International Maize and Wheat Improvement Center (CIMMYT), ICRAF Campus, UN Avenue, P.O. Box 1041, GigiriNairobi, 00621, Kenya.
Bayer Pakistan (Private) Ltd, Karachi, Pakistan.
Theor Appl Genet. 2022 Nov;135(11):3897-3916. doi: 10.1007/s00122-022-04073-4. Epub 2022 Mar 23.
Sustainable control of fall armyworm (FAW) requires implementation of effective integrated pest management (IPM) strategies, with host plant resistance as a key component. Significant opportunities exist for developing and deploying elite maize cultivars with native genetic resistance and/or transgenic resistance for FAW control in both Africa and Asia. The fall armyworm [Spodoptera frugiperda (J.E. Smith); FAW] has emerged as a serious pest since 2016 in Africa, and since 2018 in Asia, affecting the food security and livelihoods of millions of smallholder farmers, especially those growing maize. Sustainable control of FAW requires implementation of integrated pest management strategies, in which host plant resistance is one of the key components. Significant strides have been made in breeding elite maize lines and hybrids with native genetic resistance to FAW in Africa, based on the strong foundation of insect-resistant tropical germplasm developed at the International Maize and Wheat Improvement Center, Mexico. These efforts are further intensified to develop and deploy elite maize cultivars with native FAW tolerance/resistance and farmer-preferred traits suitable for diverse agro-ecologies in Africa and Asia. Independently, genetically modified Bt maize with resistance to FAW is already commercialized in South Africa, and in a few countries in Asia (Philippines and Vietnam), while efforts are being made to commercialize Bt maize events in additional countries in both Africa and Asia. In countries where Bt maize is commercialized, it is important to implement a robust insect resistance management strategy. Combinations of native genetic resistance and Bt maize also need to be explored as a path to more effective and sustainable host plant resistance options. We also highlight the critical gaps and priorities for host plant resistance research and development in maize, particularly in the context of sustainable FAW management in Africa and Asia.
可持续控制草地贪夜蛾（FAW）需要实施有效的病虫害综合管理（IPM）策略，而寄主植物抗性是关键组成部分。在非洲和亚洲，开发和部署具有本土遗传抗性和/或抗 FAW 的转基因的优秀玉米品种，为控制 FAW 提供了重大机会。自 2016 年以来，草地贪夜蛾[Spodoptera frugiperda（J.E. Smith）；FAW]已成为非洲的一种严重害虫，自 2018 年以来已成为亚洲的一种严重害虫，影响了数以百万计的小农的粮食安全和生计，尤其是种植玉米的小农。可持续控制 FAW 需要实施病虫害综合管理策略，其中寄主植物抗性是关键组成部分之一。基于墨西哥国际玉米小麦改良中心开发的抗虫热带种质资源，非洲在培育具有本土遗传抗性的优秀玉米品系和杂交种方面取得了重大进展。这些努力进一步加强，以开发和部署具有本土 FAW 耐受性/抗性和适合非洲和亚洲不同农业生态系统的农民首选特性的优秀玉米品种。独立地，具有抗 FAW 能力的转基因 Bt 玉米已经在南非和亚洲的几个国家（菲律宾和越南）商业化，同时正在努力在非洲和亚洲的其他几个国家商业化 Bt 玉米事件。在商业化 Bt 玉米的国家，实施强有力的昆虫抗性管理策略非常重要。还需要探索本土遗传抗性和 Bt 玉米的组合，作为更有效和可持续的寄主植物抗性选择的途径。我们还强调了玉米寄主植物抗性研究和开发的关键差距和优先事项，特别是在非洲和亚洲可持续 FAW 管理的背景下。
