北美云杉针叶表皮结构的差异分析

doi:10.11707/j.1001-7488.20140319

林业科学 ›› 2014, Vol. 50 ›› Issue (3): 134-138.doi: 10.11707/j.1001-7488.20140319

北美云杉针叶表皮结构的差异分析

李智, 许荔, 林梦, 杨萌, 贾桂霞

北京林业大学园林学院国家花卉工程中心北京 100083

收稿日期:2013-04-25 修回日期:2013-12-26 出版日期:2014-03-25 发布日期:2014-04-16
基金资助:
国家林业局科技推广项目（[2010]27）；北京林业大学大学生科研训练计划（[2011]27）。

Analysis of Variation in Epidermal Structure of Picea pungens Needles

Li Zhi, Xü Li, Lin Meng, Yang Meng, Jia Guixia

National Engineering Research Center for Floriculture College of Landscape Architecture, Beijing Forestry University Beijing 100083

Received:2013-04-25 Revised:2013-12-26 Online:2014-03-25 Published:2014-04-16
Contact: 贾桂霞

摘要/Abstract

关键词: 北美云杉, 蓝色针叶, 表皮结构, 蜡质

Abstract:

Picea pungens has high ornamental value because of its rare blue-green needles. This paper compared colors of needles from 1-year-old seedlings, 4-year-old seedlings, 35-year-old plants of the species and 12-year-old plants of P. pungens ‘Glauca Globosa’.The result showed that needles of 1-year-old seedlings exhibited almost green, needles of new branches of some 4-year-old seedling exhibited blue, while needles of 35-year-old plants with blue needles and the‘Glauca Globosa’plants, exhibited almost all blue. Observation via a dissecting microscope found that on the epidermis of blue needles there was a layer of substance, which could be dissolved into organic solvents or be removed through physical friction. The needles became green after the layer of substance was removed. Through observation via scanning electron microscope, it was found out that the epidermis of blue needles was covered with a quantity of rod-like substances arranged intensely and irregularly, with a thickness from 1.307 65 μm to 5.014 94 μm, while there was little or none the substance in the green needles. Analysis with GC-MS showed that the substances were mainly alkanes, aliphatic compounds and cyclic compounds, which generated wax crystals on the epidermis of needles. This paper laid the foundation for analysis of P. pungens' blue-color needles.

Key words: Picea pungens, blue needles, epidermal structure, wax crystals

中图分类号:

S718.47

李智, 许荔, 林梦, 杨萌, 贾桂霞. 北美云杉针叶表皮结构的差异分析[J]. 林业科学, 2014, 50(3): 134-138.

Li Zhi, Xü Li, Lin Meng, Yang Meng, Jia Guixia. Analysis of Variation in Epidermal Structure of Picea pungens Needles[J]. Scientia Silvae Sinicae, 2014, 50(3): 134-138.

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北美云杉针叶表皮结构的差异分析

Analysis of Variation in Epidermal Structure of Picea pungens Needles

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