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Description of cocoa clones proposed for the "CFC/ICCO/IPGRI project collection"

Sounigo O., Bekele F.L., Iwaro A.D., Thévenin J.M., Bidaisee G., Umaharan R., Sankar A., Sukha D.A., Motilal L.A., Butler D.R., Eskes A.. 2006. In : Eskes Albertus (ed.), Efron Yoel (ed.). Global approaches to cocoa germplasm utilization and conservation : Final report of the CDC/CCO/IPGRI project on "Cocoa germplasm utilization and conservation: A global approach" (1998-2004). Amsterdam : CFC, p. 67-81. (CFC Technical paper, 50).

One important activity of the CFC/ICCO/IPGRI project entitled "Cocoa Germplasm Utilization and Conservation: a Global Approach" was the choice of approximately 100 cocoa clones to be distributed to all participating countries. The purpose was to help cocoa breeders worldwide to introduce into their research stations a collection enriched in sources of favourable alleles for several traits, such as resistance to several diseases (black pod (Phytophthora pod rot or Ppr) and witches' broom diseases, moniliasis and Ceratocystis fimbriata) and bean and pod characteristics (mean weight of one bean, fat content, pod index). The data used to establish the choice of 112 clones were obtained at the Cocoa Research Unit (CRU), in Trinidad, but also from other research institutes, from the International Cocoa Germplasm Database (ICGD) (University of Reading), or by informal contacts with researchers from several countries. In addition, the choice of the clones was made with the aim of including a large amount of genetic diversity. This was ensured by choosing clones from a large number of populations, and by the use of molecular markers. Most of the clones were selected in the International Cocoa Genebank, Trinidad (ICG,T). The selected clones have been sent to the Reading International Cocoa Quarantine, from where they will be distributed to the research institutes. A catalogue with a detailed description of the selected clones has been prepared and this catalogue has been distributed to every participating institute on a CD-ROM.

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