Agro-morphological characterization for leaf-spot resistance of some local peanut ecotypes (arachis hypogaea l.)

Author: 
R. Bernard SAWADOGO, S. NANKONE, M. Bertin ZAGRE, E. SAWADOGO COMPAORE, Philippe SANKARA and K. Marie-Laure GUISSOU

Subject description: Groundnuts (Arachis hypogaea L.) occupy an important place in traditional farming systems. However, yields in dry African savannas are less than one ton per hectare in extensive cultivation. These low yields are due, among other things, to precarious rainfall conditions, to the low distribution of improved varieties, but also to the non-development of local plant potential. In fact, compared to local cultivars, very few studies have been made. The exploitation and enhancement of this local phylogenetic potential could contribute to improving the production and productivity of peanuts. It is in this perspective that our work is part of a genetic analysis of the characteristics linked to the yield and resistance to leaf-spot disease of local peanut ecotypes. The general objective of this study is to evaluate the performance of local peanut ecotypes collected in three regions of Burkina, by field screening in order to identify the genotypes resistant to leaf-spot and having good yields. Method. The experiment was carried out for two years and at two sites Gampela and Farakoba according to the completely randomized three-repeat Fisher block experimental design. Emergence, stocking density, height, wingspan, disease severity, percent defoliation, and yield components were noted. Data from all observations were analyzed using XLSTAT Pro 7.1 statistical analysis software. Results. At the end of this study, we could identify two (02) resistant genotypes and three (03) moderately resistant genotypes to leaf-spot. Conclusions: These resistant genotypes are an addition to the list of resistant varieties and could be used as a source of resistance in a variety improvement program.

Paper No: 
3916