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Phenotypic Variation in Flower Color and Morphology in the Gerbera (Gerbera hybrida) F1 Hybrid Population and Their Association with EST-SSR Markers

文献类型： 外文期刊

作者： Zhou, Yiwei 1 ; Zou, Xinru 1 ; Yan, Fulong 1 ; He, Jingjuan 1 ; Zeng, Sixian 1 ; Yu, Yunyi 1 ; Tang, Xiaoshuang 1 ; Liang, Xuanguo 1 ; Cai, Xiuping 1 ; Yu, Rangcai 1 ; Fan, Yanping 1 ;

作者机构： 1.South China Agr Univ, Coll Forestry & Landscape Architecture, Res Ctr Ornamental Plants, Guangzhou 510642, Peoples R China

2.Guangdong Acad Agr Sci, Environm Hort Res Inst, Guangdong Key Lab Ornamental Plant Germplasm Innov, Guangzhou 510642, Peoples R China

3.South China Agr Univ, Coll Life Sci, Guangzhou 510642, Peoples R China

4.South China Agr Univ, Guangdong Key Lab Innovat Dev & Utilizat Forest Pl, Guangzhou 510642, Peoples R China

关键词： gerbera; genetic analysis; flower color; association analysis

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 1 期

页码：

收录情况： SCI

摘要： Gerbera (Gerbera hybrida) is a widely cultivated ornamental plant. However, its genetic improvement is limited by the lack of genetic analysis and molecular markers for traits. In this study, we analyzed the phenotypic and genotypic variation of 140 F-1 progeny from two gerbera varieties with different flower types and colors. We evaluated the flower's morphology, color, and pigment content of the F-1 population and performed cluster principal component analysis (PCA) and correlation analysis. The results showed that the main ornamental traits of the hybrid progeny varied greatly. The segregation ratios of single and double flowers and ligulate and split ray florets were both 1:1. The flower colors of the F-1 progeny were mainly red and purple-red, similar to the male parent's color. Furthermore, we conducted a genetic analysis of the hybrid progeny using EST-SSR markers and performed association analysis with phenotypic traits. We identified 2, 2, 3, 1, and 2 loci to be associated with peduncle length (PL), ray floret length (RFL), and outer ray floret; the level of apex relative to the top of involucre (LAI); outer corolla lips (OCL); and the b* of ray floret color, respectively. Our results reveal the genetic patterns of important ornamental traits and provide a theoretical basis and practical tools for gerbera genetic breeding.

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