华北农学报 ›› 2007, Vol. 22 ›› Issue (5): 15-18. doi: 10.7668/hbnxb.2007.05.003

所属专题: 小麦

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CO2浓度升高对春小麦不同生育时期抗氧化系统的影响

胡莹莹1, 赵天宏1, 徐玲1, 史奕2, 赵艺欣1   

  1. 1. 沈阳农业大学农学院, 辽宁 沈阳 110161;
    2. 中国科学院沈阳应用生态研究所, 辽宁 沈阳 110016
  • 收稿日期:2007-06-17 出版日期:2007-10-28
  • 通讯作者: 赵天宏(1972-),男,辽宁沈阳人,博士后,副教授,主要从事植物生理生态学研究工作。
  • 作者简介:胡莹莹(1982-),女,辽宁沈阳人,在读硕士,主要从事植物生理生态学研究工作。
  • 基金资助:
    国家自然科学基金项目(3050006930570348);中科院陆地生态过程重点实验室基金项目研究(2005)

Effects of Elevated CO2 Concentration on Anti-oxidative System in Different Bearing Time of Spring Wheat

HU Ying-ying1, ZHAO Tian-hong1, XU Ling1, SHI Yi2, ZHAO Yi-xin1   

  1. 1. College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China;
    2. Institute of Shenyang Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2007-06-17 Published:2007-10-28

摘要: 利用开顶式气室研究了CO2浓度升高(550μmol/mol)对小麦(Triticum aestivumL)孕穗期和开花期抗氧化系统的影响。结果表明,高浓度CO2下,小麦叶片外渗电导率和丙二醛的含量下降,说明膜脂过氧化程度有所降低;虽然O2产生速率和H2O2含量2个时期相比开花期大于孕穗期,但是两者均低于对照,说明高CO2浓度下活性氧产生减少;SOD,POD,CAT的活性与对照相比有所增加并达到显著或极显著水平;随着CO2浓度的升高,ASA和Car含量也随之增加,但是随着生育期的推移,两者含量均有不同程度的减少;最终生物量和籽粒产量分别增长18%和14%,说明CO2浓度升高有利于减轻小麦的氧化损伤,促进植物生长。

关键词: 小麦, CO2浓度升高, 活性氧, 抗氧化系统

Abstract: Effects of elevated CO2 concentration (550 μmol/mol) on anti-oxidative system during boot stage and flowering time in wheat was researched in open-top chambers. The results showed that the relative electric conductance and MDA content reduced under elevated CO2 concentration, which illuminated the decrease of lipid per-oxidation. Compared the two period, O2 production rate and H2O2 content were higher in flowering time than that of boot stage, but both of them were lower than that of control, which illuminate that elevated CO2concentration decreased the production of active oxygen. The activities of SOD, POD and CAT increased and attained significance level or highly significance level. ASA and Car contents were increasing with the increasing of CO2 concentration, but reduced more or less with the process of bearing time. Ultimately, the biomass and yield added 18% and 14% separately, which showed elevated CO2concentration is beneficial to alleviate the damage of anti-oxidation in spring wheat.

Key words: Spring wheat, Elevated CO2 concentration, Active oxygen, Anti-oxidative system

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引用本文

胡莹莹, 赵天宏, 徐玲, 史奕, 赵艺欣. CO2浓度升高对春小麦不同生育时期抗氧化系统的影响[J]. 华北农学报, 2007, 22(5): 15-18. doi: 10.7668/hbnxb.2007.05.003.

HU Ying-ying, ZHAO Tian-hong, XU Ling, SHI Yi, ZHAO Yi-xin. Effects of Elevated CO2 Concentration on Anti-oxidative System in Different Bearing Time of Spring Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(5): 15-18. doi: 10.7668/hbnxb.2007.05.003.

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