Composition of lineage and virulence type of the Magnaporthe grisea population derived from the nurseries and fields in Fujian Province of China Screening and identification of low temperature-adapted antagonistic Bacillus isolated from Kekexili region of West China and the analysis of the isolates lipopeptide compounds. Analysis of genetic structure of Xanthomonas oryzae pv. oryzicola population from Anhui province Molecular Identification and Distinctness of NSa Male Sterile Cytoplasm in Brassica napus