Sources of resistance to angular leaf spot in a Phaseolus vulgaris germplasm collection in Brazil

Abstract

Angular leaf spot disease is one of the most important diseases of common bean, causing economic losses in Brazil and worldwide. The Germplasm Collection from Universidade Federal de Lavras, Brazil, comprises landraces from producers and cultivars or inbreeding lines from breeding programs that were conducted mainly to increase grains yield. Greenhouse evaluations of these accesses can provide information of potential sources of resistance to introduce on current breeding programs. New methodologies of inoculation and evaluation of symptoms using seedlings offer advantages to the process of resistance evaluation (Pereira et al. 2011; Librelon, 2013). Therefore, our aim is to evaluate the reaction common bean accesses of the Germplasm Collection to the most frequent Pseudocercospora griseola race 63-63 (Damasceno-Silva et al. 2008, Balbi et al. 2009, Pereira et al. 2013) and obtain useful information to breeding programs.