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Table 5 Contribution of IITA’s genebank to the ancestry of the adopted improved cowpea varieties in Nigeria

From: IITA’s genebank, cowpea diversity on farms, and farmers’ welfare in Nigeria

Cowpea variety Does the cowpea variety have a genebank ancestor? How many genebank ancestors are in the pedigree respective of number of appearances? How many genebank ancestors are in the pedigree relative to unique counts? Year of release
IT90K-277-2 (Sasakawa) Yes 14 7 2005
IT89KD-288/Sampea-11 Yes 13 7 2009
IT99K-216-24-2 (Kwankwaso) Yes 22 7 Not yet released
IT89KD-391/Sampea12 Yes 16 8 2009
IT97K-499-35/Sampea-10 Yes 55 8 2008
IT93K-452-1/Sampea8 Yes 29 13 2005
IT99K-573-1-1/Sampea-14 Yes 43 12 2011
IT99K-573-2-1/Sampea-15 Yes 43 12 2011
IT98K-131-2 Yes 33 7 Not yet released
UAM09-1046-6-1 Yes 56 8 Not yet released
UAM09-1055-6 Yes 56 8 2016
IT98K-205-8 Yes 55 9 Not yet released
IAR48 /Sampea 7 Not available Not available Not available Not available
IT98K-491-4 Yes Not available Not available Not Available
IT07K-318-33/Sampea 17 Yes 50 13 2015
IT07K-292-10/Sampea 16 Yes 67 14 2015
  1. Information retrieved from the database of the cowpea program of IITA. “Unique count” refers to the number of IITA ancestors appearing in the pedigree and “number of appearances” refers to the number of times the IITA ancestors have been used in the breeding line