[1]张福,于锡宏,李扬丹,等.温度对老山芹光合光响应特征曲线的影响[J].北方园艺,2018,42(19):53-58.[doi:10.11937/bfyy.20180543]
　ZHANG Fu,YU Xihong,LI Yangdan,et al.Effects of Different Temperature on the Light-response Characteristics of Heracleum moellendorffii Hance Leaf Photosynthesis[J].Northern Horticulture,2018,42(19):53-58.[doi:10.11937/bfyy.20180543]
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温度对老山芹光合光响应特征曲线的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第42卷 期数: 2018年19 页码: 53-58 栏目: 出版日期: 2018-10-10
Title:
Effects of Different Temperature on the Light-response Characteristics of Heracleum moellendorffii Hance Leaf Photosynthesis
作者:
张福; 于锡宏; 李扬丹; 惠爱斌; 程瑶; 蒋欣梅
（东北农业大学 农业部东北地区园艺作物生物学与种质创制重点实验室,黑龙江 哈尔滨 150030）
Author(s):
ZHANG Fu; YU Xihong; LI Yangdan; HUI Aibin; CHENG Yao; JIANG Xinmei
(Key Laboratory of Biology and Genetic Improvement of Horticultural Crops,Northeast Region,Ministry of Agriculture,Northeast Agricultural University,Harbin,Heilongjiang 150030)
关键词:
温度; 老山芹; 光合作用; 光响应特征
Keywords:
temperature; Heracleum moellendorffii Hance; photosynthesis; light response characteristics
DOI:
10.11937/bfyy.20180543
文献标志码:
A
摘要:
以当年生老山芹种苗为试材，采用LI-6400XT 便携式光合测定仪分别测定4个日均温度梯度（15、20、25、30 ℃）下老山芹的光合作用参数，研究了日均温度变化对老山芹光合光响应特征曲线的影响。结果表明：随着日均温度的升高，净光合速率、最大净光合速率、初始斜率和水分利用效率呈先升高后降低的趋势，净光合速率和最大净光合速率在20 ℃下达最大值，初始斜率和水分利用效率在25 ℃时达到最大值，最大净光合速率略低于20 ℃；光饱和点、光补偿点和暗呼吸速率绝对值随日均温度升高呈升高-下降-升高的趋势，但30 ℃下光饱和点有所下降；蒸腾速率和气孔导度随温度的升高而增强，在30 ℃下蒸腾速率和气孔导度最高，但水分利用效率最低。表明，当日均温度在20~25 ℃时，环境PAR控制在1 000 μmol·m-2·s-1以下为宜；当日均温度高于25 ℃时，环境PAR控制在较高范围会有利于老山芹的光合积累。
Abstract:
This photosynthetic light-response characteristics of Heracleum moellendorffii Hance leaves at their initial ripening stage at 15 ℃,20 ℃,25 ℃,and 30 ℃ were studied by using LI-6400 photosynthesis determination system．With increasing daily mean temperature，the net photosynthetic rate (Pn),maximum net photosynthetic rate (Pnmax),initial slope (α),and water use efficiency (WUE) decreased after an initial increase,with the maximum of the net photosynthetic rate (Pn) and maximum net photosynthetic rate (Pnmax) at 20 ℃,while the maximum of the initial slope (α) and water use efficiency (WUE) at 25 ℃．The light compensation point (LCP)，the light saturation point (LSP) and dark respiration rate (Rd) had a variation of ‘up-down-up’ with increasing daily mean temperature，but the light saturation point (LSP) decreased slightly at 30 ℃．The transpiration rate(Tr) and stomatal conductance (Gs) increased with increasing daily mean temperature and the maximum of them at 30 ℃，but the miximum of water use efficiency (WUE).It was suggested that the most favorite daily mean temperature for Heracleum moellendorffii Hance photosynthesis was 25 ℃.

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备注/Memo

第一作者简介：张福（1990-），男，黑龙江哈尔滨人，硕士研究生，研究方向为蔬菜栽培与生理。E-mail：zhf090208@163.com.责任作者：于锡宏（1965-），男，黑龙江尚志人，博士，教授，博士生导师，现主要从事蔬菜栽培与生理等研究工作。E-mail：yxh100@sohu.com.基金项目：国家重点研发计划子课题资助项目（2016YFC050030706）。收稿日期：2018-03-19

更新日期/Last Update: 2018-11-06