Download original image
Symptoms of sunflower black stem and characterization of P. macdonaldii. A. Natural infection of black stem on sunflower stem. B. Culture characteristics of P. macdonaldii on PDA. Cotton-like aerial mycelia with black pycnidia underneath the central area. C. Back of the colony. D. Dark, pear-like pycnidia were observed under the microscope. E. Conidia. F. Conidia germinating from one and both sides of conidia. Scale bar = 30 μm (D, E) or 20 μm (F).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.