梯度水分对鱼腥草生长及生理特征的影响

王晓鹏1; 3*; $21; $22; $21; $21

引用本文:	王晓鹏1，3*，叶梅荣1，杨安中2，孙震1，张建1.梯度水分对鱼腥草生长及生理特征的影响[J].广西植物,2012,(1):107-112.[点击复制]
	WANG Xiao Peng1，3*， YE Mei Rong1， YANG An Zhong2， SUN Zhen1， ZHANG Jian1.Moisture gradient affects the growth and physiological characteristics of Houttuynia cordata[J].Guihaia,2012,(1):107-112.[点击复制]

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梯度水分对鱼腥草生长及生理特征的影响
王晓鹏1，3*，叶梅荣1，杨安中2，孙震1，张建1
1.安徽科技学院生命科学学院，安徽凤阳 233100;2.安徽科技学院植物科学学院，安徽 凤阳233100;3.中国科学院植物研究所植被与环境变化重点实验室，北京 100093

摘要:

以不同的施水量，模拟自然生境中林下鱼腥草不同水分条件，设置了8个水分梯度，研究梯度水分对鱼腥草生长和生理特征的影响，以建立鱼腥草生态栽培模式。结果表明：水分的减少或增加均显著减少生物量，中度、重度干旱和水淹明显降低株高和叶面积指数。重度干旱显著提高根冠比。除轻度湿润组外，水分的减少或增加，均显著提高MDA含量；与对照组相比，各干旱处理组SOD和CAT活性和MDA含量明显增强；除脯氨酸含量以外，湿润各处理组CAT、POD、SOD活性和MDA含量均明显低于干旱各处理组；水淹时，CAT、POD、SOD活性、MDA和脯氨酸含量均较低。说明中度干旱或中度湿润已对鱼腥草形成逆境胁迫。栽培鱼腥草的水分条件可以控制在轻度干旱和轻度湿润之间。

关键词: 梯度水分鱼腥草生理特征生态栽培模式

DOI：

分类号:Q948.12

基金项目:

Moisture gradient affects the growth and physiological characteristics of Houttuynia cordata

WANG XiaoPeng1，3*， YE MeiRong1， YANG AnZhong2， SUN Zhen1， ZHANG Jian1

1.College of Life Sciences， Anhui Science and Technology University， Fengyang 233100， China;2.College of Plant Sciences， Anhui Science and Technology University， Fengyang 233100， China;3.State Key Laboratory of Vegetation and Environmental Change， Institute of Botany， the Chinese Academy of Sciences， Beijing 100093， China

Abstract:

This study aims to determine effects of moisture gradient on the growth and physiological characteristics of Houttuynia cordata for developing an ecological cultivation pattern. Eight kinds of water treatments were conducted to simulate the dynamic change of soil water moisture in the natural habitat of forest. The results showed that biomass was significantly reduced by decrease or increase of moisture as compared to the control；plant height and LAI were inhibited under the condition of heavy drought，moderate drought and waterlogging；heavy drought significantly elevated the root to shoot ratio；decrease or increase of moisture all increased the content of MDA except light moisture group；compared with the control，the activity of SOD and CAT，as well as content of MDA were significantly increased under the condition of drought；the activity of CAT，POD，SOD and the content of MDA of moisture group were respectively lower than those of drought group except for content of proline. In particular，the activity of CAT，POD and SOD，the content of MDA and proline of waterlogging group were generally lower than those of others. H.cordata had been stressed by the condition of moderate drought or moderate moisture. In summary，light drought and light moist conditions were favorable for the cultivation of H.cordata.

Key words: gradient moisture Houttuynia cordata physiological characteristic ecological cultivation pattern