CHARACTERIZATION OF THE ANTHRACNOSE RESISTANCE GENE IN ANDEAN COMMON BEAN CORINTHIANO CULTIVAR

摘要

Anthracnose, caused by Colletotrichum lindemuthianum (Sacc. et Magn.) Scrib., is one of the most widespread and economically important fungal diseases of common bean {Phaseolus vulgaris L.). The use of resistant cultivars is the most efficient methodto control common bean anthracnose, and it is important a continuing search for new resistance sources. Until now, ten resistant genes of Mesoamerican origin and three of Andean origin were identified. Among them, Andean genes (Co-12, Co-13 and Co-14), are those with greatest importance since they are present in common bean landraces in Parana. Previous studies carried out at Nupagri-UEM, had shown that Corinthiano genotype, a landrace collected in small farms in Parana State, is resistant to 2, 8, 23,64, 65, 89, 73 and 2047 races of C. lindemuthianum. Therefore, mainly because of its resistance to 2047 race and for being an Andean cultivar, it is so important the genetic characterization of this cultivar for later inclusion in common bean breeding programs that search resistance sources against anthracnose. The present work aimed to characterize genetic resistance of Corinthiano Andean cultivar to races 8, 89 and 2047 of C. lindemuthianum through resistance inheritance study and allelism tests.