Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (28): 286-290.doi: 10.11924/j.issn.1000-6850.2014-0736

Special Issue: 生物技术 烟草种植与生产

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Inhibition Effects of Induced Resistance on Tobacco Resistance to Ralstonia solanacearum

  

  • Received:2014-03-18 Revised:2014-03-18 Accepted:2014-07-24 Online:2014-10-15 Published:2014-10-15

Abstract: The objectives of this study were to investigate the inhibition effects of induced resistance on tobacco resistance to Ralstonia solanacearum. The effects of disease index, relative control effect, enzyme activities and content of water-soluble protein were studied after the tobacco leaves had been treated with salicylic acid (SA), riboflavin and oxalate acid, and inoculated with Ralstonia solanacearum the next day. The results showed that after leaf treated with the three induced-resistances, the activities of PAL, POD and PPO, the content of soluble protein were increased while CAT activities were inhibited in leaves. The three resistant inducers could induce the tobacco to produce resistance to Ralstonia solanacearum. At earlier stage (5 d), the riboflavin had the best induced resistance effects, the effective percentage was 55.71% , and there were no significant differences with SA. At mid-term (8 d), SA had the highest induced resistance effects, the effective percentage was 42.20% , and significantly higher than the other two. At later stage (11 d), SA had the best induced resistance effects; the effective percentage was 33.67%.