| 2015—2021年亚洲玉米螟对Cry1Ie杀虫蛋白的敏感性监测 |
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| 引用本文：王月琴,静大鹏,刘凯强,王振营,何康来.2015—2021年亚洲玉米螟对Cry1Ie杀虫蛋白的敏感性监测.植物保护学报,2024,51(2):405-412 |
| DOI：10.13802/j.cnki.zwbhxb.2024.2023024 |
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| 中文摘要:为明确亚洲玉米螟Ostrinia furnacalis田间种群对Cry1Ie杀虫蛋白的敏感性，于2015—2021年连续7年从黄淮海夏玉米区和北方春玉米区7省14地采集亚洲玉米螟田间种群，采用人工饲料混合法评价其对Cry1Ie杀虫蛋白的敏感性。结果表明，Cry1Ie杀虫蛋白对54个亚洲玉米螟田间种群的抑制中浓度LC50介于0.65~6.28 μg/g之间，其中对2016年齐齐哈尔种群的LC50最低，对2017年肇东种群的LC50最高；LC95介于4.99~70.29 μg/g之间，其中对2015年合肥种群的LC95最低，对2017年松原种群的LC50最高。在LC50水平上，相较于室内对照种群，最敏感种群和最不敏感种群分别为2018年铁岭种群和2017年肇东种群，抗性倍数分别为0.26和1.17。虽然各地理种群对Cry1Ie杀虫蛋白的敏感性存在差异，但均处于敏感水平，且是自然选择的结果，表明Cry1Ie杀虫蛋白可用于亚洲玉米螟田间种群的防治。 |
| 中文关键词:亚洲玉米螟 Cry1Ie杀虫蛋白 地理种群 LC50 抗性监测 敏感性 |
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| Susceptibility monitoring to Cry1Ie in Asian corn borer Ostrinia furnacalis from 2015 to 2021 |
| Author Name | Affiliation | E-mail | | Wang Yueqin | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | wangyueqin@caas.cn | | Jing Dapeng | Syngenta Group China, Beijing 102206, China | | | Liu Kaiqiang | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | Wang Zhenying | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | He Kanglai | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | |
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| Abstract:To determine the susceptibility of Asian corn borer Ostrinia furnacalis field populations to Cry1Ie, specimens were collected from 14 regions of seven provinces in the north spring corn region and Huang-Huai-Hai summer corn region from 2015 to 2021. Diet-incorporation bioassays were conducted to evaluate the susceptibility of these geographic field populations to Cry1Ie. The LC50 values across 54 field populations ranged from 0.65 to 6.28 μg/g, with the lowest LC50 recorded in Qiqihar population in 2016 and the highest in the Zhaodong population in 2017. Similarly, the LC95 values ranged from 4.99 to 70.29 μg/g, with the lowest LC95 observed in Hefei population in 2015 and the highest in the Songyuan population in 2017. Compared to the laboratory population, the Tieling population (2018) exhibited the most susceptibility, while the Zhaodong population (2017) displayed the highest tolerance, with resistance rations of 0.26 and 1.17 at the LC 50 level, respectively. Although field populations showed different levels of susceptibility, they remained susceptible to Cry1Ie, reflecting natural variation. Therefore, Cry1Ie has the potential for the control of the O. furnacalis. |
| keywords:Ostrinia furnacalis Cry1Ie toxin field population lethal concentration 50 resistance monitoring susceptibility |
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