Sensitivity to boscalid in field isolates of Sclerotinia sclerotiorum from rapeseed in Henan Province, China

Sensitivity to boscalid in field isolates of Sclerotinia sclerotiorum from rapeseed in Henan Province, China
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中国河南省油菜籽菌核病菌对啶酰菌胺的敏感性

DOI:
10.1111/jph.12679
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发表时间:
2018-04
影响因子:
1.5
通讯作者:
Chen Genqiang
Chen Genqiang
中科院分区:
农林科学4区
文献类型:
--
作者:
Liu Shengming;Fu Liuyuan;Hai Fei;Jiang Jia;Che Zhiping;Tian Yuee;Chen Genqiang

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油菜菌核病是河南省油菜的一种重要病害。啶酰菌胺属于琥珀酸脱氢酶抑制剂(SDHI)类杀菌剂,其中许多化合物对油菜菌核病菌有较强的抑制作用。2015年,从河南省7个不同地区的油菜病株上共分离到175个菌核病菌菌株。175株油菜菌核病菌对啶酰菌胺的EC 50值为0.0073 ~ 0.3880 μg ml-1,平均值为0.15 ± 0.09 μg ml-1。频数分布呈单峰型。啶酰菌胺与多菌灵、腐霉利、异菌脲、二甲菌胺、咯菌腈或氟啶胺之间无交叉耐药性。田间试验表明,啶酰菌胺(50% WG)在225、300和375 g ai ha− 1的处理效果分别为71%、81%和90%。相比之下,多菌灵(50%可湿性粉剂)在1,500 g ai ha− 1时的防治效果仅为52%。
Sclerotinia stem rot caused bySclerotinia sclerotiorumis an important disease of oilseed rape in Henan province of China. Boscalid belongs to succinate dehydrogenase inhibitor (SDHI) fungicides, many of which have strong antifungal activity againstS. sclerotiorum. In 2015, a total of 175 isolates ofS. sclerotiorumwere collected from diseased oilseed rape plants in seven different regions of Henan Province. The EC50values of 175 isolates ofS. sclerotiorumto boscalid ranged from 0.0073 to 0.3880 μg ml−1, and the mean EC50value was 0.15 ± 0.09 μg ml−1. The frequency distribution was unimodal. There was no cross‐resistance between boscalid and carbendazim, procymidone, iprodione, dimethachlone, fludioxonil or fluazinam. Field experiments showed that control efficacies of treatments with boscalid (50% WG) at 225, 300 and 375 g ai ha−1were 71%, 81% and 90%, respectively. In contrast, the control efficacy of carbendazim (50% WP) at 1,500 g ai ha−1was only 52%.
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