Genetic Diversity of Magnaporthe grisea from Rice in Jiangsu in 2007 and 2008

doi:10.7668/hbnxb.2011.04.023

Abstract

Abstract: Pathogenicity determination and Pot2rep-PCR techniques were used to analyze the diversity of Magnaporthe.grisea from Jiangsu in 2007 and 2008,respectively.They were divided into 10 Physiological race and 14 lineages,in which ZG1 and JSL5 are dominant.The results showed that the rice blast fungus are rich in diversity in Jiangsu,but when compared with the group structure of 1999-2002,it tends to be more simple;By analyzing temporal and spatial distribution of M.grisea,we found that Population structure of M.grisea varied significantly between years and diferent rice cultivation areas of Jiangsu;By combining pathotypes and genetic lineages analysis,no obvious corresponding relationship was found between them.There is a certain similarity in region variations between pathotypes and genetic lineages,which indicated that there is something in common between pathotypes and DNA polymorphism examination at the macro-level,therefore,to a certain extent,they can reflect the diversity of Magnaporthe grisea all.

Key words: Lilium brownii, Brown lily, Greenish lily, RAPD, Cluster Analysis

CLC Number:

Q751

JIANG Jian-ping, YANG Mao-xun, HUANG Yong-fang. Genetic Diversity of Magnaporthe grisea from Rice in Jiangsu in 2007 and 2008[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(4): 130-134. doi: 10.7668/hbnxb.2011.04.023.

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