[1]段海明,余利,黄伟东,等.不同温度下6种化学杀菌剂对玉米茎腐病菌的抑制活性及与生防菌发酵上清液的混配[J].江苏农业学报,2018,(01):41-49.[doi:doi:10.3969/j.issn.1000-4440.2018.01.006]
 DUAN Hai-ming,YU Li,HUANG Wei-dong,et al.Inhibitory activity of six fungicides to Fusarium graminearum maize stalk rot at different temperatures and mixture screening with antagonistic bacteria fermentation supernatant[J].,2018,(01):41-49.[doi:doi:10.3969/j.issn.1000-4440.2018.01.006]
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不同温度下6种化学杀菌剂对玉米茎腐病菌的抑制活性及与生防菌发酵上清液的混配()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
41-49
栏目:
植物保护
出版日期:
2018-02-25

文章信息/Info

Title:
Inhibitory activity of six fungicides to Fusarium graminearum maize stalk rot at different temperatures and mixture screening with antagonistic bacteria fermentation supernatant
作者:
段海明余利黄伟东余海兵
(安徽科技学院农学院,安徽凤阳233100)
Author(s):
DUAN Hai-mingYU LiHUANG Wei-dongYU Hai-bing
(College of Agriculture, Anhui Science and Technology University, Fengyang 233100, China)
关键词:
玉米茎腐病杀菌剂生防菌发酵上清液
Keywords:
corn stalk rotfungicideantagonistic bacteriafermentation supernatant
分类号:
S482.2+99
DOI:
doi:10.3969/j.issn.1000-4440.2018.01.006
文献标志码:
A
摘要:
为了探究不同温度下化学杀菌剂对玉米茎腐病菌——禾谷镰孢菌(Fusarium graminearum)毒力的变化规律以及筛选化学杀菌剂和生防菌发酵上清液混配的增效组合,采用菌丝生长速率法测定了6种化学杀菌剂、解淀粉芽孢杆菌(Bacillus amyloliquefaciens)gfj-4发酵上清液以及化学杀菌剂与发酵上清液的混配剂对玉米茎腐病菌——禾谷镰孢菌的抑制活性。结果表明,6种化学杀菌剂对禾谷镰孢菌菌丝生长的毒力均随温度下降而升高,20 ℃时6种供试化学杀菌剂的抑菌活性均达最高,而30 ℃时抑菌活性最低。6种化学杀菌剂对病菌的抑制活性由大到小依次为咯菌腈、戊唑醇、苯醚甲环唑、多菌灵、腈菌唑和福美双,其中咯菌腈对禾谷镰孢菌的抑制效果最佳,20 ℃时的EC50值达0.041 μg/ml,26 ℃时EC50为0.057 μg/ml,30 ℃时EC50为0.141 μg/ml;福美双对病菌的抑制效果最差,20 ℃时EC50为6.152 μg/ml,26 ℃时EC50为8.830 μg/ml,30 ℃时EC50为8.924 μg/ml。经毒力倍数分析发现,温度变化对化学杀菌剂毒力的影响次序由大到小依次为戊唑醇、咯菌腈、腈菌唑、苯醚甲环唑、多菌灵和福美双。解淀粉芽孢杆菌gfj-4发酵上清液对玉米茎腐病菌的EC50为62.23 μl/ml(R2=0.98)。6种化学杀菌剂与gfj-4发酵上清液混配增效作用显著。其中,咯菌腈与gfj-4发酵上清液混配比例为6∶4时毒性比达最大,为1.33;戊唑醇、苯醚甲环唑与gfj-4发酵上清液配比为1∶9时毒性比达最大,分别为1.32和1.40;腈菌唑与gfj-4发酵上清液配比为5∶5时毒性比最大,为1.36;多菌灵与gfj-4发酵上清液配比为9∶1和3∶7时毒性比最大,均为1.27;福美双与gfj-4发酵上清液配比为6∶4时毒性比最大,为1.23。
Abstract:
To investigate the changes of fungicides toxicity on the pathogen of the maize stalk rot at different temperatures and screen the new mixture of fungicide and fermentation supernatant, the inhibitory activity of six chemical fungicides, Bacillus amyloliquefaciens fermentation supernatant and their mixture to Fusarium graminearum were determined by mycelial growth rate method. The results showed that the toxicity of six chemical fungicides on the growth of F. graminearum hyphae increased with the decrease of temperature. Six fungicides all had the highest antifungal activity at 20 ℃, and had the lowest antifungal activity at 30 ℃. Six fungicides on the inhibitory activity of pathogen from large to small followed by the fludioxonil, tebuconazole, difenoconazole, carbendazim, myclobutanil and thiram. The effect of fludioxonil on F. graminearum was the most effective, EC50 at 20 ℃ was 0.041 μg/ml, EC50 at 26 ℃ was 0.057 μg/ml, EC50 at 30 ℃ was 0.141 μg/ml. The inhibitory effect of thiram on F. graminearum was the worst, EC50 at 20 ℃ was 6.152 μg/ml, EC50 at 26 ℃ was 8.830 μg/ml, EC50 at 30 ℃ was 8.924 μg/ml. The effect of temperature changes on the toxicity of the fungicide from large to small followed by tebuconazole, fludioxonil, myclobutanil, difenoconazole, carbendazim and thiram. The EC50 of B. amyloliquefaciens gfj-4 fermentation supernatant was 62.23 μl/ml(R2=0.98). Among them, the fermentation supernatant of B. amyloliquefaciens gfj-4 had an universal synergistic effect on the tested fungicides, fludioxonil and fermentation supernatant with a ratio of 6∶4 to the toxicity ratio of 1.33, tebuconazole and difenoconazole mixed with the fermentation supernatant at a ratio of 1∶9 all reached the toxicity ratio of 1.32 and 1.40, myclobutanil and fermentation supernatant with a ratio of 5∶5 to the toxicity ratio of 1.36, carbendazim and fermentation supernatant with a ratio of 9∶1 and 3∶7 to the toxicity ratio of 1.27, thiram and fermentation supernatant with a ratio of 6∶4 to the toxicity ratio of 1.23.

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备注/Memo

备注/Memo:
收稿日期:2017-07-27 基金项目:安徽省教育厅重点项目(KJ2015A238、KJ2017A512);校引进人才项目(ZRC2012326);植物保护重点学科经费项目(AKZDXK2015C04);国家级大学生创新训练计划项目(201710879070) 作者简介:段海明(1982-),男,山东蒙阴人,博士,副教授,主要从事农药毒理与应用技术研究。(Tel)18269896581;(E-mail)duanhm@ahstu.edu.cn
更新日期/Last Update: 2018-03-06