摘要
以2年生半高丛越橘圣云为试验材料,用分析纯硫酸和硝酸配制4种不同pH的模拟酸雨水溶液对越橘进行喷淋,研究其在不同pH和不同处理时间模拟酸雨对其生理特性的影响。结果表明,越橘在酸雨胁迫处理时,随着胁迫程度加重和时间延长,叶绿素含量与SOD活性呈下降趋势,但pH 5.5处理所有时期SOD活性均高于对照;POD活性呈上升趋势,pH 5.5和pH 4.5处理变化幅度不大;叶片膜质过氧化产物MDA和可溶性糖含量上升;解除胁迫后,各项生理指标均能恢复至对照水平,轻度和中度胁迫提高了植物的生理活性,说明越橘对酸雨有较强的抵抗力。
The effect of simulated acid rain on blueberry leaf physiological characteristics was studied by using two-year old half-high blueberry St.Cloud and leaf spray four levels of pH simulated acid rain,which was prepared by analytically pure sulfate and nitric acid.The results showed that leaf chlorophyll content and SOD activity were decreased with the acid rain stress levels increasing and time extension,but leaf SOD activity was higher than that of CK in all periods at pH 5.5 treatment;leaf POD activity was increased with the acid rain stress levels increasing and time extension,but it was changed slightly at pH 5.5 and pH 4.5 treatment;leaf MDA and soluble sugar content were increased with the acid rain stress levels increasing and time extension.However,all the above leaf physiological characteristics recovered rapidly to the control level after simulated acid rain removing.Slight and mediun acid rain stress increased leaf physiological activity,which indcated that blueberry plants had the ability of strong acid rain resistant.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2010年第2期39-43,共5页
Journal of Northeast Agricultural University
基金
公益性行业科研专项(nyhyzx07-028
2006-G25)
吉林省科技厅重点项目(20075013)
关键词
模拟酸雨
胁迫
越橘
生理特性
simulated acid rain
stress
blueberry
physiological characteristics
