Isolation of endophytic fungi from Camptotheca acuminata and the screening method of antitumor secondary metabolite produced by the fungi;

Advances in the study of the antioxidantsscreening methods;

The establishment of screening method of in vivo induced genes from Shigella flexneri2a;

This artical summarized the impact factors on process of protoplast preparation,regeneration and fusion,compared the protoplast fusion methods,the fusion of screening methods for the selection of appropriate and effective methods and induced fusion screening methods.

This paper reviewed the research advances in screening the crops with high phosphorus efficiency and summed up the existing research of four aspects of screening methods,screening period,screening pressure and screening indexes.

Besides the screening by bacillus thuringiensis, the mixture of bacterial plant, complex agent prescription screening and control effects in natural condition were studied.