期刊论文

中文

经济林研究

1003-8981

2016

34

3

99-104+186

10.14067/j.cnki.1003-8981.2016.03.014

湖南省教育厅科学研究重点项目“野生观赏植物短梗大参引种驯化与繁育技术研究”（11A130）；

本校为第一机构

为了探索短梗大参对水分胁迫的适应性，提供其引种驯化和园林栽培依据，以2年生短梗大参苗木为试验材料，采用盆栽试验和称重控水法进行土壤水分胁迫（设置土壤相对含水量分别为田间最大持水量的80%、70%、60%和50%，以田间最大持水量100%为对照），研究不同水分胁迫对短梗大参生理生化特征的影响。结果表明：短梗大参叶片相对含水量随着土壤水分胁迫程度加强而降低，最大降幅达34.50%；质膜在水分胁迫下易遭受破坏，在严重水分胁迫下相对质膜透性高达79.85%，丙二醛（MDA）含量增幅达121.07%；渗透调节物质脯氨酸和可溶性糖的含量在水分胁迫下增加，至土壤相对含水量70%时达到最高，分别比对照...

In order to study adaptation of Macropanax rosthornii to water stresses and to provide bases for introduction and plantation as an ornamental plant, using 2-year-old seedlings of M. rosthornii as experiment materials, the effects of water stress on physiological and biochemical characteristics by pot experiment under different water stresses (the relative soil water contents were set up by 80%, 70%, 60%, and 50% of maximum field capacity respectively, and 100% was the control). The results showed that the relative water content in M. rosthornii leaves was declined as the relative soil water co...