, Volume 24, Issue 3, pp 699–707 | Cite as

Natural hybridization among wild, weedy and cultivated Vigna unguiculata (L.) Walp.

  • Kanti M. Rawal


As is the case with many cultivated species, Vigna unguiculata (L.) Walp. has a wild form growing in secondary forests and derived savannahs and a companion weed form adapted to disturbed habitats such as roadside ditches and fields. Evidence of introgressive hybridization between weedy and cultivated forms has been presented. The zone of extensive natural hybridization corresponds to the cultivation area in northern Nigeria and Niger and may well extend to Upper Volta and Senegal. The pattern of distribution of wild and weedy forms, the extent of introgression and ethnobotanical evidence strongly suggest West Africa as the center of domestication for V. unguiculata.


Plant Physiology Nigeria Secondary Forest Natural Hybridization Cultivation Area 
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  1. Brittingham, W. H., 1950. The inheritance of data of pod maturity, pod length, seed shape and seed size in the southern pea, Vigna sinensis. Proc. Am. Soc. hort. Sci. 56: 381–388.Google Scholar
  2. Dalziel, J. M., 1937. The useful plants of West Tropical Africa. Crown Agents, London. 612pp.Google Scholar
  3. Faris, D. C., 1965. The origin and evolution of the cultivated forms of Vigna sinensis. Can. J. Genet. Cytol. 7: 433–452.Google Scholar
  4. Fawole, I., 1973. The inheritance of seed weight in cowpeas. Vigna unguiculata (L.) Walp. Unpublished M. Phil. Thesis, University of Ife,Ile-Ife.Google Scholar
  5. Franckowiak, J. D. & L. N. Barker, 1975a. Allelles at the R locus in cowpea, Vigna unguiculata (L.) Walp, Crop Sci. (in press).Google Scholar
  6. Franckowiak, J. D. & L. N. Barker, 1975b. Inheritance of testa color and pattern in cowpea. J. Heredity: (in press).Google Scholar
  7. Harlan, J. R., 1970. Evolution of cultivated plants. In: O. H. Frankel & E. Bennet (Eds), Genetic resources in plants-their exploration and conservation, pp. 19–32. Oxford, Blackwell Scientific Publs.Google Scholar
  8. Harlan, J. R., 1969. Evolutionary dynamics of plant domestication. Jap. J. Genet. 44, Suppl. 1: 337–343.Google Scholar
  9. Harlan, J. R., 1965 The possible role of weed races in the evolution of cultivated plants. Euphytica 14: 173–176.Google Scholar
  10. Harlan, J. R. & J. M. J. deWet, 1965. Some thoughts about weeds Econ. Bot. 19: 16–24.Google Scholar
  11. Mackie, W. W., 1946. Blackeye beans in California. Calif. agric. Exp. Stn. Bull. 696.Google Scholar
  12. Piper, C. V., 1912. Agricultural varieties of the cowpea and immediately related species. USDA Bur. Plant Indus. Bull 229, 160 pp.Google Scholar
  13. Piper, C. V., 1913. The wild prototype of the cowpeas. USDA Bur. Plant Indus. Circ. 124: 29–32.Google Scholar
  14. Porter, W. M., K. M. Rawal, K. O. Rachie, S. R. Singh, H. C. Wien & R. J. Williams, 1975. The catalog of germplasm, evaluation of Vigna unguiculata (L.) Walp. International Institute of Tropical Agriculture, Ibadan, 250 pp.Google Scholar
  15. Rachie, K. O. & L. M. Roberts, 1974. Grain legumes for the lowland humid tropics. Adv. Agron. 26: 1–132.Google Scholar
  16. Roy, R. S. & R. H. Riccharia, 1948. Breeding and inheritance studies on cowpea, Vigna sinensis. J. Am. Soc. Agron. 40: 479–489.Google Scholar
  17. Sen, N. K. & J. G. Bhowal, 1960. Cytotaxonomic studies on Vigna. Cytologia 25: 195–207.Google Scholar
  18. Verdcourt, B., 1970. Studies in the Leguminosae-Papilionoideae for the Flora of Tropical East Africa: IV. Kew Bull. 24: 507–569.Google Scholar

Copyright information

© H. Veenman En Zonen B.V. 1975

Authors and Affiliations

  • Kanti M. Rawal
    • 1
  1. 1.International Institute of Tropical AgricultureIbadanNigeria

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