[1]陈剑成,徐雯,祁潇勇,等.低温胁迫对凹叶厚朴光合特性和相关生理指标的影响[J].北方园艺,2017,41(16):147-153.[doi:10.11937/bfyy.20164937]
　CHEN Jiancheng,XU Wen,QI Xiaoyong,et al.Effect of Low Temperature Stress on Photosynthesis Physiology of Magnolia officinalis subsp.biloba[J].Northern Horticulture,2017,41(16):147-153.[doi:10.11937/bfyy.20164937]
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低温胁迫对凹叶厚朴光合特性和相关生理指标的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第41卷 期数: 2017年16 页码: 147-153 栏目: 出版日期: 2017-08-30
Title:
Effect of Low Temperature Stress on Photosynthesis Physiology of Magnolia officinalis subsp.biloba
作者:
陈剑成1; 徐雯1; 祁潇勇1; 何天友2; 郑郁善1; 陈礼光1
（1.福建农林大学 林学院，福建 福州 350002；2.福建农林大学 艺术学院园林学院，福建 福州 350002）
Author(s):
CHEN Jiancheng1; XU Wen1; QI Xiaoyong1; HE Tianyou2; ZHENG Yushan1; CHEN Liguang1
(1.College of Forestry，Fujian Agriculture and Forestry University，Fuzhou，Fujian 350002;2.College of Art & Landscape Architecture，Fujian Agriculture and Forestry University，Fuzhou，Fujian 350002)
关键词:
凹叶厚朴; 低温胁迫; 叶绿素; 光合特性; 生理指标
Keywords:
Magnolia officinalis; low temperature stress; chlorophyll; photosynthesis and photosynthetic characteristics; physiological index
DOI:
10.11937/bfyy.20164937
文献标志码:
A
摘要:
以2年生凹叶厚朴幼苗为试材，研究了在不同低温胁迫（-5、0、5、10、15 ℃，以25 ℃为对照）下凹叶厚朴生理指标和光合特性的变化。结果表明：随着胁迫温度降低，凹叶厚朴幼苗叶绿素含量下降，净光合速率（Pn）、气孔导度（Gs）、蒸腾速率（Tr）逐步降低，光合PSⅡ最大光化学效率(Fv/Fm)、潜在光化学效率(Fv/Fo)、表观电子传递速率（ETR）、光合量子产额（Yield）、光化学淬灭系数(qP)总体呈现递减趋势，而胞间CO2浓度（Ci）、丙二醛（MDA）含量、细胞质膜透性、非光化学淬灭系数(NPQ)呈上升趋势，质膜在-5 ℃时受损最严重，大量离子外渗。低温使叶绿素显著降低，PSⅡ反应中心受损，对凹叶厚朴幼苗产生显著光抑制，导致光合作用能力降低。
Abstract:
The 2-year-old Magnolia officinalis was used as test material,the photosynthetic characteristics of -5,0,5,10,15,25 ℃(CK) were studied by artificial low temperature stress.The results showed that the net photosynthetic rate (Pn)，stomatal conductance (Gs) and transpiration rate (Tr) decreased gradually with the decrease of stress temperature，the decrease of chlorophyll content.The highest photo-chemical efficiency (Fv/Fm)，potential photo-chemical efficiency (Fv/Fo)，apparent electron transport rate (ETR)，photosynthetic quantum yield (Yield) and photo-chemical quenching coefficient (qP) of photosynthetic PSII showed a decreasing trend.Ci，malondialdehyde(MDA) content，cytoplasmic membrane permeability and non-photo-chemical quenching coefficient (NPQ) increased，then plasma membrane was the most serious damage at -5 ℃，a large number of ion percolated.Low temperature of chlorophyll significantly reduced，PSII reaction center damage，the leaves of Magnolia officinalis seedlings significantly inhibited light，resulting in reduced photosynthetic capacity.

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备注/Memo

第一作者简介：陈剑成（1989-），男，硕士研究生，研究方向为药用植物的分子生物学与基因工程。E-mail:cjcheng15@139.com. 责任作者：陈礼光（1974-），男，硕士，副教授，现主要从事药用植物栽培与森林培育等研究工作。E-mail:fjclg@126.com. 基金项目：国家科技支撑计划资助项目(2011BAI01B06)；福建省科技重点资助项目（2009Y0003）。收稿日期：2017-02-28

更新日期/Last Update: 2017-08-31