生物学杂志

生物学杂志 ›› 2020, Vol. 37 ›› Issue (6): 73-.doi: 10.3969/j.issn.2095-1736.2020.06.073

• 研究报告 • 上一篇    下一篇

水分胁迫对不同发育时期藜麦生理的影响

  

  1. 1. 成都大学 药学与生物工程学院， 成都 610106；2. 成都大学 农业农村部杂粮加工重点实验室， 成都 610106
  • 出版日期:2020-12-18 发布日期:2020-12-21
  • 通讯作者: 孙雁霞，副教授，主要从事植物生物技术相关研究，E-mail：sunyanxia1976@cdu.edu.cn
  • 作者简介:田计均，硕士研究生，主要从事作物栽培及天然产物方面的研究，E-mail：597666043@qq.com
  • 基金资助:
    农业农村部杂粮加工重点实验室开放基金项目（2017Y0012）；成都大学2019年大学生创新训练计划孵化培育项目（CDU_CX_2019275，CDU_CX_2019276，CDU_CX_2019279，CDU_CX_2019282）

Effect of water stress on physiology of quinoa in different developmental stages#br#

  1. 1. College of Pharmacy and Bioengineering, Chengdu University, Chengdu 610106, China; 2. Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu 610106, China
  • Online:2020-12-18 Published:2020-12-21

PDF (PC)

92

摘要： 为了探究水分胁迫对不同发育时期藜麦生理的影响，用30%质量分数聚乙二醇6000（PEG6000）溶液模拟干旱条件和双套盆法模拟水涝条件，测定幼苗期、现蕾期、花期和灌浆期藜麦的渗透物质含量和生理指标。结果发现，与对照组相比,在干旱和水涝胁迫下4个时期藜麦的可溶性蛋白（SP）含量均无明显差异，幼苗期可溶性糖（WSS）含量降低，其他时期显著增加。在干旱胁迫下，灌浆期过氧化物酶（POD）活性无明显变化，其他时期显著上升。现蕾期和花期的丙二醛（MDA）含量升高，其他时期下降或无明显变化。在水涝胁迫下，4个时期藜麦的POD活性均显著升高。仅现蕾期MDA显著增加，其他时期无明显变化。这些结果表明藜麦可以通过提高WSS的含量和POD活性减少水分胁迫的不利影响，同时干旱对现蕾期和花期藜麦及水涝对现蕾期藜麦具有较大影响，幼苗期和灌浆期藜麦对水分胁迫均表现出较强的耐受性。

关键词: 藜麦, 水分胁迫, 渗透物质, 生理指标

Abstract: To explore the effect of water stress on the physiology of quinoa in different developmental stages, the drought stress with 30% polyethylene glycol 6000 (PEG6000) and the waterlogging stress with the double basin method were performed to treat the quinoa plants of different developmental stages to determine the content of osmotic substances and physiological indexes. The results showed that, compared with the control group, under drought and waterlogging stresses, the soluble protein (SP) content in the quinoa at four stages showed no significant difference, but the soluble sugar content decreased at seedling stage and increased at other stages significantly. Under drought stress, the activity of peroxidase（POD）displayed no obvious change at filling stage, but it increased significantly at other stages. Malondialdehyde（MDA）content increased at squaring and flowering stage, while it decreased or had no obvious change at other stages. Under waterlogging stress, POD activity of quinoa increased significantly at four stages. MDA showed increased content at squaring stage and a normal content at other stages. These results indicated that quinoa could reduce the adverse effect of water stress by increasing the content of WSS and POD activity. Drought had a great influence on the quinoa at squaring and flowering stages, and waterlogging had a great influence on the quinoa at squaring stage, and quinoa showed a strong tolerance to water stress at seedling and grouting stages.

Key words: quinoa, water stress, osmotic substance, physiological indicator

中图分类号: