The sweetpotato whitefly, Bemisia tabaci Gennadius Middle East-Asia Minor 1 (MEAM1), is a major insect pest on vegetables worldwide. Enormous economic losses result from whitefly damage. The application of chemical insecticides is commonly used by vegetable growers to control MEAM1. However, this pest has developed considerable resistance to most insecticides. Therefore, alternative plant protection strategies are required, such as using host plant resistance. In this study, 24 local and commercially available cultivars of snap bean (Phaseolus vulgaris L.) in the southern United States were determined for their susceptibility to MEAM1 during three seasons (2020 fall, 2021 spring, and 2021 fall). In each season, the number of MEAM1 adults, eggs, and nymphs was assessed weekly for 6 weeks, and snap bean yield was evaluated at the end. During the 2020 fall, the number of adults per leaf was highest on Week 1 (22 adults/leaf) but was not significantly different among the cultivars. The least number of eggs/leaf disk was observed on the ‘Jade’ cultivar. Cultivars ‘Gold Mine’, ‘Golden Rod’, ‘Long Tendergreen’, and ‘Royal Burgundy’ supported a significantly lower number of nymphs/leaf disk. Overall, the number of eggs and nymphs was highest on Week 2 and Week 4, respectively. Snap bean yield was significantly higher on cultivars ‘Affirmed’, ‘Momentum’, ‘PV-857’, ‘Sybaris’, and ‘Tema’. In the spring and fall of 2021, temperature and relative humidity were positively correlated with whitefly infestations. These results provided valuable information for whitefly management on snap beans based on host plant resistance and yield.

甘薯粉虱Bemisia tabaci Gennadius Middle East-Asia Minor 1 (MEAM1) 是全球蔬菜的主要害虫。粉虱危害造成巨大的经济损失。蔬菜种植者通常使用化学杀虫剂来控制 MEAM1。然而，这种害虫已经对大多数杀虫剂产生了相当大的抗药性。因此，需要替代植物保护策略，例如使用寄主植物抗性。在这项研究中，24 个本地和市售的脆豆（Phaseolus vulgarisL.) 在美国南部确定了三个季节（2020 年秋季、2021 年春季和 2021 年秋季）对 MEAM1 的易感性。在每个季节，每周评估 MEAM1 成虫、卵和若虫的数量，持续 6 周，最后评估脆豆产量。在 2020 年秋季，第 1 周每片叶子的成虫数量最高（每片叶子 22 个成虫），但品种之间没有显着差异。在'玉'品种上观察到的卵/叶盘数量最少。栽培品种“金矿”、“金棒”、“长嫩绿”和“皇家勃艮第”支持的若虫/叶盘数量显着减少。总体而言，卵和若虫的数量分别在第 2 周和第 4 周最高。'Affirmed'、'Momentum'、'PV-857'、'Sybaris'和'Tema'品种的脆豆产量显着更高。2021年春秋两季，气温和相对湿度与粉虱侵染呈正相关。这些结果为基于寄主植物抗性和产量的脆豆粉虱管理提供了有价值的信息。