Analysis of Genetic Diversity and Geographic Relationship of Blumeria graminis f. sp. tritici in Northeastern Wheat Region
ZHU Guiqing
CHI Wenjuan
WU Xianxin
CAO Yuanyin?
Abstract：The genetic diversity of 26 Blumeria graminis f. sp. tritici races collected from Liaoning spring wheat region and Shandong,Henan and Hubei winter wheat regions was analyzed by ISSR( inter-simple sequence repeat)-PCR,and the relationship with their geographic sources was also explored. During 18 random primers used,eight primers could produce stable DNA polymorphism map. According to the DNA polymorphism cluster analysis,26 races clustered into four groups. To some extent,the correlation existed between virulence polymorphism and DNA polymorphism of Blumeria graminis from above four provinces. Based on the DNA polymorphism cluster analysis result, the most predominant races and the sub-predominant races from the above regions could come together into same clusters, especially the most predominant races 11 and 411 of Liaoning and Shandong provinces. The above molecular evidence indicated a high phylogenetic relationship between the population of Blumeria graminis in northeast spring wheat region and those in Hubei,Henan,especially Shandong winter wheat regions, supporting the early speculation that the initial inoculum source of wheat powdery mildew in northeast spring wheat region comes from Shandong province and other southern winter wheat regions.
Keywords：Blumeria graminis f. sp. triticiISSRgenetic diversitygeographic relationship
Publication Date：2015-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 77-82 )