Fine Mapping of fw6.3, a Major-Effect Quantitative Trait Locus That Controls Fruit Weight in Tomato

文献类型： 外文期刊

第一作者： Ning, Yu

作者： Ning, Yu;Wei, Kai;Li, Shanshan;Zhang, Li;Chen, Ziyue;Lu, Feifei;Yang, Pei;Yang, Mengxia;Liu, Xiaolin;Liu, Xiaoyan;Wang, Xiaotian;Cao, Xue;Wang, Xiaoxuan;Guo, Yanmei;Liu, Lei;Li, Xin;Du, Yongchen;Li, Junming;Huang, Zejun

作者机构：

关键词： tomato; fruit weight; fw6.3; fine mapping; soluble solids content; overdominance

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 11 期

页码：

收录情况： SCI

摘要： Tomato (Solanum lycopersicum) is a widely consumed vegetable, and the tomato fruit weight is a key yield component. Many quantitative trait loci (QTLs) controlling tomato fruit weight have been identified, and six of them have been fine-mapped and cloned. Here, four loci controlling tomato fruit weight were identified in an F-2 population through QTL seq.; fruit weight 6.3 (fw6.3) was a major-effect QTL and its percentage of variation explanation (R-2) was 0.118. This QTL was fine-mapped to a 62.6 kb interval on chromosome 6. According to the annotated tomato genome (version SL4.0, annotation ITAG4.0), this interval contained seven genes, including Solyc06g074350 (the SELF-PRUNING gene), which was likely the candidate gene underlying variation in fruit weight. The SELF-PRUNING gene contained a single-nucleotide polymorphism that resulted in an amino acid substitution in the protein sequence. The large-fruit allele of fw6.3 (fw6.3(HG)) was overdominant to the small-fruit allele fw6.3(RG). The soluble solids content was also increased by fw6.3(HG). These findings provide valuable information that will aid the cloning of the FW6.3 gene and ongoing efforts to breed tomato plants with higher yield and quality via molecular marker-assisted selection.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序