[1]吴小林,姚月华,方霞,等.两种叶型楠木叶片表观特征及光合特性的比较分析[J].浙江林业科技,2018,38(03):30-35.[doi:10.3969/j.issn.1001-3776.2018.03.005]
 WU Xiao-lin,YAO Yue-hua,FANG Xia,et al.Phenotypic and Photosynthetic Properties of Leaves in Phoebe zhennan[J].Journal of Zhejiang Forestry Science and Technology,2018,38(03):30-35.[doi:10.3969/j.issn.1001-3776.2018.03.005]
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两种叶型楠木叶片表观特征及光合特性的比较分析()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
38
期数:
2018年03期
页码:
30-35
栏目:
出版日期:
2018-07-30

文章信息/Info

Title:
Phenotypic and Photosynthetic Properties of Leaves in Phoebe zhennan
作者:
吴小林1姚月华2方霞3蒋仲龙4杨平昆1张茂付1童再康3
1. 浙江省庆元县实验林场,浙江 庆元 323800;2. 浙江省庆元县林业局,浙江 庆元 323800; 3. 浙江农林大学 亚热带森林培育国家重点实验室,浙江 杭州 311300;4. 浙江省林业厅,浙江 杭州 310020
Author(s):
WU Xiao-lin1YAO Yue-hua2FANG Xia3JIANG Zhong-long4YANG Ping-kun1ZHANG Mao-fu1TONG Zai-kang3
1. Qingyuan Experimental Forest Farm of Zhejiang, Qingyuan 323800 , China; 2. Qingyuan Forestry Bureau of Zhejiang, Qingyuan 323800 , China; 3.The State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou 311300, China; 4. Zhejiang Provincial Department of Forestry, Hangzhou 310020, China
关键词:
楠木叶型表观特性光合特性净光合速率
Keywords:
Phoebe zhennan apparent characteristics photosynthetic property net photosynthetic rate
分类号:
S792.24
DOI:
10.3969/j.issn.1001-3776.2018.03.005
文献标志码:
A
摘要:
为研究大叶楠木Phoebe zhennan f. elliptical 和小叶楠木P. zhennan f. oblong 两种叶型楠木P. zhennan 幼树叶 片表观特性和光合特性差异及其影响因子,本文以2 年生两种叶型的楠木为研究对象,测定叶片形态指标和夏季 光合特性参数,分析影响净光合速率的相关因子。结果表明:(1)两种叶型楠木的叶面积、叶片长、叶片宽和叶 脉数存在显著差异(P<0.05),不同冠层的叶片也存在显著差异;(2)大叶楠木的净光合速率显著高于小叶楠木, 由多元逐步回归分析与通径分析显示,影响大叶楠木净光合速率的主要因子是气孔导度、胞间CO2 浓度、叶片水 分亏压、叶温和蒸腾速率5 个因子,其中气孔导度起决定作用。而影响小叶楠木净光合速率是叶片水分亏压、空 气相对湿度、大气二氧化碳浓度、蒸腾速率和胞间CO2 浓度5 个因子,且叶片水分亏压对净光合速率影响最大。 两种叶型楠木幼树在夏季需要适当遮荫和充足的水分供应,以增加光合速率与有机物积累量。
Abstract:
Determinations were conducted on leaf morphology and photosynthetic properties of 2-year container P. zhennan f. elliptical and P. zhennan f. oblong seedling in 2017 in Qingyuan, Zhejiang province. It was revealed that there was significant difference between two species and even among different layers in leaf area, leaf length, leaf width, and vein number. Net photosynthetic rate of P. zhennan f. elliptical was significantly higher than that of P. zhennan f. oblong. Multiple stepwise regression analysis and path analysis showed that net photosynthetic rate of P. zhennan f. elliptical was mainly influenced by stomatal conductance, intercellular CO2 concentration, leaf vapor pressure deficit, leaf temperature and transpiration rate, especially stomatal conductance. While net photosynthetic rate of P. zhennan f. oblong was by leaf vapor pressure deficit, relative air humidity, atmospheric CO2 concentration, transpiration rate and intercellular CO2 concentration, especially leaf vapor pressure deficit. The experiment resulted that young trees of tested species should be shaded and have sufficient water supply in the summer.

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备注/Memo

备注/Memo:
收稿日期:2018-01-09;修回日期: 2018-04-15 基金项目:宁波市农业重大(重点)项目(2012C10013);浙江省省院合作林业科技项(2017SY19);浙江省农业(林木)新品种选育重大 科技专项(2016C02056-2) 作者简介:吴小林,工程师,从事珍贵树种培育相关工作;E-mail:2925622496@qq.com。通信作者:童再康,博士,教授,从事珍贵树种 遗传育种等研究工作;E-mail:zktong@zafu.edu.cn。
更新日期/Last Update: 2018-08-22