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Conservation of the genetic resources of cassava (Manihot Esculenta) Determination of wild species localities with emphasis on probable origin

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Abstract

Wild species ofManihot are progenitors of cassava. They constitute valuable genetic reservoirs with genes of new characters. Study of geographic distribution of wildManihot species showed concentration of wild species in a number of centers in South and Central America. Considering Vavilov’s concept of centers of diversity based on the Age and Area hypothesis of Willis, and Harlan’s theory of Introgression, and by studying Indian immigrations in Pre-Columbian times, it is assumed that northern Amazonia is the place of domestication of cassava and that Goias is the primary center of diversity ofManihot species as a “biological group”.

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Authors and Affiliations

  1. Professor of Genetics, Universidade Federal de Goiás, Instituto de Ciéncias Biológicas, Caixa Postal 591, Goiânia, Goias, Brazil

    Nagib M. A. Nassar

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  1. Nagib M. A. Nassar
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Supported by a grant from the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria and the International Development Research Centre, Ottawa, Canada.

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Nassar, N.M.A. Conservation of the genetic resources of cassava (Manihot Esculenta) Determination of wild species localities with emphasis on probable origin. Econ Bot 32, 311–320 (1978). https://doi.org/10.1007/BF02864705

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  • DOI: https://doi.org/10.1007/BF02864705

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