Impact of GGR on the Antioxidant Physiological Indices of Kobresia humilis(C.A.Mey ex Trauvt..) Serg.in Alpine Meadow

doi:10.11733/j.issn.1007-0435.2010.01.011

›› 2010, Vol. 18 ›› Issue (1): 56-60.DOI: 10.11733/j.issn.1007-0435.2010.01.011

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Impact of GGR on the Antioxidant Physiological Indices of Kobresia humilis(C.A.Mey ex Trauvt..) Serg.in Alpine Meadow

LI Yi-kang¹, RAN Fei^2,3, HAN Fa¹, ZHOU Hua-kun¹, ZHANG Fa-wei¹, LIN Li¹

1. Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;
2. Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan Province 610041, China;
3. Graduated School, Chinese Academy of Sciences, Beijing 100039, China

Received:2009-04-27 Revised:2009-11-25 Online:2010-02-15 Published:2010-02-15

绿色植物生长调节剂(GGR)对高寒草甸矮嵩草抗氧化生理指标的影响

李以康¹, 冉飞^2,3, 韩发¹, 周华坤¹, 张法伟¹, 林丽¹

1. 中国科学院西北高原生物研究所, 青海, 西宁, 810008;
2. 中国科学院成都生物研究所, 四川, 成都, 610041;
3. 中国科学院研究生院, 北京, 100039

通讯作者: 韩发,E-mail:hanfa@nwipb.ac.cn
作者简介:李以康(1973- ),男,山东临沂人,助理研究员,硕士,主要从事草地生态学研究,E-mail: liyikang501@163.com
基金资助:
国家科技攻关计划项目(2005BA901A20);国家重点基础研究发展“973”计划(2009CB421102);中科院西部行动计划二期项目(KZCX2-XB2-06-02)资助

Abstract

Abstract: In order to provide scientific basis for the use of GGR on the plant growth,the physiology response perennial grass Kobresia humilis(C.A.Mey ex Trauvt.) Serg was studied outdoors in Qinghai-Tibet Plateau in 2006 by spraying GGR on the alpine meadow.The results show that the activity of superoxide dismutase(SOD) was significantly higher than that in control in June and August(P<0.05),but not significant in July.The content of glutathione(GSH) was not significantly influenced.The change of soluble sugar contents appeared as inversion "S" shape in treatment while "V" shape in control during the grown season,and it was obviously higher in treatment plots than that of the control(P<0.05).In July and August,the contents of soluble protein was higher than that of the control(P<0.05).The treatment increased the contents of chlorophyll a,b,and total chlorophyll.In the early and late grown season,the generation velocity of O₂^- was significantly decreased than that in control.Plant height,coverage,and biomass were also higher than those in control.The application of GGR elevated the antioxidant capacity and osmotic regulation capacity of the leaves of K.humilis and promoted the its growth.

Key words: GGR, Kobresia humilis(C.A.Mey ex Trauvt.) Serg., Antioxidant capacity, Osmoregulation substance

摘要： 以青藏高原高寒草甸自然生长条件下的矮嵩草(Kobresia humilis(C.A.Mey ex Trauvt)Serg.)为对象,研究绿色植物生长调节剂(GGR)对其生理过程的影响。结果表明:抗氧化酶超氧化物歧化酶(SOD)活性在6月份和8月份显著高于对照样地的活性(P<0.05),在7月差异不显著;抗氧化剂谷胱甘肽(GSH)含量差异不显著;处理样地可溶糖性含量随时间呈倒"S"形变化,而对照样地的含量呈"V"字形变化,处理样地显著高于对照样地(P<0.05);在7月和8月可溶蛋白含量显著高于对照(P<0.05);施用GGR提高了矮嵩草叶片的叶绿素a、b和总叶绿素含量;在生长初期和后期,显著降低了矮嵩草叶片超氧阴离子自由基(O₂^-)的产生速率。施用GGR提高了矮嵩草叶的抗氧化能力和渗透调节能力,促进植物的生长。

关键词: GGR, 矮嵩草, 抗氧化能力, 渗透调节物质

CLC Number:

LI Yi-kang, RAN Fei, HAN Fa, ZHOU Hua-kun, ZHANG Fa-wei, LIN Li. Impact of GGR on the Antioxidant Physiological Indices of Kobresia humilis(C.A.Mey ex Trauvt..) Serg.in Alpine Meadow[J]. , 2010, 18(1): 56-60.

李以康, 冉飞, 韩发, 周华坤, 张法伟, 林丽. 绿色植物生长调节剂(GGR)对高寒草甸矮嵩草抗氧化生理指标的影响[J]. , 2010, 18(1): 56-60.

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Impact of GGR on the Antioxidant Physiological Indices of Kobresia humilis(C.A.Mey ex Trauvt..) Serg.in Alpine Meadow

绿色植物生长调节剂(GGR)对高寒草甸矮嵩草抗氧化生理指标的影响

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