Abstract: The 4 materials 8407(R),He304(R),Guan291(S) and Chunyuehuang(S) which have different re-sistance to TuMV,were chosen to be the material plants. They were inoculated with TuMV-C₄ at seedling stage. Activi-ties of SOD,POD,CAT and H₂O₂ content from 4 materials were detected within 24 days after being inoculated with TuMV.The results showed that significant differences in the changes of enzymes activities of POD,CAT and H₂O₂ content existed in different materials. The enzymes activities of POD,CAT and H₂O₂ content in resistant materials had some changes with TuMV infection,but could gradually return to normal. The enzymes activities of POD,CAT and H₂O₂ content in susceptible materials all had significant changes,and could not return to normal after being in-oculate with TuMV. Overall TuMV resistance of Chinese cabbage had the most closely relationship with H₂O₂ and CAT,and had less relationship with POD,and had no relationship with SOD.

Key words: Chinese cabbage, TuMV, Enzyme activity, H₂O₂

CLC Number: 

• S634.1