[1]薛欢,朱梅,房海灵*,等.光周期对金银花叶片光合特性和抗氧化酶活性的影响[J].江苏林业科技,2018,45(04):13-16.[doi:10.3969/j.issn.1001-7380.2018.04.003]
　Xue Huan,Zhu Mei,Fang Hailing*,et al.Effects of photoperiod on photosynthesis and antioxidative enzyme activities of Lonicera japonica[J].Journal of Jiangsu Forestry Science &Technology,2018,45(04):13-16.[doi:10.3969/j.issn.1001-7380.2018.04.003]
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光周期对金银花叶片光合特性和抗氧化酶活性的影响()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第45卷
期数:
2018年04期
页码:
13-16
栏目:
试验研究
出版日期:
2018-08-15

文章信息/Info

Title:
Effects of photoperiod on photosynthesis and antioxidative enzyme activities of Lonicera japonica
文章编号:
1001-7380（2018）04-0013-04
作者:
薛欢1; 朱梅2; 房海灵3*; 梁呈元3
1.江苏省森林资源监测中心,江苏南京210036;
2.江苏省林业局,江苏南京210036;
3. 江苏省中国科学院植物研究所,江苏南京210014
Author(s):
Xue Huan1;  Zhu Mei2;  Fang Hailing3*;  Liang Chengyuan3
1. Centre for Forest Resources Monitoring of Jiangsu Province, Nanjing 210036, China;
2. Jiangsu Province Administration of Forestry, Nanjing 210036, China;
3. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
关键词:
光周期; 金银花; 光合作用; 抗氧化酶
Keywords:
Photoperiod;  Lonicera japonica;  Photosynthesis;  Antioxidative enzyme
分类号:
Q554；Q945.11；Q945.43；S567.7+9
DOI:
10.3969/j.issn.1001-7380.2018.04.003
文献标志码:
A
摘要:
以金银花1年生扦插苗为材料,采用人工遮光的方式研究不同光周期处理(光照时长分别为7, 10, 13 h)对金银花叶片中光合色素、光合参数及抗氧化酶活性的影响,为金银花人工栽培中光照时长的调控提供理论基础。结果表明:与对照(Ph13)相比,短日照处理(Ph7和Ph10)可引起金银花叶片中叶绿素a、叶绿素b和类胡萝卜素含量随光照时长的缩短而减少;同时叶片中净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)和胞间CO2浓度(Ci)等光合参数降低,气孔限制值(Ls)增大。抗氧化酶包括超氧化物歧化酶(SOD)、过氧化氢酶(CAT)和过氧化物酶(POD)活性随光照时长的减少而升高，且随着处理时间的延长呈先升后降。综合分析表明,于金银花花期进行短日照处理不利于植物生长,在一定程度上抑制了叶片中光合色素的合成,进而影响植株光合作用,同时诱导叶片抗氧化酶活性的升高以增强其氧自由基的清除能力。
Abstract:
The effect of different photoperiod treatments (7 h, 10 h and 13 h light ) on photosynthetic pigments, photosynthetic parameters, and antioxidant enzyme activities of Lonicera japonica (honeysuckle) were studied by artificial shading method, which will provide the theoretical basis for artificial light regulation of this plant species. The results showed that short-day light treatments could reduce the content of chlorophyll a, chlorophyll b and carotenoids in the leaves, decrease the photosynthetic parameters, such as photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr) and intercellular CO2concentration (Ci), and increase stomatal limit value (Ls). The activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) increased with the decrease of illumination time. With the prolongation of treatment time, the activities of SOD, CAT and POD increased first and then decreased. The comprehensive analysis showed that short daylight treatment at the flowering phase was not conducive to plant growth, which inhibited the photosynthesis of leaves to certain an extent, and induced the activity of antioxidant enzymes to enhance the scavenging ability of oxygen free radicals.

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备注/Memo

备注/Memo:
收稿日期：2018-06-06;修回日期：2018-06-21
基金项目：江苏省自然科学基金项目“光照对金银花中绿原酸和木犀草苷合成积累的影响及调控机制研究”(BK20160603)
作者简介：薛欢(1984- ),女,江苏启东人,工程师,大学本科毕业。主要从事林业人才培训和科技管理等工作。
*通信作者：房海灵(1983- ),女,山西晋中人,副研究员,博士。主要从事药用植物规范化种植及评价研究。E-mail:fanghailing2013@163.com。
更新日期/Last Update: 2018-09-13