Reaction of common bean lines to Pseudocercospora griseola in different enviromental conditions

Abstract

Angular leaf spot (ALS) in common bean ( Phaseolus vulgaris L.) caused by fungus Pseudocercospora griseola of is one of the main diseases that affects the crop. This disease mainly infects leaves and pods, inducing premature leaf dropping and consequently reduction in grain quality (Mahuku et al., 2009). Losses in grain yield caused by ALS can reach 80% (Singh and Schwartz, 2010). The use of resistant cultivars is one of the most efficient method to control this disease. Evaluation of common bean lines reaction to P. griseola is important to identify newresistance sources that can be used in common bean breeding program. Furthermore, to determine the best environment condition for this evalution is a challenge. Therefore, this study aimed to compare the reaction of common bean lines to P. griseola in different enviromental conditions.