| 盐胁迫下外源Si对甘草种子萌发及幼苗K~+、Na~+含量的影响 |
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| 引用本文： | 崔佳佳,张新慧,张恩和.盐胁迫下外源Si对甘草种子萌发及幼苗K~+、Na~+含量的影响[J].草原与草坪,2016(5):1-7. |
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| 作者姓名： | 崔佳佳 张新慧 张恩和 |
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| 作者单位： | 1. 甘肃农业大学 农学院,甘肃 兰州,730070;2. 宁夏医科大学 药学院，宁夏 银川 750004; 宁夏回药现代化工程技术研究中心，宁夏 银川 750004; 宁夏回医药协同创新中心，宁夏 银川 750004; 宁夏医科大学 回医药现代化省部共建教育部重点实验室，宁夏 银川 750004 |
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| 基金项目： | 国家自然科学基金(31260304 |
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| 摘 要： | 以乌拉尔甘草(Glycyrrhiza uralensis)种子为试验材料,研究在NaCl(100和200mmol/L)胁迫下,不同浓度Si(0、0.4、0.8、1.2、1.6和2.0mmol/L)对种子萌发及幼苗根冠比和K~+、Na~+含量的影响。结果表明:外源Si对盐胁迫下种子的发芽率、发芽势和发芽指数均具有显著的促进作用,且Si浓度在0.4和2.0mmol/L下作用最佳;Si可显著增加幼苗的根冠比,幼苗可通过增加K~+吸收,减少Na~+吸收来维持根系内K~+、Na~+的平衡。
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| 关 键 词： | 甘草 盐胁迫 Si 种子发芽 K%2B Na%2B |
Effects of exogenous silicon on seed germination and concentrations of K+ and Na+ in licorice(Glycyrrhiza uralensis)seedlings under salt stress |
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| CUI Jia-jia,ZHANG Xin-hui,ZHANG En-he.Effects of exogenous silicon on seed germination and concentrations of K+ and Na+ in licorice(Glycyrrhiza uralensis)seedlings under salt stress[J].Grassland and Turf,2016(5):1-7. |
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| Authors: | CUI Jia-jia ZHANG Xin-hui ZHANG En-he |
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| Abstract: | The effects of exogenous silicon(0,0.4,0.8,1.2,1.6 and 2.0 mmol/L)on seed germination and the concentrations of K+ and Na+ of licorice(Glycyrrhiza uralensis )under salt stress (100 and 200 mmol/L NaCl)were studied.The results showed that the application of silicon increased the germination rate,germina-tion potential,germination index and root-shoot ratio of seedlings under salt stress,and the improving effect was the best while the silicon concentrations were 0.4 and 2.0 mmol/L.Application of silicon could maintain the balance between K+ and Na+ by improving the absorption of K+ and reduced the absorption of Na+ under salt stress in licorice seedlings. |
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| Keywords: | licorice salt stress silicon seed germination K+ Na+ |
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