[1]杨升,王金旺,刘星,等.NaCl 胁迫对3 个彩色树种的盐害及Na+, K+, Ca2+器官分布的影响[J].浙江林业科技,2019,39(06):25-31.
 YANG Sheng,WANG Jin-wang,LIU Xing,et al.Effect of NaCl Stress on Injury and Na+, K+ and Ca2+ Distribution in Three Color-leaved Tree Species[J].Journal of Zhejiang Forestry Science and Technology,2019,39(06):25-31.
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NaCl 胁迫对3 个彩色树种的盐害及Na+, K+, Ca2+器官分布的影响()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
39
期数:
2019年06期
页码:
25-31
栏目:
出版日期:
2019-12-31

文章信息/Info

Title:
Effect of NaCl Stress on Injury and Na+, K+ and Ca2+ Distribution in Three Color-leaved Tree Species
文章编号:
1001-3776(2019)06-0025-07
作者:
杨升王金旺刘星李效文潘凤跃陈秋夏
浙江省亚热带作物研究所,浙江温州 325005
Author(s):
YANG ShengWANG Jin-wangLIU XingLI Xiao-wenPAN Feng-yueCHEN Qiu-xia
Zhejiang Institute of Subtropical Crops, Wenzhou 325005, China
关键词:
彩色树种耐盐性NaCl胁迫离子平衡
Keywords:
color-leaved tree species salt-tolerance NaCl stress ion balance
分类号:
S713
文献标志码:
A
摘要:
为了研究彩色树种在 NaCl胁迫下矿质离子的响应机制,采用 0,85,170,340,510 mmol?L-1五种不同浓度 NaCl溶液对金叶复叶槭 Acer negundo ‘Aurea’,紫叶合欢 Albizia spp.和金叶皂荚 Gleditsia triacaanthos ‘Sunburst’ 2年生苗进行胁迫处理,50天后,根据其表型评判各树种盐害等级,并测定其根、茎和叶中 Na+,K+,Ca2+含量,计算各组织的 K+/Na+和 Ca2+/Na+值。结果表明,在 340 mmol?L-1 NaCl浓度下,金叶复叶槭绝大部分叶片边缘焦枯,盐害等级为 3,紫叶合欢和金叶皂荚部分叶片焦枯,盐害等级为 2,而 510 mmol?L-1NaCl浓度下,紫叶合欢盐害等级为 4级,而金叶皂荚的盐害等级为 3级;3个树种根、茎和叶中 Na+含量均随着盐浓度增加而增加,而 K+含量和 K+/Na+均显著下降(P<0.05),并且金叶皂荚降幅少于金叶复叶槭和紫叶合欢; Ca2+含量均随着盐浓度增加呈下降趋势,根和叶的 Ca2+/Na+在金叶皂荚中的降幅小于金叶复叶槭和紫叶合欢。因此,在 NaCl胁迫下,金叶皂荚盐害等级低,归因于其具有较强的拒 Na+和保留 K+,Ca2+能力,从而维持体内 K+/Na+,Ca2+/Na+平衡。
Abstract:
Experiments were carried out on NaCl stress with 0, 85, 170, 340, 510 mmol?L-1on 3-year color-leaved tree species namely Acer negundo ‘Aurea’, Albizia spp., Gleditsia triacanthos ‘Sunburst’ in 2016. Content of Na+, K+,Ca2+, value of K+/Na+, Ca2+/Na+of root, stem and leaf and injuries of treated seedlings were measured 50 days later. The results demonstrated that A. negundo ‘Aurea’ showed injury of class 3, A. spp. and G. triacanthos ‘Sunburst’ class 2 under treatment of 340 mmol?L-1 NaCl, while under treatment of 510 mmol?L-1 NaCl, A. negundo ‘Aurea’ and A. spp. class 4, G. triacanthos ‘Sunburst’ class 3. The content of Na+ in the tested organs of three species increased with NaCl concentration, but the content of K+ and value of K+/Na+ decreased significantly. The content of Ca2+ had negative relation with the increase of NaCl concentration, and Ca2+/Na+ of G. triacanthos ‘Sunburst’ in root and leaf showed less decline. The experiment resulted that salt damage of G. tricanthos ‘Sunburst’ was the lowest under NaCl stress.

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备注/Memo

备注/Memo:
收稿日期:2019-05-09;修回日期:2019-09-22基金项目:中央财政林业科技推广示范项目 “楠溪江彩叶健康林营建技术推广与示范 ”(2016-TS-08);院院合作项目 “海涂围垦区生态修复及耐盐桑树品种选育 ”(10102000316LL0005F);所科研启动基金项目 “耐盐碱彩色树种选育及快繁技术研究 ”(2014Y001)作者简介:杨升,助理研究员,从事植物耐盐生理生态学研究; E-mail:271475095@qq.com。通信作者:陈秋夏,博士,研究员,从事森林生态学研究; E-mail:yzscqx@163.com。
更新日期/Last Update: 2019-12-30