ABSTRACT The whitefly (Bemisia tabaci Gennadius) transmitted Tomato yellow leaf curl virus (TYLCV) disease is a limiting factor in tomato production. Breeding resistance into tomatoes is one of the options to manage the disease. Among various screening techniques available for TYLCV, whitefly mediated individual plant inoculation technique is the most reliable one. Till date, six independently inherited major resistance genes and few Quantitative Trait Loci (QTLs) have been mapped in wild tomato species including S. chilense (Ty-1, Ty-3, Ty-4 and Ty-6), S. habrochaites syn. L. hirsutum (Ty-2), and S. peruvianum (ty-5). Ty-1 and Ty-2 genes express complete or nearly complete dominance, while Ty-3 shows partial dominance. These three genes have been extensively used in resistance breeding programs to combat both the monopartite and the bipartite begomoviruses. Since the Ty-genes in general exhibit partial or incomplete dominance, single gene F1 hybrids are less effective than the pure lines homozygous for the resistance gene. Therefore, for hybrids to be effective either both the parents should be resistant or they involve multiple resistance genes. In this review, we have compiled up-to-date information on TYLCV occurrence and pathogen variability, allele mining, genetic mapping and cultivar development; and visualised future prospects of TYLCV resistance breeding in tomato.

中文翻译：

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番茄黄叶卷曲病毒病及其抗性育种防治：综述

摘要 粉虱（Bemisia tabaci Gennadius）传播的番茄黄叶卷曲病毒（TYLCV）病是番茄生产的一个限制因素。在西红柿中培育抗性是控制该病害的选择之一。在 TYLCV 可用的各种筛选技术中，粉虱介导的单株接种技术是最可靠的一种。迄今为止，六个独立遗传的主要抗性基因和少量数量性状位点 (QTL) 已在野生番茄物种中进行定位，包括 S. chilense (Ty-1、Ty-3、Ty-4 和 Ty-6)、S. habrochaites syn . L. hirsutum (Ty-2) 和 S. peruvianum (ty-5)。Ty-1 和 Ty-2 基因表达完全或接近完全优势，而 Ty-3 显示部分优势。这三个基因已广泛用于抗性育种计划，以对抗单分和双分贝戈莫病毒。由于 Ty 基因通常表现出部分或不完全的优势，单基因 F1 杂种不如抗性基因纯合的纯系有效。因此，要使杂种有效，要么父母双方都具有抗性，要么涉及多个抗性基因。在这篇综述中，我们汇编了有关 TYLCV 发生和病原体变异、等位基因挖掘、遗传作图和品种开发的最新信息；并对番茄TYLCV抗性育种的未来前景进行了可视化。为了使杂种有效，要么父母双方都具有抗性，要么涉及多个抗性基因。在这篇综述中，我们汇编了有关 TYLCV 发生和病原体变异、等位基因挖掘、遗传作图和品种开发的最新信息；并对番茄TYLCV抗性育种的未来前景进行了可视化。为了使杂种有效，要么父母双方都具有抗性，要么涉及多个抗性基因。在这篇综述中，我们汇编了有关 TYLCV 发生和病原体变异、等位基因挖掘、遗传作图和品种开发的最新信息；并对番茄TYLCV抗性育种的未来前景进行了可视化。