中甸刺玫的系统位置及杂交起源研究

doi:10.13430/j.cnki.jpgr.20180109001

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中甸刺玫的系统位置及杂交起源研究
DOI:
                        10.13430/j.cnki.jpgr.20180109001
                    
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作者单位:1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;2云南大学生命科学学院，昆明 650091,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;,1云南省农业科学院花卉研究所/云南省花卉育种重点实验室/国家观赏园艺工程技术研究中心，昆明 650205;
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基金项目:国家自然科学基金(31560301；31260198)

Study on the phylogenetic position and hybrid origination of Rosa praelucens Byhouwer

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1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;2 Life School of Yunnan University, Kunming 650091,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;,1Flower Research Institute, Yunnan Academy of Agricultural Sciences / Yunnan Key Laboratory for Flower Breeding / National Engineering Research Center of Ornamental Horticulture, Kunming 650205;

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摘要:

中甸刺玫是云南特有的高山花卉和耐低温的月季种质资源,也是蔷薇属唯一有报道的10倍体野生种。然而,中甸刺玫的系统位置存在较大争议,其起源也不清楚。本研究利用5S rDNA和4个叶绿体DNA(cpDNA)片段(psbA-atpH、rbcL、rpl16和trnL-F)来构建蔷薇属的系统关系,明确中甸刺玫的系统位置；通过与近缘物种的序列比对,推测中甸刺玫的原始亲本。结果表明：①蔷薇属植物的5S rDNA序列长度为498bp-573 bp,变异程度随物种表现出明显差异。cpDNA片段中psbA-trnH变异较大,4个片段联合分析的矩阵长2969bp,其中变异位点170个。②分子系统树中,中甸刺玫均与桂味组的物种聚在一起,与小叶组的刺梨亲缘关系较远,其系统位置应从小叶组移至桂味组。③中甸刺玫的10倍体起源很复杂,其原始母本最可能是西南蔷薇,细梗蔷薇和华西蔷薇是其父本,而尾萼蔷薇和西北蔷薇也可能以父本的身份参与了中甸刺玫的杂交物种形成。

Abstract:

Rosa praelucens Byhouwer is a famous alpine flower and rose germplasm resource highly tolerant to coldness endemic to Yunnan. It is also the only decaploid wild rose once reported. However, its phylogenetic position is still a debatable point and its origination is unclear yet. In this study, its phylogenetic position was explicated by reconstructing the phylogeny of 49 rose species based on 5S rDNA and 4 chloroplast DNA fragments, i. e. psbA-atpH, rbcL, rpl16 and trnL-F. Its original ancestors were postulated by sequence alignment and base comparison with its closely related species. The results were as the follows. Firstly, the sequence length of 5S rDNA was 498-573 bp and varied significantly among species. The combined alignment of 4 cpDNA fragments had 2969 bases, 170 of which were polymorphic. Secondly, both phylogenetic tree based on 5S rDNA and cpDNA supported that R. praelucens clustered with species from Sect. Cinnamomeae, rather than R. roxburghii of Sect. Microphyllae. Thus, it should be placed in Sect. Cinnamomeae rather than Sect. Microphyllae. Thirdly, the origination of R. praelucens was very complex. Rosa murielae was its most possible maternal ancestor. Both R. gracilifolia and R. moyesii were its paternal ancestors, but R. caudata and R. davidii might also have participated the hybrid origination of R. praelucens as paternal parent.

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王开锦,张婷,王其刚,等.中甸刺玫的系统位置及杂交起源研究[J].植物遗传资源学报,2018,19(5):1006-1015.

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收稿日期:2018-01-09
最后修改日期:2018-05-08
录用日期:2018-02-11
在线发布日期: 2018-09-14
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