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山丹种质资源花器官的形态多样性研究-植物遗传资源学报.doc

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山丹不同居群花器官的形态多样性研究 刘冬云1 刘燕2 (1河北农业大学 园林与旅游学院,保定071000;2北京林业大学园林学院国家花卉工程技术研究中心,北京100083) 摘要:为掌握山丹种质资源花器官的多样性,对国内山丹资源进行引种种植观测。结果表明,25个山丹居群的花器官性状表现出一定差异。差异主要来源于花蕾毛的有无、花瓣宽、反卷度及花色等性状,其中花朵直径与花药长与地理因子(经度、纬度、海拔)存在显著或极显著相关性;根据主要花器官性状对25个居群进行类平均UPGMA聚类,可以分为5类,结果表明山丹居群花器官性状的聚类与地理位置及海拔都有一定的关系。 关键词:山丹; 种质资源; 花器官; 居群; 多样性 Study on the Floral Diversity of the Different populations of Lilium pumilum DC. LIU Dong-Yun1 LIU Yan2 (1 College of Gardens and Tourism, Agricultural University of Hebei, Baoding, 071000; 2 College of Landscape Architecture, Beijing Forestry University, National Floriculture Engineering Research Center, Beijing 100083) Abstract: the floral diversity of germplasm resources of L.pumilum, domestic resources of L.pumilum were planted and observed. The results showed that here were certain discrepancies among twenty five L.pumilum populations. The discrepancies were mainly concerned with those flowers With or without hair bud, petals wide, anti-curl of petals and flower color, etc. There were significant or very significant correlation between the characters of flower diameter, anther length and the geographical factors(longitude, latitude, elevation). According to the main floral traits of 25 populations L.pumilum, it can be clustered into 5 groups. The geographical location and altitude were correlated with clusters based on floral traits. 2准差1rent Key words: Lilium pumilum DC.; Germplasm Resources; Floral organ; population ; Diversity 中国,山丹(Lilium pumilum DC.)别名细叶百合,为百合科百合属多年生草本,其花色鲜艳、姿形秀丽,适应性强,具有许多优良性状是百合育种和品质改良的重要基因资源。我国拥有丰富的野生山丹种质资源,开展其野生种质资源的调查收集,研究其居群在不同地理位置、生境、气候条件等生态因子下的遗传变异,对于野生山丹种质资源的保护和百合育种具有重要意义。本研究在对我国野生山丹进行系统的实地考察和搜集的基础上,选择我国山丹主要分布区和河北省主要分布区的25个居群进行形态学性状的比较研究,旨在了解我国野生山丹在居群水平上的变异状况和变异规律,为山丹种质资源的有效保护和利用奠定基础。 38° 51,东经115° 31,海拔18 m210天1.2.2 性状测定 观测不同居群所选个体植株的花瓣、花丝、子房、花柱等的长度;花径、花瓣宽度、花瓣翻卷度,以及花瓣颜色、花蕾毛有无等性状。其中长度、宽度、直径等数据采用直尺测量,测量精度为0.
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