摘要
目的:研究春季不同时期持续干旱和饱和水分处理对川芎叶片水分状况、质膜透性和保护酶活性等生理生化特性的影响。方法:采用盆栽法,测定川芎叶片各生理生化指标。结果:干旱胁迫下,随着处理天数的增加,土壤相对含水量(SRWC)和叶片相对含水量(RWC)持续下降,丙二醛(MDA)含量和质膜相对透性明显增加,超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活性呈现先上升后下降的趋势,过氧化物酶(POD)活性呈现上升趋势。饱和水分处理对上述指标的影响趋势与干旱处理大体一致,但影响的程度较小。结论:长时间的干旱和饱和水分处理均对川芎造成伤害,干旱处理的伤害程度要高于饱和水分处理,本试验得出土壤相对含水量为60%左右最适宜川芎生长。
Objective:To study the effects of continuous dry-stress and full-water treatments in different periods of spring on the water condition,permeability of plasma membrane and protective enzymes activities in leaves of Ligusticum chuanxiong. Method:Pot cultivation method was applied and physical and biochemical indexes were measured.Result:Under dry-stress treatment the soil relative water content (SRWC) and the relative water content (RWC) in leaves decreased gradually with the days of treatment increased,the ...
出处
《中国中药杂志》
CAS
CSCD
北大核心
2009年第2期132-137,共6页
China Journal of Chinese Materia Medica
基金
国家科技支撑计划项目(2007BAD89B15)
四川省科技厅攻关招标项目(2006Z08-091)
关键词
水分胁迫
川芎
叶片相对含水量
质膜透性
保护性酶
water-stress
Ligusticum chuanxiong
soil relative water content
membrane electrolyte leakage
protective enzymes
