[1]韩彪,李文清*,鲁仪增,等. 不同种源地北美鹅掌楸光合特性研究[J].西北林学院学报,2015,30(04):73-77.[doi:doi:10.3969/j.issn.1001-7461.2015.04.12]
　HAN Biao,LI Wen-qing*,LU Yi-zeng,et al. Photosynthetic Characteristics of Liriodendron tulipifera from Different Provenances[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2015,30(04):73-77.[doi:doi:10.3969/j.issn.1001-7461.2015.04.12]
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 不同种源地北美鹅掌楸光合特性研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第30卷
期数:
2015年04期
页码:
73-77
栏目:
出版日期:
2015-07-31

文章信息/Info

Title:
 Photosynthetic Characteristics of Liriodendron tulipifera from Different Provenances
文章编号:
1001-7461(2015)04-0073-05
作者:
 韩彪; 李文清*; 鲁仪增; 王磊; 董昕; 解孝满
 （山东省林木种质资源中心，山东 济南 250014）
Author(s):
 HAN Biao;  LI Wen-qing*;  LU Yi-zeng;  WANG Lei;  DONG Xin;  XIE Xiao-man
 (Center for Forest Genetic Resource of Shandong Province, Jinan, Shandong 250014, China)
关键词:
 ; 北美鹅掌楸; 种源; 光合特性
Keywords:
Liriodendron tulipifera;  provenance;  photosynthesis
分类号:
S792.21
DOI:
doi:10.3969/j.issn.1001-7461.2015.04.12
文献标志码:
A
摘要:
 以3个种源地北美鹅掌楸无性系为试验材料，利用LI-6400XT便携式光合测定系统，研究了净光合速率日变化及对有效光辐射和CO2的响应等光合特性。结果表明，宾夕法尼亚种源和俄亥俄种源北美鹅掌楸的Pn日变化曲线呈双峰型，具有明显的午休现象，峰值出现在10:00和14:00，纽约种源北美鹅掌楸不具有明显的午休现象。光响应曲线和CO2响应曲线数据分析表明，纽约种源北美鹅掌楸光饱和点（1 180.4 μmol·m-2·s-1）和光补偿点（10.27 μmol·m-2·s-1）均高于另外2个种源。这种趋势也同样适用于CO2饱和点（1 595.0 μmol·m-2·s-1）和CO2补偿点（107.5 μmol·m-2·s-1）。在北方低光照环境下，纽约种源较高的光补偿点和CO2补偿点，不利于有机物的积累，宾夕法尼亚种源对光照和CO2要求较低，更适合北方环境。
Abstract:
 Diurnal changes of photosynthesis, light response curves and CO2 response curves of the Liriodendron tulipifera clones which introduced from three different provenances were researched by LI-6400XT．The results showed that the diurnal changes of the net photosynthetic rate of both Pennsylvania’s and Ohio’s clones displayed twin peaks with an obvious midday depression. The peaks appeared in 10:00 and 14:00. However, midday depression disappeared in the New York’s clone. The analysis of light response and CO2 response curves showed that both the light saturation point (1 180.4 μmol·m-2·s-1) and the light compensation point (10.27 μmol·m-2·s-1) of New York’s clone were higher than those of the Pennsylvania’s and Ohio’s clones. This trend was also applicable to the CO2 (1 595.0 μmol·m-2·s-1) saturation point and CO2 compensation point (107.5μmol·m-2·s-1). Under the low light conditions in northern China , light compensation point and CO2 compensation point were higher in New York provenance, so it was not conducive to the accumulation of organic matter. Pennsylvania’s provenance was more suitable for the northern environment because it needs little light and CO2.

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备注/Memo

备注/Memo:
 收稿日期：2014-10-17修回日期：2014-12-08
基金项目：山东省农业良种工程重大课题（鲁农良字[2010]6号）。
作者简介：韩彪，男，工程师，研究方向：林木种质资源收集、保护与利用。E-mail:hanbiaook831228@163.com
*通信作者：李文清，男，研究员，研究方向：林木种质资源收集、保护与利用。E-mail:lmzzzy@163.com
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