镧对铅胁迫下绿豆种子萌发和幼苗生长的缓解作用
Relaxation Effects of Lanthanum on the Seed Germination and Seedling Growth of Vigna radiata under Lead Stress
陈细香 1郑巧艺 2邓倩 2吴文杰2
作者信息
- 1. 泉州师范学院化学与生命科学学院,福建泉州362000;泉州师范学院分子生物与药物化学,福建省高校重点实验室,福建泉州362000
- 2. 泉州师范学院化学与生命科学学院,福建泉州362000
- 折叠
摘要
[目的]研究不同浓度镧(La)对铅(Pb)胁迫下绿豆种子萌发和幼苗生长的作用.[方法]绿豆中绿1号为试材,以蒸馏水为对照(CK),研究在15 mg/L Pb胁迫下,0、5、15、25、50、100 mg/L La对绿豆种子的萌发率、发芽势、发芽率、发芽指数和幼苗根长、茎长及叶绿素和VC含量的影响.[结果]低浓度(5 ～ 15 mg/L)的La能够缓解Pb胁迫对绿豆幼苗的毒害,随着La浓度的增加,缓解效果越好;当La浓度大于15 mg/L时,对Pb的缓解作用逐渐减弱,当La浓度为100 mg/L时与Pb协同迫害绿豆幼苗的生长.[结论]15 mg/L La对15 in/L Pb胁迫下绿豆种子的毒性缓解效果最佳.
Abstract
[Objective] To research the relaxation effects of different concentrations of lanthanum on the seed germination and seedling growth of Vigna radiata under lead stress.[Method] By using V.radiata Zhonglv 1 as the research material,we detected the effects of 0,5,15,25,50 and 100 mg/L lanthanum on the chlorophyll content,Vc content,seed germination rate,germination vigor,germination index,seedling root length and stem length,with distilled water as the control (CK).[Result] Lanthanum at low concentration (5-15 mg/L) relaxed the toxic effects of lead stress on V.radiata seedlings.With the increase of lanthanum concentration,relaxation effects became better.When the lanthanum concentration was greater than 15 mg/L,relaxation effects gradually reduced.When lanthanum concentration was 100 mg/L,V.radiata seedlings stooped growing.[Conclusion] 15 mg/L lanthanum has the optimal toxic relaxation effects on V.radiata seedling under 15 mg/L lead.
关键词
镧/铅胁迫/萌发/叶绿素/维生素C/缓解作用/绿豆Key words
Lanthanum/Lead stress/Germination/Chlorophyll/Vitamin C/Relaxation effects/V.radiata引用本文复制引用
基金项目
国家自然科学基金(31010296)
福建省高校服务海西建设重点项目(A102)
硕士学位授予单位立项建设学科(生物学)()
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据