Use of molecular markers contribute to the identification of priority coconut accessions in the framework of the global strategy for conservation and use of coconut genetic resources

Baudouin Luc. 2014. Use of molecular markers contribute to the identification of priority coconut accessions in the framework of the global strategy for conservation and use of coconut genetic resources. s.l. : s.n., 37 p.

Résumé : To assist germplasm management using molecular markers, we propose here a method to be used in conjunction with geographic and phenotypic information. It can be used to evaluate the number of accessions that need to be reproduced as safety duplication or triplication. Current knowledge of coconut diversity suggests that 60 Tall or "compact" accessions are sufficient. The additional surface needed to accommodate this safety collection is about 60ha. Most homozygous Dwarf cultivars could be preserved in small numbers. A complementary microsatellite analyses should involve - cultivars/populations already analyzed with insufficient numbers (318 individuals),- analyses in "unchartered areas" of the coconut genetic diversity. map (860 individuals in 10 years),- country-wide studies in Sri Lanka and in the Philippines (with possible extension to India and Indonesia — 200 individuals per country ). To make microsatellite data more available, we improved the user interface of TropGENE-db, introduced more data (554 individuals) and invited 4 countries to input data from about 500 individuals. Finally, we recommend that, once more powerful genotyping methods become available, a representative subset of 50 to 100 individuals analyzed with into analysis programmes.

Classification Agris : F30 - Génétique et amélioration des plantes
P01 - Conservation de la nature et ressources foncières

Auteurs et affiliations

• Baudouin Luc, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/575464/)

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