中国瓜菜2026，Vol.39Issue(5)：32-37,6.DOI:10.16861/j.cnki.zggc.2026.0040
西瓜雄花两性花同株性状的遗传分析及基因定位
Genetic analysis and gene mapping of andromonoecious trait in water-melon
摘要
Abstract
Cucurbitaceae crops,which exhibit all seven sexual types found in angiosperms,have become ideal model or-ganism for investigating the mechanisms of plant sex determination.The primary sexual type in watermelon is monoe-ciousr,while certain germplasm lines exhibit the andromonoecious sexual type,wherein both male and hermaphroditic flowers are produced simultaneously on the same watermelon plant.To investigate the sex determination mechanism in watermelon,the andromonoecious germplasm WM254 and normal monoecious germplasm WT2 were used as experimen-tal materials.By constructing an F2 segregating population,it was discovered that the andromonoecious trait in watermel-on is controlled by a recessive single gene.Through a combination of BSA-seq sequencing and linkage analysis within the F2 population,the gene responsible for the andromonoecious trait in watermelon was preliminarily localized to a re-gion between 29.45 Mb and 29.58 Mb on chromosome 3.This interval contains 14 candidate genes,several of which are potentially related to sexual differentiation.Based on this candidate region,a molecular marker tightly linked to the andro-monoecious trait in watermelon was developed.The findings of this study lay a foundation for further fine mapping of the gene regulating andromonoecy in watermelon and subsequent functional validation,while also providing a reference for research on sex type differentiation in Cucurbitaceae species.关键词
西瓜/两性花/基因定位/分子标记Key words
Watermelon/Andromonoecious/Gene mapping/Molecular marker分类
农业科技引用本文复制引用
张来生,杨路明,豆峻岭,薛晓航,刘飞亚,王玺凯,杨森,刘东明,闫文凯,牛欢欢,朱华玉..西瓜雄花两性花同株性状的遗传分析及基因定位[J].中国瓜菜,2026,39(5):32-37,6.基金项目
国家自然科学基金(32172602,32172574,32102389) （32172602,32172574,32102389）
河南省农业良种联合攻关(2022010503) （2022010503）
河南省重大科技专项(221100110400) （221100110400）
河南省科技攻关计划(242102111124,242102111115) （242102111124,242102111115）
