The septal ultrastructure of Rhizoctonia solani after culturing for two days was observed by transmission electron microscopy, it was found that the inclusion body blocked the orifice of septal pore cap, and the septal pore channel was extruded by the folding cell membrane and formed a flat semi-round on cross section.

Automatically discriminating overlapped cell based on shape factor analysis:a technical study;

For the favorable character of the singular values eigenvector,the author takes advantage of the method of two-dimension adaptive thresholding segmentation algorithm to make the overlapped cells and their background detached, then divide the overlapped c.