Journal
GENETIC RESOURCES AND CROP EVOLUTION
Volume 60, Issue 3, Pages 1021-1036Publisher
SPRINGER
DOI: 10.1007/s10722-012-9898-3
Keywords
Coffea kianjavatensis; Coffea montissacri; Coffea vatovavyensis; Ex situ germplasm; Madagascar; Microsatellite markers
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Funding
- Association of Zoological Horticulture Conservation
- University of Colorado Museum of Natural History, Department of Ecology and Evolutionary Biology
- Beverly Sears program of the Graduate Division
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Madagascar has 59 species of Coffea, of which 42 are listed as Critically Endangered, Endangered, or Vulnerable by criteria of the Red List Category system of the World Conservation Union. In an attempt to assess the conservation value of ex situ collections of Malagasy coffee species, a study was undertaken using the field genebank collections maintained at the Kianjavato Coffee Research Station. Three species were selected for this purpose, C. kianjavatensis, C. montis-sacri, and C. vatovavyensis, and for comparative purposes extant, in situ populations of the same species were studied. Parentage analyses of ex situ propagated offspring of C. kianjavatensis and C. montis-sacri were performed to assess if crossing with other Coffea species maintained in the field genebank is compromising the genetic integrity of the collection. For these three species, higher genetic diversity was observed in the ex situ populations compared to the in situ populations, highlighting the importance of preserving the plants currently in ex situ collections. Parentage analyses of seed-propagated offspring of C. kianjavatensis and C. montis-sacri revealed that cross contamination with pollen from other Coffea species in the ex situ field genebank is occurring. These results have significant implications for the conservation management of wild Coffea species and for the management of ex situ genebanks.
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