Human sensory analysis is the most appropriate method for assessing the flavour of fresh market tomatoes, but it is very labour and time consuming. Therefore, sensory attributes are often neglected in early generations of breeding programmes and genetic studies, although there is a demand for tomatoes with improved flavour. In this study, the recently developed Breeders' Sensory Test was applied to an F2 mapping population derived from two parents with superior flavour. Sensory attributes, physicochemical measurements, volatiles and fruit weight were assessed in organic low‐input and hydroponic cultivation. A linkage map spanning 1070 cM was developed. In total, 71 quantitative trait loci (QTL) were detected for the means of both cultivation systems, 61 for organic and 46 for hydroponic cultivation. A proportion of 27% of the loci were co‐localized between both cultivation systems. Nine distinct QTL clusters for flavour‐related traits were identified, including a large cluster on chromosome 6 comprising five sensory and nine volatile QTL. The sensory QTL on chromosomes 2, 5, 6, 10 and 11, partly within clusters, are recommended for marker‐assisted selection.

中文翻译：

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新鲜市场番茄（Solanum lycopersicum）早期世代的风味改良：I. 感官属性、理化测量和挥发性化合物的 QTL 鉴定

人类感官分析是评估新鲜市场番茄风味的最合适方法，但非常费力费时。因此，尽管人们对风味改良的番茄有需求，但在早期育种计划和遗传研究中，感官属性常常被忽视。在这项研究中，最近开发的育种者感官测试应用于 F2绘制来自两个具有卓越风味的父母的人口。在有机低投入和水培栽培中评估了感官属性、理化测量、挥发物和果实重量。开发了跨越 1070 cM 的连锁图谱。两种栽培系统总共检测到 71 个数量性状位点 (QTL)，其中有机栽培系统 61 个，水耕栽培系统 46 个。 27% 的基因座在两个栽培系统之间共定位。鉴定出九个与风味相关性状不同的 QTL 簇，其中包括 6 号染色体上的一个大簇，其中包含 5 个感官 QTL 和 9 个挥发性 QTL。 2、5、6、10 和 11 号染色体上的感觉 QTL（部分位于簇内）建议用于标记辅助选择。