Assessment of genetic diversity among accessions of two traditional leafy vegetables (Acmella uliginosa (L.) and Justicia tenella (Nees) T.) consumed in Benin using amplified fragment length polymorphism (AFLP) markers

Sesamum radiatum is a nutraceutical traditional leafy vegetable highly consumed in Benin. In spite of its importance for food security, nutrition and income generation, very little is known about in the scientific community and it falls into the group of socalled neglected and underutilised species. In order to document the diversity and the various traditional cultural practices associated with the production of this species and assess its ''bringing into cultivation'' levels across zones, a survey was conducted in 10 villages randomly selected from different agroecological and ethnic zones of both northern and central Benin. Data were collected in the different sites through application of Participatory Research Appraisal tools and techniques and analysed using both simple descriptive statistics and multivariate analysis. The study revealed a rich folk nomenclature essentially centred on the slimy texture of the sauce. No apparent intraspecific diversity was reported within S. radiatum at village level but the agromorphological characterisation of 18 accessions collected from different regions of the country revealed the existence of clear and well-structured intraspecific diversity exploitable in breeding for the development of new varieties with the potential to attract premium prices in local markets. In most of the households surveyed S. radiatum was found at the steps 1-4 in the ''bringing into cultivation process''. The production of S. radiatum is still traditional and biologic (no fertilisers, no pesticides). The cultural practices used vary with the producers and are grouped into four categories. Further agricultural experiments are needed to identify appropriate cultural practices for the large production of this species for food, nutrition and income generation. Strengthening the existing germplasm of this species with additional collection from more agroecological zones is proposed for thorough genetic characterisation.

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Black benniseed (Sesamum radiatum Schum. et Thonn.) cultivated as leafy vegetable in Benin

Dansi

Etèka

Adéoti

et al. 2012

Genet Resour Crop Evol

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Phénologie et biologie florale deSesamum radiatumSchumach. & Thon., un légume feuille traditionnel en voie de domestication au Bénin

Ahohuendo

Sinébou

Ahoton

et al. 2012

Acta Botanica Gallica

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Diversity, cultural practices and domestication of Sesamum radiatum Thonn. ex Hornem and Justicia tenella (Nees) T., two neglected and underutilised traditional leafy vegetables consumed in Benin

Etegrave¹,

ka²,

Ahohuendo³

et al. 2011

Afr. J. Agric. Res.

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Sesamum radiatum and Justicia tenella are two traditional leafy vegetables highly consumed in Benin. In spite of their importance in food security, nutrition, and income generation, they still remain very little known to the scientific communities. In order to document their diversity and the various traditional cultural practices associated with their production and identity as well as their domestication levels across zones, a survey was conducted in 10 villages randomly selected from different agroecological and ethnic zones of both northern and central Benin. Data were collected in the different sites through application of Participatory Research Appraisal tools and techniques and analysed using both simple descriptive statistics (means, frequencies, etc.) and multivariate analysis (ANOVA, cluster analysis). The study revealed the existence of clear intraspecific diversity within J. tenella contrarily to S. radiatum for which no apparent diversity was noted. In most of the households surveyed, J. tenella and S. radiatum were found respectively at steps 3 and 4 in the domestication process. The production of these vegetable species is still traditional and biologic (no fertilisers, no pesticides). The cultural practices used are not the same for the two species and vary between households and between ethnic groups. The multivariate analyses (Cluster analysis, PCA) conducted based on the various traditional farming practices to examine the relationship between farmers revealed respectively 4 and 5 categories of producers of J. tenella and S. radiatum corresponding to the same numbers of applied traditional technological packages. Further domestication trials were recommended to develop the best technical packages required to master mass production of the species in the future for the benefit of both producers and consumers. Agromorphological and genetic characterisation were also recommended in order to establish the scientific basis for their varietal improvement.

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Assessment of genetic diversity among accessions of two traditional leafy vegetables (Acmella uliginosa (L.) and Justicia tenella (Nees) T.) consumed in Benin using amplified fragment length polymorphism (AFLP) markers

Cited by 3 publications

References 26 publications

Black benniseed (Sesamum radiatum Schum. et Thonn.) cultivated as leafy vegetable in Benin

Black benniseed (Sesamum radiatum Schum. et Thonn.) cultivated as leafy vegetable in Benin

Phénologie et biologie florale deSesamum radiatumSchumach. & Thon., un légume feuille traditionnel en voie de domestication au Bénin

Diversity, cultural practices and domestication of Sesamum radiatum Thonn. ex Hornem and Justicia tenella (Nees) T., two neglected and underutilised traditional leafy vegetables consumed in Benin

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