期刊
GENOME
卷 51, 期 11, 页码 912-921出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/G08-080
关键词
cassava; clonally propagated crop; farmers' practices; genetic diversity; landraces; Manihot esculenta Crantz; sexual reproduction
资金
- FFEM (Fonds Franqais pour l'Environnement Mondial)
- CIRAD
- Ministry of Agriculture in Vanuatu
- Centro Internacional de Agricultura Tropical, Colombia
Cassava (Manihot esculenta Crantz) is a clonally propagated crop that was introduced into the South Pacific archipelago of Vanuatu in the 1850s. Based on a survey conducted in 10 different villages throughout the archipelago, we present here a study of its diversity. Farmers' knowledge about cultivation cycle and sexual reproduction of cassava was recorded during group interviews in each village. Using a set of 11 SSR markers, we genotyped the 104 landraces collected and 60 supplementary accessions from a within-landrace study (12 landraces x 5 plants). Out of the 104 landraces collected, we discovered 77 different multilocus genotypes and the within-landrace study identified several polyclonal landraces. Our data suggest a number of hypotheses about the dynamics of diversity of cassava in Vanuatu.
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