In order to characterize the anamorphic genus Cylindrocladium eighteen isolates of this funguswere cultivated in different culture media, kept under different temperatures, besides having conidia and terminal vesicles morphologically analyzed for correct identification of the isolates. Inoculations on different hosts were carried out to evaluate of pathogenic behavior of the studied isolates. Concerning the morphologic characters studied, it was observed that alterations occurred in the conidial dimensions and morphology of the terminal vesicles, but was not important considering that is due to substratum changes. However, the natural variability in the general characteristics of these structures indicated that it is difficult to obtain a correct identification of the isolates. In the same culture it was observed terminal vesicles with different morphologies. Pathogenic and physiological differences among the isolates could be observed. This brings the idea of distinct population groups when such characteristics are considered in this study. These differences probably indicate a distinct genetic constitution among the isolates used in this study.
Calonectria; Eucalyptus; morphologic behaviors; physiology
