ZHANG Lin-qing.The Affection of Brassinolide on the Physiological Indexes of Tomato Seedlings[J].Northern Horticulture,2013,37(01):1-3.
油菜素内酯对盐胁迫下番茄幼苗生理指标的影响
- Title:
- The Affection of Brassinolide on the Physiological Indexes of Tomato Seedlings
- 文章编号:
- 1001-0009(2013)01-0001-03
- Keywords:
- brassinolide(BR); salt stress; tomato; physiological index
- 分类号:
- S 641.2
- 文献标志码:
- A
- 摘要:
- 以番茄品种“合作908”和“奇达利”为试验材料，研究了不同浓度的油菜素内酯（0.05、0.1、0.2、0.4、0.8 mg/L）对盐胁迫下番茄幼苗形态及生理生化特性的影响。结果表明：“合作908”的油菜素内酯的最佳诱导浓度为0.1 mg/L，“奇达利”的最佳诱导浓度为0.2 mg/L;油菜素内酯有效抑制了叶绿素含量的减少；增强了叶片过氧化物酶(POD)、过氧化氢酶(CAT)的活性；降低了膜脂过氧化产物丙二醛含量和质膜透性,缓解了盐胁迫对幼苗生长的抑制。
- Abstract:
- The tomato breed of ‘Hezuo-908’ and ‘Qidali’were chosen as materials，and different concentrations of Brassinolide(BR) 0.05,0.1,0.2,0.4,0.8 mg/L under salt stress were treated on tomato seedlings.The affection of BR on the physiological indexes of tomato seedlings were investigated.The results showed that the best treatment concentration of BR was 0.1 mg/L of ‘Hezuo-908’，the best treatment concentration of BR was 0.2 mg/L of ‘Qidali’.BR restrained the decrease of chlorophyll and significantly enhanced peroxidase(POD),catalase(CAT)and other plant cell protective enzyme activity of leaf and reduced the content of malondialdehyde (product of membrane lipid peroxidation) and the plasmalemma permeability，therefore the growth inhibition caused by salt stress were mitigated.
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备注/Memo
作者简介：张林青（1978-），女，山东东阿人，博士，讲师，现主要从事蔬菜栽培生理生态研究工作。E-mail：linqingzhang@sina.com.