Determining Genetic Similarities and Relationships among Cowpea Breeding Lines and Cultivars by Microsatellite Markers

By Chengdao Li, C. Fatokun, B. Ubi, Bir B. Singh, G. Scoles. 2001

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Genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] in four West African and USA breeding programs as determined by AFLP analysis (2007, background): “Analysis of AFLP (Fatokun et al. 1997) and microsatellite marker (Li et al. 2001) polymorphisms from 90 IITA breeding lines, indicated relatively low genetic diversity, despite 18 of the 90 lines having been developed from crosses with wild cowpea accessions.”
Recent advances in cowpea [ Vigna unguiculata (L.) Walp.] “omics” research for genetic improvement (2011, background): “…among cowpea varieties and molecular polymorphism between drought tolerance and sensitive varieties, and also between the higher and lower nitrogen fixing cowpea accessions (Spencer et al., 2000; Li et al., 2001; Tosti and Negri, 2002; Fall et al., 2003; Badiane et al., 2004; Diouf and Hilu, 2005).”
Morphological and molecular diversity within Algerian cowpea (Vigna unguiculata (L.) Walp.) landraces (2010, methodology): “…Algeria (consisting of the cultivation of the seeds obtained from the same field in subsequent generations without the importation of foreign seeds) probably contributes to genetic uniqueness by strengthening specific, local adaptations (Ehlers and Hall 1997; Li et al. 2001; Badiane et al. 2004).”