Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Department of Agronomy, Iowa State University, Ames, IA 50011, USA.
Genes (Basel). 2020 Sep 24;11(10):1117. doi: 10.3390/genes11101117.
Tomato ( L.) is the second most-consumed vegetable in the world. The market value and culinary purpose of tomato are often determined by fruit size and shape, which makes the genetic improvement of these traits a priority for tomato breeders. The main objective of the study was to detect quantitative trait loci (QTL) associated with the tomato fruit shape and size. The use of elite breeding materials in the genetic mapping studies will facilitate the detection of genetic loci of direct relevance to breeders. We performed QTL analysis in an intra-specific population of tomato developed from a cross between two elite breeding lines NC 30P × NC-22L-1(2008) consisting of 110 recombinant inbred lines (RIL). The precision software Tomato Analyzer (TA) was used to measure fruit morphology attributes associated with fruit shape and size traits. The RIL population was genotyped with the SolCAP 7720 SNP array. We identified novel QTL controlling elongated fruit shape on chromosome 10, explaining up to 24% of the phenotypic variance. This information will be useful in improving tomato fruit morphology traits.
番茄（L.）是世界上消费量第二大的蔬菜。番茄的市场价值和烹饪用途通常由果实大小和形状决定，这使得果实形状和大小等性状的遗传改良成为番茄育种者的首要任务。本研究的主要目的是检测与番茄果实形状和大小相关的数量性状位点（QTL）。在遗传图谱研究中使用优秀的育种材料将有助于检测与育种者直接相关的遗传位点。我们在由两个优秀的育种系 NC 30P × NC-22L-1(2008)杂交产生的自交系群体中进行了 QTL 分析，该群体由 110 个重组自交系（RIL）组成。使用番茄分析软件（TA）来测量与果实形状和大小性状相关的果实形态属性。利用 SolCAP 7720 SNP 阵列对 RIL 群体进行了基因型分析。我们鉴定出了控制第 10 号染色体上果实伸长形状的新 QTL，解释了高达 24%的表型变异。这些信息将有助于改善番茄果实形态性状。
