Bakasso Y., Zaman-Allah M., Mariac Cédric, Billot C., Vigouroux Yves, Zongo J. D., Saadou M. (2014). Genetic diversity and population structure in a collection of roselle (Hibiscus sabdariffa L.) from Niger. Plant Genetic Resources-Characterization and Utilization, 12 (2), p. 207-214. ISSN 1479-2621.
Titre du document
Genetic diversity and population structure in a collection of roselle (Hibiscus sabdariffa L.) from Niger
Bakasso Y., Zaman-Allah M., Mariac Cédric, Billot C., Vigouroux Yves, Zongo J. D., Saadou M.
Source
Plant Genetic Resources-Characterization and Utilization, 2014,
12 (2), p. 207-214 ISSN 1479-2621
Roselle (Hibiscus sabdariffa L.) is an economically important plant in Niger. Little is known about its genetic diversity and population structure. In this study, we performed the first diversity assessment of a collection of 124 roselle accessions and 16 accessions of its close relatives Hibiscus cannabinus and Abelmoschus esculentus. Our study was based on ten agromorphological traits and 267 amplified fragment length polymorphism markers. We identified two major distinct groups in H. sabdariffa using a Bayesian method. These two genetic groups were associated with statistical differences for three phenological characteristics: number of days to flowering, 100-seed weight and calyx size. However, the calyx colour, i.e. a morphological characteristic often used to classify different local ecotypes, did not superimpose this separation. Our findings suggested that roselle diversity is genetically structured; the two different groups were clearly associated with morphological differences but were not commonly used by farmers for their classification. The impact of the perceived ecotype structure and its consequence on farmer management is discussed.
