[1]李 勇,葛晓敏,唐罗忠*,等.盐胁迫下1年生麻栎实生苗的生理变化[J].江苏林业科技,2015,42(04):17-21.[doi:10.3969/j.issn.1001-7380.2015.04.005]
　LI Yong,GE Xiao-min,TANG Luo-zhong*,et al.Physiological change of Quercus acutissima seedlings under the salt stress[J].Journal of Jiangsu Forestry Science &Technology,2015,42(04):17-21.[doi:10.3969/j.issn.1001-7380.2015.04.005]
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盐胁迫下1年生麻栎实生苗的生理变化()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第42卷
期数:
2015年04期
页码:
17-21
栏目:
试验研究
出版日期:
2015-08-30

文章信息/Info

Title:
Physiological change of Quercus acutissima seedlings under the salt stress
文章编号:
1001-7380(2015)04-0017-05
作者:
李 勇; 葛晓敏; 唐罗忠*; 黄开栋; 郑萌芳
南方现代林业协同创新中心,南京林业大学,江苏 南京 210037
Author(s):
LI Yong;  GE Xiao-min;  TANG Luo-zhong*;  HUANG Kai-dong;  ZHENG Meng-fang
Co-Innovation Center for the Sustainable Forestry in Southern China,Nanjing Forestry University, Nanjing 210037, China
关键词:
麻栎;  苗木;  盐胁迫;  生长;  叶绿素;  光合速率;  相对电导率
Keywords:
Quercus acutissima;  Seedlings;  Salt stress;  Growth;  Chlorophyll;  Photosynthetic rate;  Relative electrical conductivity
分类号:
S792.181
DOI:
10.3969/j.issn.1001-7380.2015.04.005
文献标志码:
A
摘要:
采用室内盆栽法对1年生麻栎实生苗进行了盐(NaCl)胁迫试验,结果显示,土壤含盐量为0.4%和0.5%时,苗木叶片边缘会出现明显的失绿现象。高含量的盐处理会明显抑制麻栎新梢生长。土壤含盐量高于0.3%时,苗木叶片的含水量、叶绿素含量和光合速率均显著下降,而相对电导率显著升高。土壤含盐量较高时,苗木嫩叶中的N含量有所下降。苗木细根中的K含量会随着土壤含盐量的提高而降低,叶片中的K含量却呈相反趋势。当土壤含盐量低于0.3%时,苗木叶片中的Na含量处于较低水平,但高于0.4%时,叶片中的Na含量会显著升高; 细根中的Na含量随着土壤含盐量的升高而升高。综合分析认为,土壤含盐量低于0.2%时,麻栎苗木能够正常生长; 土壤含盐量高于0.3%时,麻栎苗木的生理会受到明显影响。
Abstract:
Pot experiment in greenhouse was committed to investigate the effects of salt(NaCl)stress on the growth andphysiological trait of Quercus acutissima seedlings. The results showed that the leaves margin of seedlings appeared a significant chlorosis with 0.4% and 0.5% salt contents in soil. Salt high content treatment decreased the nitrogen content of tender leaves, and obviously inhibited the shoot growth. The water content, chlorophyll content and photosynthetic rate of the leaves were significantly decreased with over 0.3% edaphic salt content, in contrast, the relative electrical conductivity of the leaves increased significantly. Furthermore, potassium content of fine roots decreased with the increase of salt content in soil, but an opposite tendency was showed in the leaves. With less than 0.3% salt content, sodium content of the leaves was at a low level while it was significantly increased with over 0.4% salt content in soil. However, sodium content in the fine roots increased with the increasing of salt content. Integrated analysis indicated that the Quercus acutissima seedlings could grow normally with less than 0.2% salt content in soil. The growth and physiological trait were affected by over 0.3% of salt content.

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备注/Memo

备注/Memo:
收稿日期:2015-06-24;修回日期:2015-7-06
基金项目：国家自然科学基金项目“池杉形成膝根的生理机制及其功能研究”(31170566);教育部高等学校博士学科点专项科研基金“杨树对土壤重金属污染的净化能力研究及高富集品种筛选”(201332041100011)；江苏高校优势学科建设工程资助项目(PAPD)
作者简介：李 勇(1991-)，男，安徽阜阳人，硕士研究生，主要从事森林培育学研究。E-mail:107640441@qq.com。
*通信作者：唐罗忠(1967-)，男，江苏金坛人，教授，主要从事森林培育与森林生态学研究。E-mail:luozhongtang@njfu.edu.cn。
更新日期/Last Update: 2015-09-28