ArticleHeredity2017
Unexpected pattern of pearl millet genetic diversity among ethno-linguistic groups in the Lake Chad Basin.
Article in Heredity, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 36 citations in OpenAlex.
- Biocultural diversity and crop improvement.Emerging topics in life sciences · 2023Review
- Article
- New insights into the intraspecific cytoplasmic DNA diversity, maternal lineages classification and conservation issues of Tunisian pearl millet landraces.Plant biotechnology (Tokyo, Japan) · 2021Article
- Trees and their seed networks: The social dynamics of urban fruit trees and implications for genetic diversity.PloS one · 2021Article
- Pearl millet genomic vulnerability to climate change in West Africa highlights the need for regional collaboration.Nature communications · 2020Article
- Biocultural diversity of common walnut (Ecology and evolution · 2020Article
- Inter and intra cultural variations of millet (Pennisetum glaucum (L.) R. Br) uses in Niger (West Africa).Journal of ethnobiology and ethnomedicine · 2019Article
- Genomic signatures of adaptation to Sahelian and Soudanian climates in sorghum landraces of Senegal.Ecology and evolution · 2019Article
- VARIETAL IDENTIFICATION IN HOUSEHOLD SURVEYS: RESULTS FROM THREE HOUSEHOLD-BASED METHODS AGAINST THE BENCHMARK OF DNA FINGERPRINTING IN SOUTHERN ETHIOPIA.Experimental agriculture · 2019Article
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Authors and funding
9 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Despite of a growing interest in considering the role of sociological factors in seed exchanges and their consequences on the evolutionary dynamics of agro-biodiversity, very few studies assessed the link between ethno-linguistic diversity and genetic diversity patterns in small-holder farming systems. This is key for optimal improvement and conservation of crop genetic resources. Here, we investigated genetic diversity at 17 SSR markers of pearl millet landraces (varieties named by farmers) in the Lake Chad Basin. 69 pearl millet populations, representing 27 landraces collected in eight ethno-linguistic farmer groups, were analyzed. We found that the farmers' local taxonomy was not a good proxy for population's genetic differentiation as previously shown at smaller scales. Our results show the existence of a genetic structure of pearl millet mainly associated with ethno-linguistic diversity in the western side of the lake Chad. It suggests there is a limit to gene flow between landraces grown by different ethno-linguistic groups. This result was rather unexpected, because of the highly outcrossing mating system of pearl millet, the high density of pearl millet fields all along the green belt of this Sahelian area and the fact that seed exchanges among ethno-linguistic groups are known to occur. In the eastern side of the Lake, the pattern of genetic diversity suggests a larger efficient circulation of pearl millet genes between ethno-linguistic groups that are less numerous, spatially intermixed and, for some of them, more prone to exogamy. Finally, other historical and environmental factors which may contribute to the observed diversity patterns are discussed.
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