刘晓涵,李雪利,王悦霖,宋佳倩,徐亮,叶协锋,吴东,王静

• 1:河南农业大学烟草学院国家烟草栽培生理生化研究基地烟草行业烟草栽培重点实验室
• 2:广东省韶关烟叶复烤有限公司
• 3:中国烟草总公司职工进修学院
• 4:湖北中烟工业有限责任公司

摘要(Abstract)：

【目的】为了探究添加肉桂醛对Na_2SO_4胁迫下烟草幼苗生长的影响机制。【方法】以烤烟K326为材料,在烟草幼苗期用不同浓度的Na_2SO_4和肉桂醛进行处理,结合烟草幼苗根系发育状况、活性氧含量、抗氧化酶活性及相关基因表达量等指标进行分析。【结果】Na_2SO_4浓度越高,对烟草生长的抑制作用越明显,烟苗根系发育越缓慢,H_2O_2积累越多;75 mmol/L Na_2SO_4胁迫下,0～25 μmol/L肉桂醛可以促进烟草幼苗根系生长,降低H_2O_2和MDA含量,诱导降低SOD和POD的酶活,提高CAT酶活,从而提高幼苗的抗氧化能力,增强烟苗的抗盐能力。【结论】在烟草幼苗阶段,20 μmol/L的肉桂醛可以有效提高烟草幼苗对75 mmol/L Na_2SO_4的抵抗能力,主要通过促进根系发育,调节活性氧含量,诱导抗氧化物质活性变化,缓解盐胁迫的抑制作用。

关键词(KeyWords)： 烟草;硫酸钠;肉桂醛;盐胁迫

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金(No.41907076);; 烟草行业烟草栽培重点实验室项目(No.30800665)

作者(Author): 刘晓涵,李雪利,王悦霖,宋佳倩,徐亮,叶协锋,吴东,王静

DOI: 10.16472/j.chinatobacco.2020.339

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