[1]代松家,魏晶晶,兰小中.喜马拉雅紫茉莉对干旱的生理生态响应[J].北方园艺,2015,39(08):152-156.[doi:10.11937/bfyy.201508040]
　DAI Song-jia,WEI Jing-jing,LAN Xiao-zhong.Physiological and Ecological Responses of Mirabilis himalaica to Drought Stress[J].Northern Horticulture,2015,39(08):152-156.[doi:10.11937/bfyy.201508040]
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喜马拉雅紫茉莉对干旱的生理生态响应

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第39卷 期数: 2015年08 页码: 152-156 栏目: 出版日期: 2015-04-30
Title:
Physiological and Ecological Responses of Mirabilis himalaica to Drought Stress
文章编号:
1001-0009（2015）08-0152-05
作者:
代松家1; 魏晶晶1; 兰小中2
(1.西藏大学农牧学院，西藏高原生态研究所，西藏 林芝 860000；2.西藏大学农牧学院，西南大学药用植物联合研发中心，西藏 林芝 860000)
Author(s):
DAI Song-jia1; WEI Jing-jing1; LAN Xiao-zhong2
(1.Institute of Tibetan Plateau Ecology，Agricultural and Animal Husbandry College of Tibet University，Nyingchi，Tibet 860000;2.TAAHC-SWU Medicinal Plants Joint Research and Development Centre,Agricultural and Animal Husbandry College of Tibet University,Nyingchi，Tibet 860000)
关键词:
喜马拉雅紫茉莉; 干旱胁迫; 渗透调节; 保护酶; 膜脂质过氧化
Keywords:
Mirabilis himalaica (Edegw.) Heim.; drought stress; osmotic; protective enzyme; membrane lipid peroxidation
分类号:
S 685.16
DOI:
10.11937/bfyy.201508040
文献标志码:
A
摘要:
以喜马拉雅紫茉莉1年生成年苗为试材，采用盆栽试验和自然干燥的方法，研究了喜马拉雅紫茉莉对土壤干旱胁迫的生理生态响应过程。结果表明：随着干旱程度的加剧，喜马拉雅紫茉莉叶片相对含水量（LRWC）及叶绿素（Chl）含量在中轻度干旱胁迫下变化幅度不大，在土壤含水量为8.88%~9.58%（28 d）时，开始发生显著变化；脯氨酸和可溶性糖的含量随土壤相对含水量降低而增加；喜马拉雅紫茉莉通过SOD和POD的协同作用以清除体内氧自由基，达到适应和抵御干旱逆境的目的，并且POD活性作用大于SOD活性作用。喜马拉雅紫茉莉可通过渗透调节、抗氧化酶活性升高等途径增强对干旱环境的耐受性和适应性；喜马拉雅紫茉莉有较强的抗旱性，干旱胁迫28 d（土壤含水量10%左右）为耐受极限。
Abstract:
Tanking one-year-old seedling of Mirabilis himalaica (Edegw.) Heim as material，using pot experiment and natural drying method，physiological and ecological response of soil drought stress to Mirabilis himalaica (Edegw.) Heim.was studied.The results showed that，with the drought degree intensified，the change of the Mirabilis himalaica (Edegw.) Heim.leaf relative water content (LRWC) and the content of chlorophyll (chlorophyll) under the mild drought stress change was not big，under the soil moisture content 8.88%-9.58% (28 d)，began to change significantly;The content of proline and soluble sugar increased with the decreasing RWC;The Mirabilis himalaica (Edegw.) Heim.through the synergy of SOD and POD to removing oxygen free radicals in the body，achieve the purpose of resist drought adversity，POD activity function was greater than the SOD activity.Through the way such as osmotic adjustment and activities of antioxidant enzymes increasing,Mirabilis himalaica (Edegw.) Heim.enhanced resistance and adaptability to drought environment;The Mirabilis himalaica (Edegw.) Heim.had strong drought resistance，drought stress of 28 d (soil moisture content 10%) was the tolerance limit.

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备注/Memo

第一作者简介：代松家(1983-)，男，硕士研究生，研究方向为高原(高山)植物生理生态。E-mail:daisongjia@163.com.

责任作者：兰小中（1973-），男，硕士，教授，研究方向为药用植物资源及药用植物生理与分子生物学。E-mail:lanxiaozhong@163.com.
基金项目：西藏自治区中藏药资源普查资助项目（20120716-540000）。

更新日期/Last Update: 2015-08-07