Physiological Response of Creeping Dichondra Herb to Drought Stress

doi:10.11733/j.issn.1007-0435.2014.01.021

›› 2014, Vol. 22 ›› Issue (1): 134-139.DOI: 10.11733/j.issn.1007-0435.2014.01.021

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Physiological Response of Creeping Dichondra Herb to Drought Stress

CHU Xiao-hui¹, DAO Li-qiong², XIE Tang-min¹, CHEN Xing-tao¹, CHEN Gong¹, REN Jian¹, JIANG Hua¹, SHAN Gui-lian¹

1. Pasture Science Department, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China;
2. Yunnan Academy of Grassland and Animal Science, Kunming, Yunnan Province 650212, China

Received:2013-05-30 Revised:2013-11-04 Online:2014-02-15 Published:2014-01-28

马蹄金草坪草对干旱胁迫的生理响应研究

初晓辉¹, 刀丽琼², 谢堂民¹, 陈兴涛¹, 陈功¹, 任健¹, 姜华¹, 单贵莲¹

1. 云南农业大学草业科学系, 云南昆明 650201;
2. 云南省草地动物科学研究院, 云南昆明 650212

通讯作者: 单贵莲，E-mail：shanguilian8203＠126.com
作者简介:初晓辉（1980-），男，云南洱源人，硕士，实验师，主要研究方向为草坪草抗旱机理，E-mail：chuxiaohui@ynau.edu.cn
基金资助:
云南省自然科学基金面上项目（2010CD061）；云南省教育厅科学研究基金重点项目（2011Z033）；云南省教育厅科学研究基金项目（2011Y0477）资助

Abstract

Abstract: The physiological response mechanism of creeping dichondra herb under drought stress for 4, 8, 12, 16 and 20 days was studied in pot experiment with different irrigation grades. Results indicated the contents of leaf relative water and chlorophyll decreased, whereas the contents of MDA, soluble sugar and Pro increased, and the activity of SOD increased first then decreased significantly. The highest change amount was occurred within 12 to 16 days. Therefore, creeping dichondra herb was resistant to drought stress, but it still needed to be watered after drought stress for 12 days, otherwise it would be withered and then died.

Key words: Creeping dichondra herb, Drought stress, Physiological characteristics, Water management

摘要： 为明确马蹄金（Dichondra repens Forst）对干旱胁迫的生理响应机理，采用盆栽法研究不同灌溉梯度下马蹄金草坪草叶片相对含水量、丙二醛、可溶性糖、叶绿素、游离脯氨酸的含量和超氧化物歧化酶活性的变化，探讨马蹄金草坪草的抗旱性问题，为马蹄金草坪的建植和养护管理提供依据。结果表明：干旱胁迫下马蹄金叶片相对含水量和叶绿素含量显著下降，超氧化物歧化酶活性呈先急剧增加，后又急剧下降的变化趋势，丙二醛、可溶性糖和游离脯氨酸的含量显著上升，以胁迫12~16 d下降或上升幅度最大。因此，马蹄金对干旱胁迫表现为一定的耐旱性，但干旱胁迫到一定程度（胁迫12 d左右），需对其进行浇水养护，防止其萎蔫枯黄。

关键词: 马蹄金, 干旱胁迫, 生理特性, 水分管理

CLC Number:

Q945.78

CHU Xiao-hui, DAO Li-qiong, XIE Tang-min, CHEN Xing-tao, CHEN Gong, REN Jian, JIANG Hua, SHAN Gui-lian. Physiological Response of Creeping Dichondra Herb to Drought Stress[J]. , 2014, 22(1): 134-139.

初晓辉, 刀丽琼, 谢堂民, 陈兴涛, 陈功, 任健, 姜华, 单贵莲. 马蹄金草坪草对干旱胁迫的生理响应研究[J]. , 2014, 22(1): 134-139.

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Physiological Response of Creeping Dichondra Herb to Drought Stress

马蹄金草坪草对干旱胁迫的生理响应研究

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