园艺学报2025，Vol.52Issue(12)：3219-3228,10.DOI:10.16420/j.issn.0513-353x.2025-0124
番茄果实耐穿刺力的基因定位
Mapping of Genes Regulating Tomato Fruit Skin Toughness
摘要
Abstract
Fruit firmness is an important quality trait that directly affects the fruit cracking and storability.Skin toughness and compression resistance are key indicators for evaluating fruit firmness.In this study,we found that although processing tomato TS292 and large-fruited tomato TS12 showed no significant difference in compression resistance.However,TS292 fruits exhibited significantly enhanced skin toughness.Histological and metabolomic analyses demonstrated that TS292 possesses a thicker cuticle layer with elevated cutin and wax content in the red fruit pericarp,potentially constituting the primary determinant of its superior skin toughness.To clone key genes regulating fruit skin toughness,we established a recombinant inbred line(RIL)population derived from TS12×TS292 crosses as a mapping population.Four QTLs control the skin toughness were identified by using Bulked Segregant Analysis(BSA)method.Among these,a major QTL located at the chromosome 7,contributed 30.12%variation of fruit skin toughness.Further genetic analysis narrowed the QTL-FIS3 into a 295 kb region including 16 genes.关键词
番茄/果实硬度/耐穿刺力/角质/蜡质Key words
tomato/fruit firmness/skin toughness/cutin/wax分类
农业科技引用本文复制引用
亓钰洁,赵世祺,孙帅,王海敬,崔霞,李仁..番茄果实耐穿刺力的基因定位[J].园艺学报,2025,52(12):3219-3228,10.基金项目
国家自然科学基金项目(32272729,32120103010) （32272729,32120103010）
