Colletotrichum lindemuthianum (teleomorfo Glomerella cingulata f. sp. phaseoli) presents wide genetic variability, demonstrated by its morphological traits. The objective of this study was to characterize morphological markers in different isolates of C. lindemuthianum and, to identify useful morphological markers in genetic analyses. The following morphological and cultural traits were evaluated: color and texture of the colonies, vegetative and sexual compatibility, micelial growth index (MGI), colonial diameter (CD), esporulation capacity (EC), conidia dimensions and form, ascospores dimensions and formation of reproductive structures. The data showed wide genetic variability for all traits and that conidial form can be used as morphological marker in genetic analysis.
Morphological and cultural traits; conidia dimensions and form; conidia and hifas anastomosis; vegetative and sexual compatibility
