Han Xue, Lei Jiahui, Zhang Yuhan, Jia Yulong, Wang Xiaoyun, Liu Jian, Tian Zhenqi
Key Laboratory of Crop Pests in Northern Cold Regions of Heilongjiang Province, College of Plant Protection, Northeast Agricultural University, Harbin 150030, China.
J Econ Entomol. 2024 Dec 28;117(6):2658-2668. doi: 10.1093/jee/toae210.
Foxglove aphid, Aulacorthum solani Kaltenbach (Hemiptera: Aphididae), is a major pest worldwide. It can infest various crops, including soybean, and reduce yields. The use of insect-resistant cultivars can effectively manage pests. Dowling is a soybean cultivar that can control Aphis glycines through antibiosis and antixenosis. In this study, we investigated the feeding behavior of A. solani using electropenetrography (EPG), and its life-history traits using an age-stage, two-sex life table, and its settling preferences on Dowling (resistant) and Heinong 51 (HN51, susceptible) soybean cultivars. The Dowling cultivar showed strong antibiosis against A. solani. Aphids feeding on Dowling exhibited significantly reduced survival, fecundity, and longevity, and increased nymph duration. Moreover, Dowling had negative impacts on the demographic parameters of the aphids. The number of A. solani individuals was significantly less on Dowling than on HN51, indicating the antixenotic effects of Dowling. As shown using EPG, the mechanical blocking wave (F) of A. solani was significantly longer after feeding on Dowling than after feeding on HN51, indicating that Dowling has a higher mechanical resistance. In conclusion, Dowling exhibited strong resistance to A. solani. These results are beneficial for integrated pest management in soybean fields and breeding programs.
茄无网蚜，Aulacorthum solani Kaltenbach（半翅目：蚜科），是一种世界性的主要害虫。它能侵害包括大豆在内的多种作物，并导致产量下降。使用抗虫品种能够有效防治害虫。道林是一个能通过抗生性和抗生性拒避作用来控制大豆蚜的大豆品种。在本研究中，我们使用刺吸电位技术（EPG）研究了茄无网蚜的取食行为，使用年龄 - 龄期两性生命表研究了其生活史特征，并研究了其在道林（抗性）和黑农51（HN51，感虫）大豆品种上的定居偏好。道林品种对茄无网蚜表现出强烈的抗生性。取食道林的蚜虫在存活率、繁殖力和寿命方面显著降低，若虫期延长。此外，道林对蚜虫的种群参数有负面影响。茄无网蚜在道林上的个体数量显著少于在HN51上的，这表明道林具有抗生性拒避作用。如EPG所示，茄无网蚜取食道林后的机械阻塞波（F）显著长于取食HN51后的，这表明道林具有更高的机械抗性。总之，道林对茄无网蚜表现出强烈抗性。这些结果对大豆田害虫综合防治和育种计划有益。
