IPM Program, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
IPM Program, Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
Curr Opin Insect Sci. 2022 Apr;50:100894. doi: 10.1016/j.cois.2022.100894. Epub 2022 Mar 2.
Changes in climatic conditions affect pest populations and ultimately result in increased pest status and yield losses. While pesticide application is usually the first defensive tool used to control pest species that threaten crop production, genetically modified (GM) crops with insecticidal traits (Bt crops) are becoming more common. The indiscriminate and over use of insecticides, and absence of insect resistance management (IRM) strategies ultimately lead to evolution of resistance against these technologies. IRM faces significant challenges in the African context. In this paper we use examples of cotton, maize, cowpea and tomato pests to illustrate their potential to evolve resistance to insecticides and also highlight the importance of IRM strategies, both with regard to the use of pesticides and the cultivation of Bt cotton, Bt maize and Bt cowpea.
气候变化会影响害虫种群，最终导致害虫数量增加和产量损失。虽然通常会首先使用杀虫剂来控制威胁作物生产的害虫，但具有杀虫特性的转基因（GM）作物（Bt 作物）越来越常见。杀虫剂的滥用和过度使用，以及缺乏虫害抗性管理（IRM）策略，最终导致了这些技术的抗性进化。IRM 在非洲背景下面临重大挑战。在本文中，我们以棉花、玉米、豇豆和番茄害虫为例，说明它们对抗虫剂产生抗性的潜力，并强调了虫害抗性管理策略的重要性，这既涉及到杀虫剂的使用，也涉及到 Bt 棉花、Bt 玉米和 Bt 豇豆的种植。
