湖北农业科学 ›› 2020, Vol. 59 ›› Issue (3): 29-32.doi: 10.14088/j.cnki.issn0439-8114.2020.03.006

• 栽培·育种 • 上一篇    下一篇

Cd2+胁迫对商麦1619幼苗光合生理和抗氧化酶活性的影响

吴秀宁a, 车丽平b, 张军b, 赵永平b   

  1. 商洛学院,a.健康管理学院;
    b.生物医药与食品工程学院,陕西 商洛 726000
  • 收稿日期:2019-05-28 发布日期:2020-05-11
  • 作者简介:吴秀宁(1987-),女,山东嘉祥人,讲师,主要从事高产栽培与耕作模式优化研究,(电话)15291670608(电子信箱) wuxiuning1988@163.com。
  • 基金资助:
    商洛市科技创新团队项目(SK2017-45); 商洛学院秦岭植物良种繁育中心专项

Effects of Cd2+ stress on photosynthetic physiology and antioxidant enzyme activities of Shangmai 1619 seedlings

WU Xiu-ninga, CHE Li-pingb, ZHANG Junb, ZHAO Yong-pingb   

  1. a.College of Health Management;
    b.College of Biology Pharmacy and Food Engineering,Shangluo University,Shangluo 726000,Shaanxi,China
  • Received:2019-05-28 Published:2020-05-11

摘要: 为研究Cd2+胁迫对小麦(Triticum aestivum L.)品种商麦1619幼苗光合生理特性的影响,同时以商麦1619和区域试验对照品种小偃15为试验材料,水培条件下测定2个品种在不同Cd2+浓度胁迫下叶绿素含量、光合生理参数和抗氧化酶活性的变化。结果表明,Cd2+胁迫后,2个小麦品种的叶绿素含量、净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)、过氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性均有不同程度的下降;商麦1619的过氧化氢酶(CAT)活性和丙二醛(MDA)含量呈增加趋势,而小偃15呈下降趋势。相对而言,商麦1619的抗Cd2+胁迫能力弱于小偃15。

关键词: 小麦(Triticum aestivum L.), Cd2+胁迫, 商麦1619, 光合生理, 抗氧化酶活性

Abstract: To explore the effects of Cd2+ stress on physiological characteristics of wheat(Triticum aestivum L.) variety Shangmai 1619 regional test control variety seedling, taking Shangmai 1619 and Xiaoyan 15 as tested materials, chlorophyll content, photosynthetic physiological parameters and antioxidant enzyme activities of wheat seeding under different Cd2+ stresses were determined under hydroponic conditions. The results showed that, after Cd2+ stress, chlorophyll content, net photosynthetic rate (Pn), transpiration rate(Tr), stomatal conductance(Gs), intercellular CO2 concentration (Ci), superoxide dismutase (SOD) activity and peroxidase(POD) activity of two wheat cultivars all decreased. Catalase(CAT) activity and malondialdehyde(MDA) content in Shangmai 1619 increased, while that of Xiaoyan 15 decreased. Comparatively speaking, Shangmai 1619 showed weaker resistance than Xiaoyan 15 under Cd2+ stress.

Key words: wheat(Triticum aestivum L.), Cd2+ stress, Shangmai 1619, physiological characteristic, antioxidant enzyme activities

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