| NaCl胁迫对赖草幼苗生理特性的影响 |
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| 引用本文： | 杜利霞,董宽虎,乔志宏,韩汝旦,娄世杰.NaCl胁迫对赖草幼苗生理特性的影响[J].草原与草坪,2013,33(1):1-4,10. |
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| 作者姓名： | 杜利霞 董宽虎 乔志宏 韩汝旦 娄世杰 |
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| 作者单位： | 山西农业大学动物科技学院,山西太谷,030801 |
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| 基金项目： | “十一五”国家科技支撑计划(2007BAD56B01);山西省科技攻关项目(20120311011-1);山西省科技基础条件平台建设项目(2012091004-0101)资助 |
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| 摘 要： | 以赖草为材料,用不同浓度NaCl(100、200、300、400、500、600、700mmol/L)对赖草进行处理,通过测定叶片含水量、根冠比(R/T)、丙二醛(MDA)、可溶性糖、超氧化物歧化酶(SOD)活性,研究赖草的耐盐能力。结果表明,NaCl浓度低于400mmol/L时赖草叶片含水量、根冠比(R/T)与对照相比变化不显著(P0.05);随NaCl浓度增加,SOD活性和可溶性糖含量呈先上升后下降的趋势;MDA含量呈上升的趋势。赖草在400mmol/L NaCl胁迫下能正常生长,当浓度达到500mmol/L时生长受到影响。
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| 关 键 词： | NaCl胁迫 赖草 生理特性 |
Effect of NaCl stress on physiological characteristics of Leymus secalinus seedling |
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| DU Li-xia
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DONG Kuan-hu
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QIAO Zhi-hong
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HAN Ru-dan
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LOU Shi-jie.Effect of NaCl stress on physiological characteristics of Leymus secalinus seedling[J].Grassland and Turf,2013,33(1):1-4,10. |
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| Authors: | DU Li-xia DONG Kuan-hu QIAO Zhi-hong HAN Ru-dan LOU Shi-jie |
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| Institution: | (College of Animal Science and Technology,Shanxi Agricultural University,Taigu 030801,China) |
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| Abstract: | The salt resistance of Leymus secalinus was studied through NaCl solution treatment with different concentrations(0,100,200,300,400,500,600,700 mmol/L).The results showed that water content of leaves and root-top ratio(R/T) were not significantly different from CK under 400 mmol/L concentration.With the stress intensity increased,monodehydroascorbate(MDA) content was increased,SOD activity and soluble sugar was firstly increased and then decreased.In conclusion,Leymus secalinus could normally grow under 400 mmol/L NaCl stress. |
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| Keywords: | salt stress Leymus secalinus physiological characteristcs SOD MDA |
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