[1]程红岩,袁旻舒,沈玉芳.盐胁迫下松塔景天的生理响应及适应性[J].北方园艺,2017,41(19):121-126.[doi:10.11937/bfyy.20170132]
　CHENG Hongyan,YUAN Minshu,SHEN Yufang.Physiological Responses and Adaptability of Sedum nicaeense Under Saline Stress[J].Northern Horticulture,2017,41(19):121-126.[doi:10.11937/bfyy.20170132]
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盐胁迫下松塔景天的生理响应及适应性

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第41卷 期数: 2017年19 页码: 121-126 栏目: 出版日期: 2017-10-15
Title:
Physiological Responses and Adaptability of Sedum nicaeense Under Saline Stress
作者:
程红岩1; 袁旻舒2; 沈玉芳1
1.西北农林科技大学 资源环境学院，黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西 杨凌 712100；2.西北农林科技大学 林学院，陕西 杨凌 712100
Author(s):
CHENG Hongyan1; YUAN Minshu2; SHEN Yufang1
1.College of Resource and Environment,Northwest A & F University/State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Yangling,Shaanxi 712100；2.College of Forestry,Northwest A & F University,Yangling,Shaanxi 712100
关键词:
盐胁迫; 松塔景天; 生理特性
Keywords:
saline stress; Sedum nicaeense All.; physical characteristics
DOI:
10.11937/bfyy.20170132
文献标志码:
A
摘要:
以松塔景天幼苗为试材，采用不同浓度NaCl溶液（0、2.5、3.5、4.5、5.5、6.5、7.5、8.5、9.5 mg?g-1）对其定期进行处理，动态测定其叶片脯氨酸含量、丙二醛含量、叶绿素含量、叶面积、叶片含水量、根冠比和叶绿素荧光参数（Fv/Fm）等指标，评估松塔景天幼苗的耐盐能力，探索松塔景天在盐胁迫下的生理响应和适应能力，以便为扩大其在轻度盐碱地的绿化面积奠定理论基础。结果表明：NaCl浓度低于8.5 mg?g-1时，有利于松塔景天幼苗生长，其中NaCl浓度在3.5 mg?g-1时，最适合松塔景天幼苗生长。当NaCl浓度高于8.5 mg?g-1时，就会抑制其正常生长。该试验可为盐渍化地区松塔景天的推广提供指导。
Abstract:
In order to lay a theoretical foundation for enlarging its green area in mild salinization,the physiological response and adaptability of Sedum nicaeense under salt stress was explored.In this study,seedlings of Sedum nicaeense were treated with different concentrations of sodium chloride (0,2.5,3.5,4.5,5.5,6.5,7.5,8.5,9.5 mg?g-1),respectively.The free proline content,malondialdehye content,chlorophyll content,leaf area,leaf water content,root and shoot ratio and chlorophyll fluorescence parameter(Fv/Fm) were measured to evaluate the salt tolerance of Sedum nicaeense seedlings.The results showed that when the concentrations of sodium chloride was less than 8.5 mg?g-1,it was conducive to the growth of seedlings of Sedum nicaeense,especially when the concentrations of sodium chloride was 3.5 mg?g-1,Sedum nicaeense were in the best growth state.Once concentration of sodium chloride was higher than 8.5 mg?g-1,it could had serious effects on their normal growth,which would be of great significance for the promotion of Sedum nicaeense in salinization area.

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备注/Memo

第一作者简介：程红岩（1991-），男，硕士研究生，研究方向为植物营养。E-mail：752452579@qq.com.

责任作者：沈玉芳（1975-），女，博士，副研究员，硕士生导师，现主要从事植物营养与旱地农业等研究工作。E-mail：clg0601@163.com.
基金项目：国家自然科学基金资助项目（51279197）。
收稿日期：2017-04-11

更新日期/Last Update: 2017-10-12