Canker Fungi Groups Of Population Differentiation

AbstractThis dissertation studys Bom psPhaeria dothidea within biology foster propertiesdivision, Pathogen division,VCGs(Vegetative compatibility grop)divison andRFLP(Restriction Fragment Length PolyInorphism)division. The four results are got fl. Four families can be distinguished from their foster biology properties.2. The pathogen division within Hosts and Loci can be seen. The pathogen ofDongBeiQu cultures show the strongest virulence,then that ofXiBeiQu,HuaBeiQu' is the weakest.3. VCGs division demonstrates the cultures of DongBeiQu have the mostdiversitythen that of HuaBeiQu,and the least one is XiBeiQU.4. nyLP shows this type Ftmgi have also Hosts and Loci division. Rose populationand Poplar population can be divided,and DongBeiQu cultures have the mostgyLP polyInorphic,then that of HuaBeiQu, the XiBeiQu has the least diversity.All these indicate BotwosPhaeria dothidea is one cline population,DongBeiQu may beit's origin region, and XiBeiQu cultUres may be one of founder population.As well as above, this stUdy argue with the dispute betWeen BotryosPhaeria dOthideaand BooposPhaeria berengeriana..