摘要
采用PEG6000模拟干旱胁迫和自然干旱胁迫两种方法,通过测定土壤含水量、叶片电导率、叶片丙二醛含量等指标,分析比较不同品种乌桕幼苗在干旱胁迫下的生理生化变化及耐旱性。结果表明:乌桕幼苗优13和优24耐旱性较强,优23子代幼苗耐旱性最弱。PEG6000模拟干旱胁迫与自然干旱胁迫试验结果基本一致,可以在一定程度上反映正常的干旱胁迫。
The physiological and biochemical characteristics and drought tolerance of different Sapium seedlings under drought stress were analyzed and compared by measuring soil water content, leaf relative conductivity, MDA and other indicators while the PEG6000 solution simulated drought stress and the natural drought stress method were used. The results showed that, No.13 and No. 24 progeny seedlings had strong drought tolerance, the weakest was No.23. The results by PEG6000 simulated drought test were the same as the results by natural drought test, so it could reflect the normal drought stress to a certain extent.
出处
《湖南林业科技》
2013年第3期55-57,共3页
Hunan Forestry Science & Technology
基金
国家林业公益专项项目(201004071)
国家十二五科技支撑项目(2011DAD22B08)
关键词
PEG6000模拟干旱
自然干旱
丙二醛含量
电导率
土壤含水量
乌桕幼苗
PEG6000 simulated drought stress
natural drought
MDA content
relative conductivity
soil water content
Sapium seedlings
