| 外源甜菜碱对NaCl胁迫下大豆苗期生理指标的影响 |
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| 引用本文： | 黄英运,朱丹华,李虹章,董德坤.外源甜菜碱对NaCl胁迫下大豆苗期生理指标的影响[J].浙江农业学报,2012,24(1):12-16. |
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| 作者姓名： | 黄英运 朱丹华 李虹章 董德坤 |
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| 作者单位： | 1. 浙江师范大学化学与生命科学学院,浙江金华321004;浙江省农业科学院作物与核技术利用研究所杭州国家大豆改良分中心,浙江杭州310021
2. 浙江省农业科学院作物与核技术利用研究所杭州国家大豆改良分中心,浙江杭州,310021 |
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| 基金项目： | 转基因生物新品种培育重大专项(2009ZX08004006B,2011ZX08004002,2012ZX08009004) |
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| 摘 要： | 以大豆品种‘浙春3号’为试验材料,研究了在NaCl胁迫下,施加外源甜菜碱对大豆苗期的光合色素、脯氨酸、丙二醛、可溶性糖、相对电导率以及根系活力等生理指标的影响.结果显示,施加外源甜菜碱显著增加了叶片光合色素和可溶性糖的含量,减少了脯氨酸、丙二醛的积累,降低了叶片的相对电导率,增强了豆苗的根系活力,说明施加外源甜菜碱可以提高植株叶片的光合活性,增强大豆幼苗的渗透调节能力,缓解NaCl胁迫引起的伤害,进而提高大豆的耐盐性.
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| 关 键 词： | 大豆 甜菜碱 NaCl 生理生化指标 |
Effects of exogenous glycine betaine on the physiological indexes of soybean seedlings under NaCl stress |
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| HUANG Ying-yun
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ZHU Dan-hua
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LI Hong-zhang
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DONG De-kun.Effects of exogenous glycine betaine on the physiological indexes of soybean seedlings under NaCl stress[J].Acta Agriculturae Zhejiangensis,2012,24(1):12-16. |
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| Authors: | HUANG Ying-yun ZHU Dan-hua LI Hong-zhang DONG De-kun |
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| Institution: | 2,*(1College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua 321004,China;2Hangzhou Sub-Center of National Soybean Improvement,Institute of Crops and Nuclear Technology Utilization,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China) |
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| Abstract: | Effects of exogenous glycine betaine on some physiological indexes of soybean variety Zhechun NO.3 seedlings under NaCl stress were studied.The photosynthetic pigments content,proline content,malondialdehyde accumulation(MDA),soluble sugar content,relative electric conductivity and root activity of soybean seedlings were investigated.The results showed that exogenous betaine significantly increased the photosynthetic pigments and soluble sugar content,decreased proline and MDA accumulation,reduced the relative electric conductivity of soybean leaves,and enhanced root activity of soybean seedlings,which indicated that the application of exogenous betaine could enhance the photosynthetic activity of soybean leaves,improve the osmoregulatory ability of seedlings,alleviate the damages caused by NaCl stress,and then improve the salt tolerance ability of soybeans. |
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| Keywords: | soybean glycine betaine NaCl physiological-chemical index |
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