Université Joseph KI-ZERBO, Ecole Doctorale Sciences et Technologies, Laboratoire Biosciences, Equipe Génétique et Amélioration des Plantes (EGAP), 03 BP 7021, Ouagadougou, Burkina Faso
The objective of this study was to evaluate the adaptability of mung bean lines introduced in Burkina Faso and to identify favorable environments for its cultivation. The present study was thus conducted on forty-four mung bean (Vigna radiata) genotypes in two agro-climatic zones of the country, namely the Sahelian zone and the Sudano-Sahelian zone. The experiments were more specifically conducted in three environments of these two agro-climatic zones characterized by an unequal spatio-temporal distribution of rainfall: Pobé, Kamboinsé and Saria. The field trials were conducted during the rainy season using an augmented bloc design with one check. Seeds harvested per plant weight as yield related important trait where recorded and analyzed. The results show that seed yield per plant varied with regards to the environments and to the genotypes. Indeed, the combined analysis of variance revealed the presence of a significant variability and an important influence of the environmental component in this variability. Also, using GGE-biplot analysis, study revealed that the most favorable environments during this mung bean multi-location trial in Burkina Faso where Kamboinsé and Pobé. These are the sites where the best performance in terms of seeds harvested per plant was recorded. GGE-biplot analysis also allowed to identify genotypes that shows specific adaptation to Kamboinsé and to Pobé. These are the genotypes: V 2709; VC 1481A/VC 1560A; NM 94 and 9154 for Pobé in the Sahelian zone, the most arid environment, and genotypes PLM 944; KPS2; Kyungkijaerae 16 and VC 1168D/VC1560A for Kamboinsé a relatively more humid zone.