Fine Genetic Mapping of Dwarf Trait in Cucumber (Cucumis sativus L.) Using a RIL Population

• Published in: 东北农业大学学报（英文版） Vol. 27; no. 3; pp. 28 - 35
• Main Authors: Qin Zhi-Wei, Yang Jing, Zhou Xiu-Yan, Wang Lei, Xin Ming
• Format: Journal Article
• Language: English
• Published: Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northeast Region), Ministry of Agriculture, Northeast Agricultural University, Harbin 150030, China%College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China 2020
• Subjects: recombinant inbred line (RIL); dwarf; quantitative trait locus (QTL); cucumber (Cucumis sativus L.)
• ISSN: 1006-8104

S565.1; Plant height in cucumber is not only an important trait for breeding, but also one of the model traits suitable for the study of developmental biology. Amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers techniques were applied for the construction of genetic linkage maps in cucumber. To understand the dwarf trait genetic basis in cucumber, the quantitative trait loci (QTL) were identified using F6 recombinant inbred line populations (RILs) comprising 336 lines from the cross between the two cultivars D0462 (the dwarf) and DN129 (the vine). In total, six SSR markers and 15 AFLP markers were detected on the five linkage groups covering 152.8 cM with a mean marker interval of 7.28 cM. Only one QTL was found to be linked with plant height and the dwarf trait locus remained in the fourth linkage group. The contributory percentage of the single QTL to plant height was 11.39％.