Related Experiment Video
Updated: Apr 1, 2026
Improved UPLC-UV Method for the Quantification of Vitamin C in Lettuce Varieties Lactuca sativa L. and Crop Wild Relatives Lactuca spp.
Published on: June 30, 2020
A major quantitative trait locus conferring subgynoecy in cucumber.
Fengjiao Bu1, Huiming Chen2, Qiuxiang Shi1
1Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of Ministry of Agriculture, Sino-Dutch Joint Lab of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Researchers identified a major quantitative trait locus (QTL) for femaleness in cucumber using advanced sequencing. This discovery aids in understanding cucumber sex determination and developing higher-yielding varieties.
Area of Science:
- Plant genetics
- Molecular biology
- Agricultural science
Background:
- Cucumber (Cucumis sativus L.) is a model organism for studying plant sex determination.
- Yield in cucumber is closely linked to the degree of femaleness.
- The genetic underpinnings of subgynoecy, a highly female sex form, are not well understood.
Purpose of the Study:
- To identify the genetic basis of subgynoecy in cucumber.
- To pinpoint major quantitative trait loci (QTLs) associated with high femaleness.
- To provide insights for developing improved cucumber cultivars.
Main Methods:
- Genetic analysis of F2 and BC1 populations from a cross between subgynoecious and monoecious cucumber lines.
- Application of simple sequence repeat (SSR) markers and next-generation sequencing (NGS).
- Genome-wide single nucleotide polymorphism (SNP) profiling and bulked segregant analysis (BSA).
Main Results:
- Subgynoecy in cucumber exhibits a quantitative inheritance pattern.
- Three QTLs (sg3.1, sg6.1, sg6.2) were identified, with sg3.1 being the major locus.
- The major QTL sg3.1 explained 54.6% of the phenotypic variation and was delimited to a 799 kb region.
Conclusions:
- A major QTL (sg3.1) conditioning high femaleness in cucumber was successfully identified.
- This research elucidates the genetic basis of subgynoecy.
- Findings will facilitate the development of elite cucumber cultivars with enhanced yield potential.
More Related Videos
09:32An Array-based Comparative Genomic Hybridization Platform for Efficient Detection of Copy Number Variations in Fast Neutron-induced Medicago truncatula Mutants
Published on: November 8, 2017
15:25Tomato Analyzer: A Useful Software Application to Collect Accurate and Detailed Morphological and Colorimetric Data from Two-dimensional Objects
Published on: March 16, 2010