[1]郭力宇,施曼,吴驭帆,等. 光强对欧洲鹅耳枥秋季叶衰期光合性能及内源激素的影响[J].西北林学院学报,2018,33(4):17-23.[doi:10.3969/j.issn.1001-7461.2018.04.03]
　GUO Li-yu,SHI Man,WU Yu-fan,et al. Effects of Light Intensity on Photosynthetic Characteristics and Endogenous Hormones of Carpinus betulus during Autumn Senescence[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(4):17-23.[doi:10.3969/j.issn.1001-7461.2018.04.03]
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 光强对欧洲鹅耳枥秋季叶衰期光合性能及内源激素的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第4期
页码:
17-23
栏目:
出版日期:
2018-07-31

文章信息/Info

Title:
 Effects of Light Intensity on Photosynthetic Characteristics and Endogenous Hormones of Carpinus betulus during Autumn Senescence
文章编号:
1001-7461(2018)04-0017-07
作者:
 郭力宇1; 2; 施曼1; 3; 吴驭帆2; 祝遵凌1; 2; 4*
 （1.南京林业大学 南方现代林业协同创新中心，江苏 南京 210037；2.南京林业大学 风景园林学院，江苏 南京 210037；3.南京林业大学 林学院，江苏 南京 210037；4.南京林业大学 艺术设计学院，江苏 南京 210037）
Author(s):
 GUO Li-yu1; 2; SHI Man1; 3; WU Yu-fan2; ZHU Zun-ling1; 2; 4*
 （1.Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing,Jiangsu 210037,China；2.College of Landscape Architecture,Nanjing Forestry University,Nanjing,Jiangsu 210037,China)
关键词:
 ; 欧洲鹅耳枥; 叶衰老期; 光强; 光合能力; 内源激素
Keywords:
Carpinus betulus;  leaf senescence;  light intensity;  photosynthetic capacity;  endogenous hormone
分类号:
S718.43
DOI:
10.3969/j.issn.1001-7461.2018.04.03
文献标志码:
A
摘要:
 为探究不同光强下4品种（种）欧洲鹅耳枥（Carpinus betulus、Carpinus betulus ‘Beekman’、Carpinus betulus ‘Frans Fontaine’、Carpinus betulus ‘Lucas’）在秋季变色期叶片衰老的主要生理变化规律，提出秋季叶衰老期最佳光照管理措施。采用不同光照强度处理，对欧洲鹅耳枥叶衰老期叶片中叶绿素、光合参数、内源激素进行测定。结果表明，全光照条件下，4品种（种）欧洲鹅耳枥秋季叶片衰老期光合性能最佳；Carpinus betulus ‘Lucas’叶片中叶绿素含量、净光合速率、内源激素含量在不同光照强度下差异不显著（P>0.05）或较其他品种（种）差异小，对光强的敏感性弱，更适合园林弱光环境的应用；净光合速率的下降和内源激素ABA含量上升是欧洲鹅耳枥叶落期叶衰老较佳的指示指标；在秋季叶片衰老期，4品种（种）欧洲鹅耳枥叶片仍可进行高效的光合作用，具有较强的光合固碳能力，有利于维持大气生态系统碳平衡，是适合园林应用的优选树种。
Abstract:
 In order to explore the best light management measures for the hornbeam leaves during autumn discoloration,the main physiological changes during leaf senescence of four hornbeam species were investigated,including Carpinus betulus,C.betulus ‘Beekman’,C.betulus ‘Frans Fontaine’,and C.betulus ‘Lucas’.The content of chlorophyll,photosynthetic parameters and endogenous hormones in the leaves under different light intensity treatments were determined.The results showed that under full illumination condition,all four varieties (species) presented the best photosynthetic performance.C.betulus ‘Lucas’ had no significant difference in chlorophyll content,net photosynthetic rate and endogenous hormone content among different light intensities (P>0.05) or less difference than other varieties (species),and had the strongest light tolerance,showing that it was more suitable for the application of garden light environment.The decrease of net photosynthetic rate and the increase of endogenous hormone ABA content were the best indicators of leaf senescence in four hornbeam species.In autumn leaf senescence period,four varieties (species) of hornbeam could still perform high-efficiency photosynthesis,with strong photosynthetic carbon fixation capacity,which was beneficial to maintaining the balance of atmospheric carbon ecological system,which indicated that hornbeam was a preferred tree suitable for landscape applications.

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备注/Memo

备注/Memo:
 收稿日期：2018-03-06修回日期：2018-03-16
基金项目：国家自然科学基金（31770752）；江苏省工程技术研究中心建设项目（BM2013478）；江苏省六大人才高峰项目（NY-029）。
作者简介：郭力宇，男，在读硕士，研究方向：园林植物栽培与应用。E-mail：315504069@qq.com
*通信作者：祝遵凌，男，博士，教授，研究方向：园林植物栽培与应用。E-mail：zhuzunling@aliyun.com
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