Diack O., Kane N. A., Berthouly Cécile, Gueye M. C., Diop B. M., Fofana A., Sy O., Tall H., Zekraoui Leila, Piquet M., Couderc Marie, Vigouroux Yves, Diouf D., Barnaud Adeline. (2017). New genetic insights into pearl millet diversity as revealed by characterization of early- and late-flowering landraces from Senegal. Frontiers in Plant Science, 8, p. art. 818 [9 p. ]. ISSN 1664-462X.
Titre du document
New genetic insights into pearl millet diversity as revealed by characterization of early- and late-flowering landraces from Senegal
Année de publication
2017
Auteurs
Diack O., Kane N. A., Berthouly Cécile, Gueye M. C., Diop B. M., Fofana A., Sy O., Tall H., Zekraoui Leila, Piquet M., Couderc Marie, Vigouroux Yves, Diouf D., Barnaud Adeline
Source
Frontiers in Plant Science, 2017,
8, p. art. 818 [9 p. ] ISSN 1664-462X
Pearl millet (Pennisetum glaucum (L.) R. Br.) is a staple food and a drought-tolerant cereal well adapted to Sub-Saharan Africa agro-ecosystems. An important diversity of pearl millet landraces has been widely conserved by farmers and therefore could help copping with climate changes and contribute to future food security. Hence, characterizing its genetic diversity and population structure can contribute to better assist breeding programs for a sustainable agricultural productivity enhancement. Toward this goal, a comprehensive panel of 404 accessions were used that correspond to 12 improved varieties, 306 early flowering and 86 late-flowering cultivated landraces from Senegal. Twelve highly polymorphic SSR markers were used to study diversity and population structure. Two genes, PgMADS11 and PgPHYC, were genotyped to assess their association to flowering phenotypic difference in landraces. Results indicate a large diversity and untapped potential of Senegalese pearl millet germplasm as well as a genetic differentiation between early-and late-flowering landraces. Further, a fine-scale genetic difference of PgPHYC and PgMADS11 (SNP and indel, respectively) and co-variation of their alleles with flowering time were found among landraces. These findings highlight new genetic insights of pearl millet useful to define heterotic populations for breeding, genomic association panel, or crosses for trait-specific mapping.
Plan de classement
Sciences du monde végétal [076]
Description Géographique
AFRIQUE SUBSAHARIENNE
Localisation
Fonds IRD [F B010070053]
Identifiant IRD
fdi:010070053
