| 根据花粉形态探讨中国栽培牡丹的起源 |
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| 引用本文： | 程璧瑄, 于超, 周利君, 等. 蔷薇属月季组植物的花粉形态学研究[J]. 云南农业大学学报（自然科学）, 2021, 36(2): 314-323. DOI: 10.12101/j.issn.1004-390X(n).201908032 |
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| 作者姓名： | 程璧瑄 于超 周利君 蔡珩瑜 罗乐 潘会堂 张启翔 |
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| 作者单位： | 1.花卉种质创新与分子育种北京市重点实验室，北京 100083;2.国家花卉工程技术研究中心，北京 100083;3.城乡生态环境北京实验室，北京 100083;4.北京林业大学 园林学院，北京 100083 |
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| 基金项目： | 国家重点研发计划课题（2019YFD1001001） |
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| 摘 要： | 目的了解月季组下物种的亲缘关系及演化规律。方法选取蔷薇属月季组的香水月季和月季花25份材料，利用电子扫描显微镜观察其花粉形态，选取12个性状进行测量，并根据观测结果对研究材料进行聚类分析。结果供试材料的花粉均为单粒花粉，呈长球形或超长球形(P/E在1.98~2.35之间)，大小为(36.06~42.81) μm×(16.39~20.07) μm。萌发孔三孔沟，外壁纹饰均为孔穴—条纹型。不同种类之间花粉的外壁纹饰具有一定的相似性，但仍然在条纹走向和孔穴穿透等非数量性状方面有所差异，从而对外壁纹饰进一步细分为不同类型。聚类分析结果表明：所有材料被划分为4个类群。结论香水月季是蔷薇属中一个较为进化的物种。
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| 关 键 词： | 香水月季 月季组 花粉形态 聚类分析 |
| 收稿时间： | 2019-08-21 |
| 修稿时间： | 2020-11-05 |
Identification of Rose cultivars by pollen grain surface patterns |
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| Bixuan CHENG, Chao YU, Lijun ZHOU, et al. Pollen Morphologies of R. odorata and R. chinensis from Rosa sect. chinenses DC.[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2021, 36(2): 314-323. DOI: 10.12101/j.issn.1004-390X(n).201908032 |
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| Authors: | Bixuan CHENG Chao YU Lijun ZHOU Hengyu CAI Le LUO Huitang PAN Qixiang ZHANG |
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| Affiliation: | 1.Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing 100083, China;2.National Engineering Research Center for Floriculture, Beijing 100083, China;3.Beijing Laboratory of Urban and Rural Ecological Environment, Beijing 100083, China;4.School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China |
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| Abstract: | PurposesBy observing pollen morphology, to analyze the evolutionary relationships of the species of Rosa sect. chinenses.MethodsTwenty-five individuals that belong to R. sect. chinenses were used as the materials. Using electron scanning microscope, twelve characters of pollen grains were observed and analyzed. Meanwhile a cluster analysis was conducted.ResultsPollen dispersed as monads, prolate and perprolate (P/E arranged from 1.98 to 2.35); size medium [(36.06-42.81) μm×(16.39-20.07) μm]; tricolpate; perforate-striateornamentation. Characters of the exine have a certain similarity among all 25 individuals, but the exine can still be subdivided according to some non-quantitative traits such as striate and fovela. The results of cluster analysis showed that all pollen materials were clustered into 4 groups.ConclusionR. odorata germplasms are generally at a more evolved level in Rosa L. |
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| Keywords: | Rosa odorata R. sect. chinenses pollen morphology cluster analysis |
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