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Journal of Agriculture ›› 2016, Vol. 6 ›› Issue (9): 31-36.doi: 10.11923/j.issn.2095-4050.cjas16040033

Special Issue: 小麦

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Sensitivity of Gibberella zeae(Schwein.)Petch to carbendazim and correlation to fungicides

  

  • Received:2016-04-29 Revised:2016-05-23 Accepted:2016-05-24 Online:2016-09-29 Published:2016-09-29

Abstract: In order to investigate the resistance of Gibberella zeae (Schwein.) Petch to carbendazim and the cross resistance to carbendazim and other fungicides, the drug resistance of 520 isolates of G.zeae (Schwein.) Petch collected from 26 counties (cities) in Jiangsu Province were detected by the method of distinguishing dosage method, and then 10 isolates with different sensitivities to carbendazim were used to study the cross resistance to azoxystrobin, pyraclostrobin, trifloxystrobin, pyrametostrobin, epoxiconazole, hexaconazole, triticonazol and fludioxonil by the method of mycelium growth rate method. The results showed that the resistance frequency of G.zeae (Schwein.) Petch of different counties (cities) in Jiangsu was different, and the total resistance frequency was 50.58%; correlation analysis of EC50 showed that there was no cross resistance between carbendazim and other fungicides. These results suggested that G.zeae (Schwein.) Petch in Jiangsu had relatively high resistance frequency to carbendazim, and it was urgent to screen new fungicide to control fusarium head blight.