Theoretical and Applied Genetics

, Volume 117, Issue 4, pp 489–497 | Cite as

Phylogeny and origin of pearl millet (Pennisetum glaucum [L.] R. Br) as revealed by microsatellite loci

  • Ibrahima Oumar
  • Cédric Mariac
  • Jean-Louis Pham
  • Yves Vigouroux
Original Paper

Abstract

During the last 12,000 years, different cultures around the world have domesticated cereal crops. Several studies investigated the evolutionary history and domestication of cereals such as wheat in the Middle East, rice in Asia or maize in America. The domestication process in Africa has led to the emergence of important cereal crops like pearl millet in Sahelian Africa. In this study, we used 27 microsatellite loci to analyze 84 wild accessions and 355 cultivated accessions originating from the whole pearl millet distribution area in Africa and Asia. We found significantly higher diversity in the wild pearl millet group. The cultivated pearl millet sample possessed 81% of the alleles and 83% of the genetic diversity of the wild pearl millet sample. Using Bayesian approaches, we identified intermediate genotypes between the cultivated and wild groups. We then analyzed the phylogenetic relationship among accessions not showing introgression and found that a monophyletic origin of cultivated pearl millet in West Africa is the most likely scenario supported by our data set.

Notes

Acknowledgments

I.O. was funded by the Agence Universitaire de la Francophonie (AUF). This work was supported by the Institut de Recherche pour le Développement - IRD. We thank S. Tostain and G. Bezançon for their discussion and help in the choice of pearl millet samples, and R. Oldham for help during redaction of the article. The two anonymous reviewers significantly improved the previous version of the manuscript.

Supplementary material

122_2008_793_MOESM1_ESM.pdf (31 kb)
MOESM1 [Supplementary Table 1] (PDF 30 kb)

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Ibrahima Oumar
    • 1
    • 2
  • Cédric Mariac
    • 1
  • Jean-Louis Pham
    • 1
  • Yves Vigouroux
    • 1
  1. 1.IRD, UMR DIAPC Diversité et Adaptation des Plantes Cultivées (SupAgro, INRA, IRD, UMII) Institut de Recherche pour le DéveloppementMontpellierFrance
  2. 2.LMBA Laboratoire de Microorganisme et de Biomolécule Active Faculté des Sciences de TunisTunisTunisie

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