中生菌素对Erwinia amylovora抑菌效果及库尔勒香梨生长安全性评价  

Evaluation of Antibacterial Effect of Zhongshengmycin on Erwinia amylovora andGrowth Safety of Korla Fragrant Pear

作　　者：何家静 马翔宇 刘振亚[1] 李亚鹏[1] 张王斌[1] HE Jiajing;MA Xiangyu;LIU Zhenya;LI Yapeng;ZHANG Wangbin(Tarim University,The nationa land local joint engineering laboratory of high efficiency and superior-quality cultivation and fruit deep processing technology of characteristic fruit treesin SouthXinjiang,Key lab of Xinjiang production and construction corps in comprehensive agricultural pest management in Southern Xinjiang,Scientific observing and experimental station of crop pests in Alar,Ministry of agriculture and rural affairs,Alar Xinjiang 843300,China)

机构地区：[1]塔里木大学南疆特色果树高效优质栽培与深加工技术国家地方联合工程实验室/南疆农业有害生物综合治理兵团重点实验室/农业农村部阿拉尔作物有害生物科学观测实验站,新疆阿拉尔843300

出　　处：《果树资源学报》2024年第6期30-33,38,共5页Journal of Fruit Resources

基　　金：兵团财政科技计划资助重点领域科技攻关计划项目(2018AB038)。

摘　　要：【目的】研究不同浓度梯度下中生菌素对梨火疫病的抑制效果,以及在库尔勒香梨发育的不同时期是否产生药害,旨在评价中生菌素对梨火疫病菌的抑菌效果及其对库尔勒香梨生长的安全性影响,为中生菌素在果树病害防治中的应用提供科学依据。【方法】采用抑菌圈法分析42.62%中生菌素原药在100、200、400、800和1 600稀释倍数条件下的抑菌圈直径大小、抑菌率和对梨火疫病菌的毒力,并对不同稀释后的抑菌效果做了安全性评价。【结果】结果显示,稀释倍数在100~1 600倍范围内其对梨火疫病抑菌率为65.34%~77.67%,抑制圈平均直径和抑菌率随着中生菌素原药稀释倍数的增加呈现下降变化趋势,100~400倍稀释条件下抑菌圈平均直径差异不显著,800~1 600稀释条件下抑菌圈平均直径显著或极显著下降;喷药结束后的第120 h时中生菌素药害趋于稳定,EC_(50)值为23.021 mg/L;随着稀释倍数的不断增加,药害指数在花芽萌动期、花期和幼果期均表现为下降变化,且药害指数在0~200倍稀释范围内的下降速率显著高于200~1 200倍稀释范围。【结论】结合中生菌素对梨火疫病菌的抑菌效果和中生菌素对梨火疫病菌的毒力比较可以确定,42.62%中生菌素在200~400倍稀释范围内使用对库尔勒香梨火疫病菌防治效果最佳。【Objective】The inhibitory effect of Zhongshengmycin on pear fire blight bacteria under different concentration gradients and whether it caused phytotoxicity at different stages of Korla fragrant pear development were studied.The purpose was to evaluate the antibacterial effect of Zhongshengmycin on pear fire blight bacteria and its safety effect on the growth of Korla fragrant pear,and to provide scientific basis for the application of Zhongshengmycin in the prevention and control of fruit tree diseases.【Methods】The size of the inhibition,the virulence of 4200,200,100,100,800 and 1600,and the safety of different dilutions was evaluated.【Results】The results show that,from 100 to 1600 times,65.34%to 77.67%,The average diameter of the inhibitory circle and the antibacterial rate showed a decreasing trend with the increase of the dilution ratio of Zhongshengmycin,No significant difference in mean coil diameter between 100 to 400-fold dilution,The average diameter of the bacteriosphere was significantly or significantly decreased between 800 and 1600 dilutions;At 120 h after the end of spraying,The EC_(50) value is 23.021 mg/L;With the increasing dilution ratio,The drug damage index showed decreasing changes in the budding,flowering and young flower stage,Moreover,the decrease rate of the drug harm index in the 0-to 200-fold dilution range was significantly higher than the 200-to 1,200-fold dilution range.【Conclusion】Combine the antibacterial effect of isocin on pear fire blight bacteria and the virulence of mesocin on pear fire blight bacteria.42.62%of isocin had the best control effect in 200 to the 400 times dilution range.

关 键 词：库尔勒香梨 火疫病菌 中生菌素 毒力测定 安全性评价 

分 类 号：S661.2[农业科学—果树学]