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Genetic Relationships of Wild Roses, Old Garden Roses, and Modern Roses Based on Internal Transcribed Spacers and matK Sequences

文献类型： 外文期刊

作者： Qiu, Xianqin 1 ; Zhang, Hao 1 ; Jian, Hongying 1 ; Wang, Qigang 1 ; Zhou, Ningning 1 ; Yan, Huijun 1 ; Zhang, Ting 1 ; Ta 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Flower Res Inst, Natl Engn Res Ctr Ornamental Hort, Yunnan Key Lab Flower Breeding, Kunming 650200, Peoples R China

2.Yunnan Acad Agr Sci, Flower Res Inst, Natl Engn Res Ctr Or

关键词： genetic relationships;ITS;matK;Rosa;rose breeding

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

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收录情况： SCI

摘要： Roses are one of the economically most important groups of ornamental plants. The internal transcribed spacers (ITS) of the nuclear ribosomal DNA and the chloroplast gene matK were used to investigate the genetic diversity and genetic relationships among Rosa germ plasm including 39 wild species, 21 old garden roses, and 29 modern cultivars. Three dendrograms based on ITS and matK clustering data indicated that 1) 39 wild genotypes were consistent with their classification into botanical sections with only a few exceptions; 2) most of the wild genotypes were separated from rose cultivars. However, three sections, Synstylae, Chinenses, and Rosa, that contributed to the modern roses generally gathered together with almost all old garden and modern roses on the molecular level; and 3) the relationships between cultivated roses as inferred by ITS and matK sequences do not correlate with horticultural groups. Results demonstrated that both sequence techniques can contribute to clarifying the genetic relationships of rose accessions and germplasm conservation to enhance the ornamental and economic value of rose.

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