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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Diversity of wild and cultivated pearl millet accessions (Pennisetum glaucum [L.] R. Br.) in Niger assessed by microsatellite markers
Theoretical and Applied Genetics, Volume 114, No. 1, Year 2006
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Description
Genetic diversity of crop species in sub-Sahelian Africa is still poorly documented. Among such crops, pearl millet is one of the most important staple species. In Niger, pearl millet covers more than 65% of the total cultivated area. Analyzing pearl millet genetic diversity, its origin and its dynamics is important for in situ and ex situ germplasm conservation and to increase knowledge useful for breeding programs. We developed new genetic markers and a high-throughput technique for the genetic analysis of pearl millet. Using 25 microsatellite markers, we analyzed genetic diversity in 46 wild and 421 cultivated accessions of pearl millet in Niger. We showed a significantly lower number of alleles and lower gene diversity in cultivated pearl millet accessions than in wild accessions. This result contrasts with a previous study using iso-enzyme markers showing similar genetic diversity between cultivated and wild pearl millet populations. We found a strong differentiation between the cultivated and wild groups in Niger. Analyses of introgressions between cultivated and wild accessions showed modest but statistically supported evidence of introgressions. Wild accessions in the central region of Niger showed introgressions of cultivated alleles. Accessions of cultivated pearl millet showed introgressions of wild alleles in the western, central, and eastern parts of Niger. © 2006 Springer-Verlag.
Authors & Co-Authors
Mariac, Cédric
France, Montpellier
Ird Centre de Montpellier
Luong, V.
France, Montpellier
Ird Centre de Montpellier
Kapran, Issoufou
Niger, Niamey
Institut National de Recherches Agronomiques du Niger
Mamadou, Aïssata
Niger, Niamey
Institut National de Recherches Agronomiques du Niger
Sagnard, Fabrice
France, Paris
Cirad
Deu, Monique
France, Paris
Cirad
Chantereau, Jacques
France, Paris
Cirad
Gérard, Bruno G.
Niger, Niamey
International Crops Research Institute for the Semi-arid Tropics Sahelian Center Niamey
Ndjeunga, Jupiter
Niger, Niamey
International Crops Research Institute for the Semi-arid Tropics Sahelian Center Niamey
Bezançon, Gilles
Niger
Institut de Recherche Pour le Développement Ird
Pham, Jean Louis
France, Montpellier
Ird Centre de Montpellier
Vigouroux, Yves
France, Montpellier
Ird Centre de Montpellier
Statistics
Citations: 157
Authors: 12
Affiliations: 5
Identifiers
Doi:
10.1007/s00122-006-0409-9
ISSN:
00405752
Research Areas
Genetics And Genomics
Study Locations
Niger