基因型、时间型和组织型对花生侵染番茄斑点病的影响

Y. Tseng, B. Tillman, D. Rowland, N. Dufault, J. Wang
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引用次数: 0

摘要

由番茄斑点枯萎病毒(TSWV)引起的斑点枯萎病是影响美国东南部花生生产的主要病害之一。种植者采用综合病害管理来控制斑枯病;然而,品种的抗病性是控制该病害的最重要因素。本研究评估了基因型、时间型和组织型对4个花生品种TSWV发病率的影响。在生长季节的5个时间点采集了4个花生品种(Florida-EPTM ' 113 '、Florida-07、Georgia Green和Georgia Valencia)的叶片、根冠、老叶和幼叶4种不同类型的组织。采用免疫测定法检测病毒的存在。在生长季节,TSWV感染的发病率随着时间的推移而增加。根冠组织的感染率高于其他类型的组织。佛罗里达州- eptm ' 113 '感染发生率最低。与Florida-EPTM ' 113 '相比,Florida-07感染TSWV的可能性高出7倍,而Georgia Green和Georgia Valencia的可能性更高,分别高出18倍和21倍。佛罗里达- eptm ' 113显著降低了TSWV感染,可能是由于病毒在整个植物中的传播速度减慢。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Genotypic, Temporal, and Tissue-type Effects on the Incidence of Tomato spotted wilt virus in Peanut (Arachis hypogaea L.)
Spotted wilt, caused by Tomato spotted wilt virus (TSWV), is one of the major diseases affecting peanut production in the southeastern United States. Growers use integrated disease management to control spotted wilt; however, disease resistance of a cultivar is the most important factor for managing this disease. This research evaluated genotypic, temporal, and tissue-type effects on the incidence of TSWV on each of four peanut cultivars. Four different types of tissues (leaf, root crown, old leaf and young leaf) were collected from each of four peanut cultivars (Florida-EPTM ‘113’, Florida-07, Georgia Green and Georgia Valencia) at five time points during the growing season. Immunoassays were conducted to detect viral presence. The incidence of TSWV infection increased over time during the growing season. Root crown tissue had higher infection than other types of tissue. Florida-EPTM ‘113’ had the lowest infection incidence. Compared to Florida-EPTM ‘113’, Florida-07 was seven times more likely to be infected by TSWV, while Georgia Green and Georgia Valencia possessed even higher probability, 18 times and 21 times higher, respectively. Florida-EPTM ‘113’ had significantly reduced TSWV infection likely due to slowing movement of the virus throughout the plant.
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