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田间研究：调查棉花中Cry51Aa2.834_16对蓟马（缨翅目：蓟马科）和牧草盲蝽（半翅目：盲蝽科）的防治效果

Field Study Investigating Cry51Aa2.834_16 in Cotton for Control of Thrips (Thysanoptera: Thripidae) and Tarnished Plant Bugs (Hemiptera: Miridae).

作者信息

Graham Scott H, Stewart Scott D

机构信息

Department of Entomology and Plant Pathology, West Tennessee Research and Education Center, The University of Tennessee, Airways Boulevard, Jackson, TN.

出版信息

J Econ Entomol. 2018 Dec 14;111(6):2717-2726. doi: 10.1093/jee/toy250.

DOI:10.1093/jee/toy250
PMID:30137474
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6294225/
Abstract

Field experiments were conducted in 2016 and 2017 in Tennessee to evaluate the effects of a novel Bacillus thuringiensis (Bt)-transgenic toxin, Bt Cry51Aa2.834_16, on thrips (Thysanoptera: Thripidae) and tarnished plant bug, Lygus lineolaris (Palisot De Beauvois) (Hemiptera: Miridae), in cotton. Protection from thrips injury with the Bt trait was as good or better than an insecticide-based approach. The use of the Bt trait resulted in reduced numbers of immature tarnished plant bug, particularly large nymphs, and partial protection from plant bug injury. Cotton that expressed Bt Cry51Aa2.834_16 had greater yields than the non-Bt isoline when insecticides were not used. Although Bt Cry51Aa2.834_16 reduced the need for insecticide applications, foliar-applied insecticide applications were needed to provide adequate plant protection from tarnished plant bug. The currently recommended treatment thresholds for tarnished plant bug performed similarly well for Bt Cry51Aa2.834_16 and non-Bt isolines. Insecticide applications for tarnished plant bug increased fiber quality, while Bt Cry51Aa2.834_16 had minor effects. The Bt-transgenic toxin Cry51Aa2.834_16 is expected to reduce the need for insecticide applications targeting thrips and tarnished plant bug and could be a valuable addition to an overall insect management program in cotton.

摘要

2016年和2017年在田纳西州进行了田间试验，以评估一种新型苏云金芽孢杆菌（Bt）转基因毒素Bt Cry51Aa2.834_16对棉花蓟马（缨翅目：蓟马科）和牧草盲蝽（Lygus lineolaris (Palisot De Beauvois)，半翅目：盲蝽科）的影响。具有Bt性状的棉花对蓟马伤害的防护效果与基于杀虫剂的方法相当或更好。使用Bt性状导致未成熟牧草盲蝽数量减少，尤其是大龄若虫数量减少，并对牧草盲蝽的伤害有部分防护作用。在不使用杀虫剂时，表达Bt Cry51Aa2.834_16的棉花产量高于非Bt同基因系。尽管Bt Cry51Aa2.834_16减少了杀虫剂的使用需求，但仍需要进行叶面喷施杀虫剂以提供对牧草盲蝽的充分植株保护。目前推荐的牧草盲蝽防治阈值对Bt Cry51Aa2.834_16和非Bt同基因系的效果相似。针对牧草盲蝽喷施杀虫剂可提高纤维品质，而Bt Cry51Aa2.834_16的影响较小。预计Bt转基因毒素Cry51Aa2.834_16将减少针对蓟马和牧草盲蝽的杀虫剂使用需求，并且可能成为棉花整体害虫管理计划的一项有价值补充。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/bb8887017439/toy25006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/9095feea2e32/toy25001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/d03ee4e119a7/toy25005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/bb8887017439/toy25006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/9095feea2e32/toy25001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/d5e60e7e4a3f/toy25002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/c0a7efcbe6f8/toy25003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8346/6294225/040dd8079651/toy25004.jpg
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