首页> 美国卫生研究院文献>other >Effects of transgenic Bacillus thuringiensis cottonon insecticide use heliothine counts plant damage and cotton yield: Ameta-analysis 1996-2015
【2h】

Effects of transgenic Bacillus thuringiensis cottonon insecticide use heliothine counts plant damage and cotton yield: Ameta-analysis 1996-2015

机译:苏云金芽胞杆菌转基因棉花的效应关于杀虫剂的使用硫氨酸的含量植物的损害和棉花的产量:荟萃分析1996-2015

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

The primary management tactic for lepidopteran pests of cotton in the United States of America (USA) is the use of transgenic cotton that produces Bacillus thuringiensis Berliner (Bt) toxins. The primary target pests of this technology are Helicoverpa zea (Boddie) and Heliothis virescens (F.) in the eastern and central Cotton Belt of the USA. Concerns over the evolution of resistance in H. zea to Bt toxins and scrutiny of the necessity of Bt crops has escalated. We reviewed published and unpublished data from field trials of Bt cotton in the eastern and central Cotton Belt of the USA through 2015 to evaluate the effectiveness of Bt cotton (Bollgard, Bollgard II, WideStrike, WideStrike 3, and TwinLink). Bt cotton reduced insecticide usage, reduced heliothine pest numbers and damage, and provided a yield benefit, but Bollgard II and WideStrike efficacy declined in the Midsouth over the period evaluated. In the Southeastern region, heliothine damage remained constant through 2015, but yield benefits declined from 2010 until 2015. Resistance of H.zea to several Bt toxins is the mostplausible explanation for the observed changes in Bt cottonefficacy. The introduction of new Bt toxins such as found inWidestrike 3 and Twinlink may preserve the benefits of Btcrops. However, while both Widestrike 3 and Twinlink had less damage thanWidestrike, damage levels of both were similar to Bollgard II.
机译:美利坚合众国(美国)棉花的鳞翅目害虫的主要管理策略是使用产生苏云金芽胞杆菌柏林毒素(Bt)的毒素的转基因棉花。该技术的主要目标害虫是位于美国东部和中部棉带的Helicoverpa zea(Boddie)和Heliothis virescens(F.)。对玉米H. zea对Bt毒素抗性的进化以及对Bt作物的必要性进行审查的担忧已经升级。我们回顾了截至2015年在美国东部和中部棉带的Bt棉田间试验的已发表和未发表的数据,以评估Bt棉(Bollgard,Bollgard II,WideStrike,WideStrike 3和TwinLink)的有效性。转基因棉花减少了杀虫剂的使用,减少了硫氨酸的虫害数量和损害,并提供了增产效益,但在评估期间,中南部地区的Bollgard II和WideStrike功效下降。在东南地区,海硫氨酸的破坏在2015年之前一直保持不变,但从2010年到2015年产量收益下降。玉米对几种Bt毒素的危害最大观察到的Bt棉变化的合理解释功效。引入新的Bt毒素,例如Widestrike 3和Twinlink可能保留 Bt 的好处庄稼。但是,尽管Widestrike 3和Twinlink的伤害都小于广泛打击,两者的伤害等级都类似于Bollgard II。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号