南京林业大学学报(自然科学版) ›› 2006, Vol. 30 ›› Issue (01): 33-36.doi: 10.3969/j.jssn.1000-2006.2006.01.008

• 研究论文 • 上一篇    下一篇

7种冬青树种耐低温能力比较

毛志滨1,2,谢晓金3,汤庚国1*   

  1. 1. 南京林业大学风景园林学院, 江苏 南京 210037; 2. 江苏省中国科学院植物研究所, 江苏 南京 210014; 3. 南京农业大学园艺学院, 江苏 南京 210095
  • 出版日期:2016-03-28 发布日期:2016-03-28

The Comparison of Low Temperature Tolerance Ability of Seven Species of Ilex Trees

MAO Zhi-bin1,2, XIE Xiao-jin3, TANG Geng-guo1*   

  1. 1. College of Landscape Architecture Nanjing Forestry University, Nanjing 210037, China; 2. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; 3. College Horticulture Nanjing Agriculture University, Nanjing 210095, China
  • Online:2016-03-28 Published:2016-03-28

摘要: <正>对南京幕府山地区进行植物调查和标本采集的基础上,进行该地区植物区系基本组成分析。幕府山植物区系特点为:植物区系具有强烈的过渡性,具有明显的北亚热带性质。把幕府山与相似纬度的安徽琅琊山、清凉峰自然保护区进行比较分析,结果表明,3个地区植物区系的地理成分总体上相似,主要是温带和热带成分。

Abstract: Electric eonductivities of excised-leaves of 7 species of Ilex trees distributed in China were measured and lethal temperature 50 (LT50) were calculated under the simulated freezing treatment. The results indicated that the low temperature tolerance ability of 7 species of Ilex trees had a significant difference, and the freezing resistance from strong to weak was Ilex latifolia, I. comuta, I. chinensis, I. rotunda, I. zhejiangensis, I. hylonoma, I. integra. Four trees selected from 7 species of Ilex trees that treated by 4℃ and -16℃ were chosen to measure the contents of unsaturated fatty acids. The results revealed the content of unsaturated fatty acids and IUFA increased as the temperature decreased, and the increasing extent of IUFA was were different respectively so they could be used as supplementary validation of the low temperature tolerance ability of different Ilex trees. The research resuits also provide important indexes for introducing Ilex trees to higher latitude region.

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