Abstract:
The resistant and susceptible varieties of Huipizhi Heicbu and Liaocbu 15 were tested against to soybeancyst nematode(Heterodera glycines ,SCN).The plants were inoculated eggs of SCN ater trefoil stage indoor and the sartrples of mots were obtained after the inoculation of SCN 5 ,10 ,15 ,20 ,25 ,30 d. The samples activities of plant resistance-correlated enzymes were mensurated including PPO (polyphenol oxidase) ,POD (peroxidase) and PAL (phenylalanine) ,andcontent of total phenolics and isoflavone were also determined ,in order to reveal the biochemical mechanism of HuipizhiHeidou resistant to race 3 of SCN.The results showed that the activities of PPO ,POD ,PAL could be increased both inHuipizhi Heidou and Liaocbu 15 ,and the fastigium of defense enzyme activities presented earlier in Huipizhi Heidou thanLiaocbu 15 ,the contents of total phenolics and isoflavone could also be increased in Huipizhi Heidou and Liaocbu 15.
Key words:
Huipizhi Heicbu,
Heterodera glycdnes,
Defense enzyme,
Total phenolics,
Isoflavone
CLC Number:
LIU Da-wei, DUAN Yu-xi, CHEN Li-jie, WANG Yuan-yuan, MA Xue-rui. Study on Biochemical Mechanism of Huipizhi Heidou Resistant to Race 3 of Soybean Cyst Nematode[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(1): 165-168. doi: 10.7668/hbnxb.2009.01.036.