented suggest that Northeast Africa could be a possible center of domestication. (Résumé d'auteur)
%$ 076AMEPLA03