铬-铜复合胁迫对凤仙花种子萌发及幼苗生长的影响

Effect of Cr-Cu Composite Stress on Seed Germination and Seedlings Growth of Impatiens balsamina

探讨植物修复重金属污染土壤的可行性,采用水培的方法,研究不同浓度Cr-Cu处理对凤仙花种子萌发、幼苗初期根系活力、叶绿素、超氧化物歧化酶活性的影响。结果表明,Cr-Cu处理对凤仙花种子萌发、幼苗叶绿素含量和超氧化物歧化酶活性均表现出低促高抑效应。一定浓度Cr-Cu处理对凤仙花幼苗的根系活力影响不大,随着浓度的进一步提高,根系活力一直呈下降趋势。

In order to explore the feasibility of using plants to repair heavy metal contaminated soil,the effects of different concentrations of Cr-Cu treatment on seed germination,root activity,chlorophyll and superoxide dismutase activity in early seedling of Impatiens balsamina were studied by hydroponic method.The result indicated that the effect of Cr-Cu treatment on seed germination,chlorophyll content and superoxide dismutase activity showed promoting effect under low concentration and inhibiting effect under high concentration.Cr-Cu treatment with a certain concentration had no significant effect on the root activity of the Impatiens balsamina seedlings.With the further increase of concentration,root activity continuously showed a downward trend.