利用不同浓度Zn处理菊芋幼苗,研究Zn在菊芋幼苗生长期间,对其幼叶中过氧化物酶(POD)同工酶、株高、叶绿素含量度细胞膜通透性的影响.结果表明:低浓度的Zn(0～5 mg/L)对菊芋幼苗的生长具有促进作用；随着Zn浓度的不断增加,菊芋幼叶中诱导型POD活性增强,增加了2种同工酶的表达；菊芋叶片中叶绿素含量呈下降趋势,细胞膜透性则持续上升.%Helianthus tuberosus seedlings were treated by Zn with different concentrations, the effects of Zn on the peroxidase isoenzymes, plant height, chlorophyll content and membrane permeability in young-leaves were researched. The results showed that low concentration Zn (0-5 mg/L) can stimulate the growth of Heliaruhus tuberosus seedlings. With the increase of Zn concentration, the activity of induced peroxi-dase isoenzymes in young-leaves and the expression of two kinds of isoenzymes increased, the chlorophyll content had decline trend, the membrane permeability increased continuously.
展开▼
