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Is the genetic integrity of wild Coffea canephora from Ivory Coast threatened by hybridization with introduced coffee trees from Central Africa?

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  • معلومة اضافية
    • الموضوع:
    • نبذة مختصرة :
      Robusta coffee (Coffea Canephora) is an important source of income and employment, contributing significantly to the economies of many developing countries. This species is split into two genetic groups: Guinean and Congolese. Côte-d'Ivoire is the primary diversification center of the Guinean pool, which offers great potential for genetic improvement. However, genetic erosion of this group is currently a threat in this country because of the massive introduction of Congolese accessions done in the previous decades. In this work, we analyzed the progenies of isolated population of C. canephora composed of a mix of Guinean and Congolese using SNP markers. The analysis is focus on the male parents' contribution in open pollination. The results show that the introduction of cultivars from the Congolese gene pool threat the genetic integrity of wild populations from the Guinean gene pool. Indeed, this analysis showed that Congolese pollens have more ability to pollinate the Guinean group than the Guinean pollen perform on Congolese trees. We recommend that a program be put in place to ensure the conservation of wild population of C. canephora through in situ or ex situ conservation. [ABSTRACT FROM AUTHOR]
    • نبذة مختصرة :
      Resume: Le café Robusta (Coffea Canephora) est une source importante de revenus et d'emplois, contribuant de manière significative aux économies de nombreux pays en voie de développement. La Côte d'Ivoire est le centre de diversification primaire du pool Guinéen qui offre un grand potentiel d'amélioration génétique. L'érosion génétique de ce groupe est actuellement une menace dans ce pays. Cependant, ce pool génétique court un risque plus élevé d'érosion génétique en raison de l'extinction locale. Dans ce travail, Nous montrons comment l'introduction des cultivars du pool génétique Congolais, menace l'intégrité génétique de populations sauvages du pool génétique Guinéen. En effet, les analyses ont montré que les pollens des arbres Congolais sont plus aptes à féconder les arbres Guinéens que les Guinéens le sont pour les Congolais. Ce qui nous fait suggérer la mise en place d'un programme de toute urgence pour la conservation in situ et ex situ de ce pool génétique. [ABSTRACT FROM AUTHOR]