On-farm management and participatory evaluation of pigeonpea (Cajanus cajan [L.] Millspaugh) diversity across the agro-ecological zones of Benin Republic [post]

2019 unpublished
Pigeonpea is a multipurpose food legume that contributes to food security in Benin. However, its production declined and some landraces are being threatened of disappearance. Previous investigations on pigeonpea in Benin have been restricted to South and Central Benin. Therefore, pigeonpea diversity in northern is still unknown. This study aimed to have a better knowledge of pigeonpea genetic diversity, for its promotion and valorization. Methods: 500 producers of pigeonpea belonging to
more » ... sociolinguistic groups were selected through 50 villages. Data were collected using methods and tools of participatory research appraisal. Folk nomenclatures, taxonomy of pigeonpea and seed system were investigated. The distribution and extent of pigeonpea landraces were evaluated using Four Square Analysis method. A comparative analysis of pigeonpea uses categories, production systems, pigeonpea production constraints, famers' preference criteria and participative evaluation for existing landraces across agro-ecological zones was done. Result: Folk nomenclature and taxonomy were mainly based on seed coat colour and size colour. Seven pigeonpea uses category were recorded including sacrifice, grain processing and fertilization. The results showed that pigeonpea seed system is informal. Based on seed characteristics, fifteen landraces were recorded with seven new landraces. A high rate of landraces threatened of disappearance was observed across the ecological zones. Ten constraints are known affecting pigeonpea production in Benin with pests and diseases as the most important in all agroecological zones. This study revealed that pigeonpea cultivation is increasing in the Sudanian zone. Landraces to be produced must be selected on the basis of 11
doi:10.21203/rs.2.19119/v1 fatcat:hexl7s72prhjlejqwoarga7x7e