Selection of Tomato (Solanum lycopersicum) Hybrids Resistant to Fol, TYLCV, and TSWV with Early Maturity and Good Fruit Quality

IF 3.1 3区 农林科学 Q1 HORTICULTURE
Richecarde Lafrance, Claudia Villicaña, J. B. Valdéz-Torres, R. S. García-Estrada, Manuel Alonzo Báez Sañudo, M. Esparza-Araiza, J. León‐Félix
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Abstract

Tomato (Solanum lycopersicum L.) is widely grown in the tropics, where its production is subjected to heavy disease losses. A goal of tomato breeders is genetic improvement of early maturity genotypes with higher fruit quality under challenging environmental conditions, such as the presence of multiple pathogens, is the goal of tomato breeders. In Mexico, tomato is one of the main exported vegetables, grown in most of the northwestern states of the country, with the state of Sinaloa as one of the largest producers. In this study, we evaluated fruit quality parameters in 16 tomato hybrids (14 hybrids under development in Sinaloa and 2 as commercial lines), which were previously analyzed with molecular markers to detect gene resistance. The hybrids were harvested at the “red ripe” stage at three different harvest dates. Total soluble solids (TSS), titratable acidity, pH, color, firmness, and the TSS/acidity ratio were evaluated. Of the 16 hybrids analyzed, 2 showed the presence of genes for resistance to TYLCV, 7 for resistance to TSWV and Fol race 3, 15 for resistance to Fol race 2, and all 16 for resistance to Fol race l. Results show that most of the tomato hybrids analyzed during the three harvest dates met market standards reported in the USDA’s fresh tomato import regulations and Mexico Supreme Quality 2005 (MCS Mexico Calidad Suprema for its acronym in Spanish). However, two of the advanced developmental hybrids better met the market requirements and are also maturing early.
选育抗 Fol、TYLCV 和 TSWV、早熟且果实品质优良的番茄(Solanum lycopersicum)杂交种
番茄(Solanum lycopersicum L.)广泛种植于热带地区,其生产遭受了严重的病害损失。番茄育种人员的一个目标是在多种病原体存在等具有挑战性的环境条件下,遗传改良出果实品质更高的早熟基因型。在墨西哥,番茄是主要的出口蔬菜之一,在该国西北部的大部分州都有种植,锡那罗亚州是最大的生产地之一。在这项研究中,我们评估了 16 个番茄杂交种(14 个在锡那罗亚州开发中的杂交种和 2 个商业品系)的果实品质参数,这些杂交种之前曾用分子标记进行过分析,以检测基因抗性。这些杂交种在三个不同的收获期的 "红熟 "阶段收获。对总可溶性固形物(TSS)、可滴定酸度、pH 值、色泽、紧实度和 TSS/酸度比进行了评估。在分析的 16 个杂交种中,2 个杂交种含有抗 TYLCV 的基因,7 个杂交种含有抗 TSWV 和 Fol race 3 的基因,15 个杂交种含有抗 Fol race 2 的基因,所有 16 个杂交种都含有抗 Fol race l 的基因。结果表明,在三个收获期分析的大多数番茄杂交种都符合美国农业部新鲜番茄进口法规和 2005 年墨西哥最高质量标准(MCS Mexico Calidad Suprema,西班牙语缩写)中规定的市场标准。不过,有两个先进的发展型杂交种更符合市场要求,而且也早熟。
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来源期刊
Horticulturae
Horticulturae HORTICULTURE-
CiteScore
3.50
自引率
19.40%
发文量
998
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