Acharya Nirmala, Kumar Manish, Bag Sudeep, Cloud Cale, Torrance Ty, Simmons Alvin M, Kumari Manisha, Romero Emilio Suarez, McAvoy Theodore
University of Georgia - Tifton Campus, Horticulture, Tifton, Georgia, United States;
University of Georgia - Tifton Campus, Plant Pathology, Crop Virology Laboratory, Division of Plant Pathology, University of Georgia, College of Agricultural & Environmental Sciences, Tifton, Georgia, United States, 31793;
Plant Dis. 2025 Aug 26. doi: 10.1094/PDIS-03-25-0469-RE.
The severity of tomato yellow leaf curl disease (TYLCD) caused by tomato yellow leaf curl virus (TYLCV) in commercially grown tomato cultivars has been increasingly exacerbated in recent years in the southeastern United States. Four research trials were conducted over two consecutive fall seasons in the years 2022 and 2023 to assess the performance of tomato (Solanum lycopersicum L.) cultivars introgressed with single (Ty-1) or combinations of (Ty-3 and Ty-6) resistance gene(s) in Georgia, USA. In 2022, studies were conducted on a commercial farm in Colquitt County and a research farm in Tift County. In 2023, experiments were performed on a commercial farm in Grady County and a Tift County research farm. Tomato cultivars (cv.) with an intermediate resistance to tomato yellow leaf curl virus (TYLCV-IR), including Camaro, Grand Marshall, Jolene, Red Snapper, STM 2255, and Varsity, were compared to the TYLCV-susceptible (TYLCV-s) cv. Myrtle. This study evaluates the total produced yield of tomato cv. under natural disease incidence, severity, relative maturity and marketable yield. Our findings suggest TYLCV-IR cv. STM 2255, Jolene and Grand Marshall, except Red Snapper, had a lower virus incidence compared to cv. Myrtle. Moreover, cv. Red Snapper, Varsity and Camaro exhibited moderate disease progression in our research plots. The cultivars Grand Marshall and Jolene had significantly lower TYLCD severity than Myrtle. Furthermore, fruit yields per plant were highest for Camaro, Grand Marshall, Jolene, and STM 2255. Overall, Camaro, Grand Marshall, Jolene, and STM 2255 performed the best based on moderate-to-low TYLCD incidence and severity, and superior yield among the evaluated tomato cultivars. Therefore, identifying the most resistant/tolerant and environmentally suitable cultivars is needed to mitigate the viral disease in tomatoes.
近年来，在美国东南部，由番茄黄化曲叶病毒（TYLCV）引起的番茄黄化曲叶病（TYLCD）在商业化种植的番茄品种中的严重程度日益加剧。在2022年和2023年连续两个秋季进行了四项研究试验，以评估在美国佐治亚州导入了单一抗性基因（Ty-1）或组合抗性基因（Ty-3和Ty-6）的番茄（Solanum lycopersicum L.）品种的表现。2022年，在科尔奎特县的一个商业农场和蒂夫特县的一个研究农场进行了研究。2023年，在格雷迪县的一个商业农场和蒂夫特县的一个研究农场进行了试验。将对番茄黄化曲叶病毒具有中等抗性（TYLCV-IR）的番茄品种，包括卡马罗、大元帅、乔琳、红鲷鱼、STM 2255和大学队，与对TYLCV敏感（TYLCV-s）的品种默特尔进行了比较。本研究评估了在自然病害发生率、严重程度、相对成熟度和适销产量下番茄品种的总产量。我们的研究结果表明，与默特尔品种相比，除红鲷鱼外，TYLCV-IR品种STM 2255、乔琳和大元帅的病毒发生率较低。此外，红鲷鱼、大学队和卡马罗品种在我们的研究地块中表现出中等程度的病害进展。大元帅和乔琳品种的TYLCD严重程度明显低于默特尔。此外，卡马罗、大元帅、乔琳和STM 2255的单株果实产量最高。总体而言，基于中等至低的TYLCD发生率和严重程度以及在所评估的番茄品种中优异的产量，卡马罗、大元帅、乔琳和STM 2255表现最佳。因此，需要确定最抗病/耐病且适合环境的品种，以减轻番茄中的病毒病害。
