浙江农业学报 ›› 2026, Vol. 38 ›› Issue (3): 609-620.DOI: 10.3969/j.issn.1004-1524.20250224

• 综述 • 上一篇    

果树遗传图谱构建与果实主要品质性状QTL定位研究进展

杜辰飞1,2(), 李文珏1,2, 魏春艳2, 蔡丹英2, 王月志2, 施泽彬2, 戴美松2,*(), 高永彬1,*()   

  1. 1. 浙江农林大学 园艺科学学院, 浙江 杭州 311300
    2. 浙江省农业科学院 园艺研究所, 浙江 杭州 310021
  • 收稿日期:2025-03-19 出版日期:2026-03-25 发布日期:2026-04-17
  • 作者简介:戴美松,E-mail:daims@zaas.ac.cn
    *高永彬,E-mail:gaoybin@zafu.edu.cn;
    杜辰飞,研究方向为梨育种和品质形成机理。E-mail:245642047@qq.com
  • 通讯作者: 戴美松,高永彬
  • 基金资助:
    国家自然科学基金(32302492);浙江省果品新品种选育重点研发计划(2021C02066-5);国家现代农业(梨)产业技术体系(CARS-28-03)

Research progress on genetic map construction in fruit trees and QTL identification of major fruit quality traits

DU Chenfei1,2(), LI Wenjue1,2, WEI Chunyan2, CAI Danying2, WANG Yuezhi2, SHI Zebin2, DAI Meisong2,*(), GAO Yongbin1,*()   

  1. 1. College of Horticultural Science, Zhejiang A&F University, Hangzhou 311300, China
    2. Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2025-03-19 Published:2026-03-25 Online:2026-04-17
  • Contact: DAI Meisong,GAO Yongbin

摘要:

在育种实践中,苹果、柑橘、梨等主要果树作物因其高度杂合的遗传背景、漫长的育种周期,以及数量性状的多基因调控特性,导致传统杂交育种效率受到限制。近年来,基于分子标记的高密度遗传图谱构建与数量性状基因座(QTL)精细定位技术已成为解析果树重要农艺性状遗传机制的关键手段。国内外已构建多张果树遗传连锁图谱,成功定位了与果实大小、形状、硬度、色泽、糖酸含量及香气等关键品质性状相关的QTL,并借助多组学整合分析揭示了其分子调控通路。本文系统综述了果树遗传图谱的发展现状和主要品质性状QTL定位的研究进展,重点指出:优化后的分子标记技术(SSR、SNP)显著提升了遗传图谱分辨率,“拟测交”与“双假测交”理论为QTL分析提供了关键方法框架;尽管目前已在多种果树中定位到主要品质性状相关QTL,但其稳定性与跨环境适应性仍需进一步验证;此外,多性状协同遗传机制,以及QTL与环境互作研究仍较薄弱,限制了标记辅助育种的精准性。未来应结合高通量测序、多组学与机器学习技术,构建超密遗传图谱并挖掘候选基因,为果树高效分子设计育种奠定理论基础。

关键词: 果树, 遗传图谱, 品质性状, QTL定位

Abstract:

In breeding practice, traditional hybridization efficiency is constrained in major fruit crops such as apple, citrus, and pear due to their highly heterozygous genetic background, lengthy breeding cycles, and polygenic regulation of quantitative traits. In recent years, the construction of high-density genetic maps based on molecular markers and finemapping of quantitative trait loci (QTL) have become key approaches for unraveling the genetic mechanisms underlying key agronomic traits in fruit trees. Numerous genetic linkage maps have been developed worldwide, enabling the successfully mapping QTL associated with key quality traits including fruit size, shape, firmness, color, sugar-acid content, and aroma. Integrated multi-omics analyses have further revealed their molecular regulatory pathways. This review summarizes current progress in genetic mapping for fruit trees and QTL mapping achievements for major quality traits. Key findings indicate that optimized molecular marker techniques (SSR, SNP) have significantly enhanced genetic map resolution, while the “One-Ways-Pseudo-Testcross” and “Two-Ways-Pseudo-Testcross” theories have provided critical methodological frameworks for QTL analysis. Although QTLs related to major fruit quality traits have been identified in several fruit trees, their stability and cross-environment adaptability require further validation. Additionally, the synergistic genetic mechanisms of multiple traits and QTL-environment interactions remain poorly understood, limiting the precision of marker-assisted breeding. Future research should integrate high-throughput sequencing, multi-omics approaches, and machine learning to develop ultra-dense genetic maps, identify candidate genes, and establish theoretical foundations for efficient molecular design breeding in fruit trees.

Key words: fruit tree, linkage map, quality trait, QTL mapping

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