Diversity of Colletotrichum lindemuthianum races in Antioquia and evaluation of cream-red bean germplasm for anthracnose resistance.
To verify the composition of
Colletotrichum lindemuthianum races in east of Antioquia,
12 differential bean varieties were used to characterize 15
isolates collected from naturally infected bean varieties.
Eleven races were identified among the 15 isolates
characterized, six of which (races 9, 131, 135, 139, 643, y
645) were characterized for the first time. In addition, we
evaluated 49 bean genotypes collected from the bean
genebank of CIAT and CORPOICA, as well as landraces
from farmers in producing. These genotypes were evaluated
under natural field conditions as well as in the greenhouse,
using races 651 and 653, previously identified as the most
virulent races from Antioquia. Only four genotypes
(AND1084, SUG130, LAS106 and Diacol Catio) were
resistant under both field and greenhouse conditions. These
genotypes can be used as parents in breeding programs to
introduce anthracnose resistant genes to bean genotypes with
commercial seed types.