Conflicting gene trees and phylogenomics;

To study the possible recombinant relationship among differently derived classical swine fever virus,the coding regions of 21 isolates were analyzed to detect recombination and breakpoints through gene trees comparison and quartet analyses.

Comparison of the topologic distances between gene trees further showed that the pathway topologic distance is a more exact measure than the partition topologic distance.

This paper briefly introduces the progresses and created benefits of the gene-modified trees, the artificial nucleic acid, the live vaccine biological water purifier, the ecological cotton pest prevention system, the protein stopping the growth of the cancer call and the technical development of the first artificial yak in the world.

The homology,phylogenetic tree and the genetic variance of the ORF7 gene sequence were analysed.

Photosynthesis light response characteristics of transgenic poplars under pentachlorophenol stress

PCR analysis of transgenic poplars proved that Bt gen.

PCR amplification was applied on selectable marker gene neomycin phosphotransferase II(NPTII) in two transgenic poplar species,P.

The larvae of Micromelalopha troglodyta were fed with leaves of transgenic poplars expressing Bt gene only and expressing Bt and CpTI genes,the activities of esterase in the midgut of larvae raised in the earlier stage,but restricted later.

(2)Transgenic poplars have strong capacity for using high light intensity, and its light saturation point increased than the control by about 10% to 20%.