瑞香属和荛花属 (瑞香科) 植物叶表皮特征及其分类学意义

doi:10.7677/ynzwyj201515019

Plant Diversity ›› 2015, Vol. 37 ›› Issue (05): 493-512.DOI: 10.7677/ynzwyj201515019

• 研究论文 • 下一篇

瑞香属和荛花属 (瑞香科) 植物叶表皮特征及其分类学意义

张永增1、2, 孙文光1、2, 高彩珍1, 曹文娟1, 张永洪1**, 李志敏1、2

1 云南师范大学生命科学学院，昆明650500；2 生物能源持续开发利用教育部工程研究中心，昆明650500

收稿日期:2015-01-31 出版日期:2015-09-25 发布日期:2015-04-10
基金资助:
国家自然科学基金委-云南省联合基金重点项目 (U1136601)；国家自然科学基金项目 (31360049; 31160045; 31460050)；系统与进化植物学国家重点实验室开放项目 (LSEB201204)；科技基础性工作专项

(2013FY112100)

Character of Leaf Epidermis and Their Systematic Significance of Daphne and Wikstroemia (Thymelaeaceae)

ZHANG Yong-Ceng-1、2, SUN Wen-Guang-1、2, GAO Cai-Zhen-1, CAO Wen-Juan-1, ZHANG Yong-Hong-1**, LI Zhi-Min-1、2

1 School of Life Science, Yunnan Normal University, Kunming 650500, China; 2 Engineering Research Center of Sustainable
Development and Utilization of Biomass Energy, Ministry of Education, Kunming 650500, China

Received:2015-01-31 Online:2015-09-25 Published:2015-04-10
Supported by:
国家自然科学基金委-云南省联合基金重点项目 (U1136601)；国家自然科学基金项目 (31360049; 31160045; 31460050)；系统与进化植物学国家重点实验室开放项目 (LSEB201204)；科技基础性工作专项

(2013FY112100)

摘要/Abstract

摘要：

选取瑞香科瑞香属 (Daphne) 植物56种 (变种)、荛花属 (Wikstroemia) 植物45种(变种)，及12种外类群植物，进行叶表皮微形态解剖学研究。结果表明，瑞香属和荛花属植物叶表皮细胞大多为多边形和不规则形，垂周壁大多为平直、弯曲和浅波状，大小为30~40μm × 10~20μm，部分具毛。气孔呈随机分布，大小为20~36μm × 17~25μm，宽椭圆形或窄椭圆形，气孔密度为100~250S/mm2，气孔主要类型为无规则型 (anomocytic)。瑞香属与荛花属的叶表皮性状整体具有一致性，两属间没有典型区别特征，很多性状在两个属中呈交叉分布，不反映瑞香属和荛花属分别是自然 (单系) 类群。毛管花属 (Eriosolena) 植物特有的乳突 (papillae) 特征在瑞香属和荛花属植物中均不存在，不支持将其并入瑞香属的分类处理。通过气孔器类型比较分析认为，瑞香属和荛花属与瑞香亚科中的其他属，如鼠皮树属 (Rhamnoneuron)、毛管花属、假狼毒属 (Stelleropsis)、Daphnopsis、结香属 (Edgeworthia) 相比具衍生性状，是衍生类群。

关键词: 瑞香属, 荛花属, 瑞香科, 表皮性状, 气孔性状, 分类学

Abstract:

Fiftysix species (varieties) of Daphne, fortyfive species (varieties) of Wikstroemia and twelve species of outgroups from Thymelaeaceae, with ten phenotypic characters were selected, to study the leaf epidermal microfeatures by using light microscopy, Results reveal that Daphne and Wikstromia are consistent in most of leaf features. The epidermal cell are polygonal and irregular in shape. The patterns of anticlinal wall are straight, curved and U shape. The cell sizes range in 30-40μm × 10-20μm. Some species have singly hair on surface. Stomatal distribution is random, size range in 20-36μm × 17-25μm, most are broadly elliptical and narrowly elliptical, stomatal frequency are 100-250S/mm2, and the anomocytic stomatal type is dominate. It is apparently that many stomatal and epidermal features in Daphne and Wikstromia are crossed, and no distinguishable features are suitable for separating this two genera. Results from epidermal characters analysis don’t support monophyletic status of Daphne and Wikstroemia. Eriosolena should not be include in the genus Daphne as the special papillae only found in Eriosolena composita rather than in other genera of Thymeleaceae. In compare with other genera, Rhamnoneuron, Eriosolena, Stelleropsis, Daphnopsis and Edgeworthia in Thymelaeoideae, Daphne and Wikstroemia might be derived and originated latter based on the stomatal features.

Key words: Daphne, Wikstroemia, Thymelaeaceae, Leaf epidermis, Stomatal characters, Taxonomy

中图分类号:

Q 944，Q 949

张永增, 孙文光, 高彩珍, 曹文娟, 张永洪, 李志敏. 瑞香属和荛花属 (瑞香科) 植物叶表皮特征及其分类学意义[J]. Plant Diversity, 2015, 37(05): 493-512.

ZHANG Yong-Ceng, SUN Wen-Guang, GAO Cai-Zhen, CAO Wen-Juan, ZHANG Yong-Hong**, LI Zhi-Min. Character of Leaf Epidermis and Their Systematic Significance of Daphne and Wikstroemia (Thymelaeaceae)[J]. Plant Diversity, 2015, 37(05): 493-512.

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瑞香属和荛花属 (瑞香科) 植物叶表皮特征及其分类学意义

Character of Leaf Epidermis and Their Systematic Significance of Daphne and Wikstroemia (Thymelaeaceae)

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