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园艺学报 ›› 2025, Vol. 52 ›› Issue (11): 3121-3138.doi: 10.16420/j.issn.0513-353x.2024-0872

• 综述 • 上一篇    下一篇

紫薇种质资源和杂交育种研究进展

文雯1,2, 倪龙杰2, 王金凤2,*(), 陈卓梅2,*()   

  1. 1 浙江农林大学林业与生物技术学院, 杭州 310000
    2 浙江省林业科学研究院, 杭州 310023
  • 收稿日期:2025-01-11 修回日期:2025-07-02 出版日期:2025-11-26 发布日期:2025-11-26
  • 通讯作者:
  • 基金资助:
    浙江省属科研院所扶持专项(2024F1065-4); 浙江省农业新品种重大专项花卉育种专项(2021C02071-4)

Germplasm and Research Progress in Hybrid Breeding of Lagerstroemia

WEN Wen1,2, NI Longjie2, WANG Jinfeng2,*(), CHEN Zhuomei2,*()   

  1. 1 College of Forestry and BiotechnologyZhejiang Agriculture and Forestry University, Hangzhou 311300, China
    2 Zhejiang Academy of Forestry, Hangzhou 310023, China
  • Received:2025-01-11 Revised:2025-07-02 Published:2025-11-26 Online:2025-11-26

摘要:

紫薇(Lagerstroemia indica)的种质资源极为丰富,包括多种自然种和栽培品种,基于此,全面综述了紫薇种质资源及杂交育种的研究进展,重点分析了种内杂交和远缘杂交的研究成果、杂交障碍的发生机制和应对策略以及杂交种鉴定技术。现有记录的紫薇属物种65种,育种工作者培育了众多不同类型的品种,但绝大多数为紫薇衍生品种,或者是紫薇与屋久岛紫薇(L. fauriei)、福建紫薇(L. limii)的种间杂交种。尽管紫薇与大花紫薇(L. speciosa)、尾叶紫薇(L. caudata)的种间杂交亲和,但前者杂交后代不育,不能进行回交;后者目前仅获得1个杂交品种。其余紫薇种间杂交或属间杂交,均存在受精前障碍或受精后障碍。为解决这些问题,研究人员通过授粉后向柱头喷施2,4-D或者采用胚胎离体培养等技术,成功获得了少量远缘杂交后代。目前杂交育种仍是培育紫薇新品种的主要手段,随着紫薇、大花紫薇等基因组数据的释放,通过对基因组数据进行挖掘分析,未来有望通过基因编辑技术实现对紫薇观赏性状的定向改良,从而快速培育出具有优良性状的紫薇新品种。

关键词: 紫薇, 种质资源, 杂交育种, 杂交障碍, 杂种鉴定

Abstract:

The germplasm resources of Lagerstroemia are extremely rich,including various natural species and cultivated varieties. Based on this,this article comprehensively reviews the research progress of the germplasm of Lagerstroemia and cross breeding,focusing on analyzing the research results of intraspecific hybridization and distant hybridization,the occurrence mechanism and coping strategies of hybridization barriers,and the identification techniques of hybrids. There are 65 recorded species of Lagerstroemia. Utilizing these abundant resources,breeders from various countries have cultivated a large number of different types of varieties. However,the vast majority are derivatives of L. indica or interspecific hybrids of L. indica and L. fauriei,or L. indica and L. limii. Although the interspecific hybridization between L. indica and L. speciosa,and between L. indica and L. caudata is compatible,the hybrid descendants of the former are sterile and cannot be backcrossed;for the latter,only one hybrid variety between the two has been obtained so far. For the remaining interspecific or intergeneric hybrids of Lagerstroemia,there are pre-fertilization or post-fertilization barriers. To solve these problems,researchers have successfully obtained a small number of distant hybrid descendants through techniques such as spraying 2,4-D on the stigma after pollination or embryo in vitro culture. Cross breeding is the main method for cultivating new varieties of Lagerstroemia at present,with the release of genomic data such as that of L. indica and L. speciosa,it is expected that through the mining and analysis of genomic data,the directional improvement of the ornamental traits of Lagerstroemia can be achieved through gene editing technology in the future,thereby rapidly cultivating new varieties of Lagerstroemia with excellent traits.

Key words: Lagerstroemia, germplasm, hybrid breeding, cross-incompatibility, hybrid identification