Isaac Kodzo Amegbor, Gloria Boakyewaa Adu, Charles Nelimor, Boddupalli M Prasanna, Yoseph Beyene, Walter Chivasa, James Gichuru Gethi, Abou Togola, Abdulai Jamal-Deen, Desmond Sunday Adogoba, Jerry Nboyine, Francis Kusi, Priscilla Francisco Ribeiro, Agbesi Kwadzo Keteku, Emmanuel Wandaat, Kwabena Darkwa, Benedicta Atosona, Maryke Labuschagne
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引用次数: 0
Abstract
Fall armyworm (Spodoptera frugiperda (J.E. Smith)) has become a significant pest to maize production, causing huge yield losses in sub-Saharan Africa. This study evaluated three non-Bt maize hybrids with tolerance to fall armyworm (FAW) along with a commercial hybrid check for yield and agronomic performance under natural FAW infestation and chemical control conditions in both on-station and on-farm trials. Significant differences were observed among the hybrids with the FAW tolerant hybrids showing reduced leaf and ear damage compared to the commercial hybrid. These hybrids also exhibited high grain yield performance, outyielding the commercial check by 197-252%. Mean grain yield under FAW infestation ranged from 6009.88 to 7117.30 kg ha-1 without chemical control, and even higher (8441.24 kg ha-1) under limited chemical control. Stepwise multiple regression analyses identified ear aspect, husk cover and ear damage as key traits accounting for 98% of the total variation in grain yield under FAW infestation. Participatory variety selection showed high farmer preference for these hybrids. The availability of these hybrids to farmers promises to enhance food security, reduce the environmental impact of insecticides, alleviate cost burdens on farmers, and increase household income.
Supplementary information: The online version contains supplementary material available at 10.1007/s12600-025-01253-y.
秋粘虫（Spodoptera frugiperda， J.E. Smith）已成为影响撒哈拉以南非洲玉米生产的重要害虫，造成了巨大的产量损失。本研究评估了3个对秋粘虫（FAW）具有抗性的非bt玉米杂交种，并在田间试验和田间试验中对秋粘虫自然侵染和化学防治条件下的产量和农艺性能进行了检验。与商业杂交品种相比，耐一汽杂交种的叶片和穗部损伤程度显著降低。这些杂交种也表现出较高的产量，产量比商业对照高出197-252%。未施化学药剂处理的平均产量为6009.88 ~ 7117.30 kg ha-1，施化学药剂处理的平均产量更高（8441.24 kg ha-1）。逐步多元回归分析发现，穗向、谷壳覆盖和穗损是主要性状，占FAW侵染下籽粒产量变化总量的98%。参与式品种选择表明，农民对这些杂交种有较高的偏好。向农民提供这些杂交品种有望加强粮食安全，减少杀虫剂对环境的影响，减轻农民的成本负担，并增加家庭收入。补充信息：在线版本包含补充资料，提供地址为10.1007/s12600-025-01253-y。
期刊介绍：
Phytoparasitica is an international journal on Plant Protection, that publishes original research contributions on the biological, chemical and molecular aspects of Entomology, Plant Pathology, Virology, Nematology, and Weed Sciences, which strives to improve scientific knowledge and technology for IPM, in forest and agroecosystems. Phytoparasitica emphasizes new insights into plant disease and pest etiology, epidemiology, host-parasite/pest biochemistry and cell biology, ecology and population biology, host genetics and resistance, disease vector biology, plant stress and biotic disorders, postharvest pathology and mycotoxins. Research can cover aspects related to the nature of plant diseases, pests and weeds, the causal agents, their spread, the losses they cause, crop loss assessment, and novel tactics and approaches for their management.
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