Abstract

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Title:: Response of POD Activity in Glycine soja ?Inoculated by Phytophthora sojae

Author(s):: CHENG Peng¹; XU Peng-fei²; FAN Su-jie²; JIN Li-mei²; WU Jun-jiang³; WANG Jin-sheng³; ZHANG Shu-zhen ²; （1.Heilongjiang Agricultural Technology Extension Station,Harbin 150036,China;2.Key Laboratory of Biology in Chinese Ministry of Education/Key Laboratory of Biology and Breeding & Genetics for Soybean in Northeast China,Ministry of Agriculture/Soybean Research Institute of Northeast Agricultural University,Harbin 150030,China;3.Soybean Research Institute of Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China）

Keywords:: Phytophthora root and stem rot of soybean; Glycine soja; Peroxidase

Abstract:: Phytophthora root and stem rot caused by Phytophthora sojae is a world wide destructive soybean disease,it may attack plants at any growth stage,causing root and stem rot.The principle of POD activity changes in roots，stems and leaves of soybean varieties with different resistance to Phytophthora sojae and the effect of POD on resistance to this disease were researched.The results showed that the POD activities of leaves in resistant soybean varieties increased compared with the susceptible soybean varieties at most of the pathogenicity stages,and it was also higher than that of control.The reaction of POD in roots and stems increased at most of the pathogenicity stages,however，the change extent was relatively low.