| 2种硅酸盐细菌对PEG模拟水分胁迫下高羊茅种子萌发的影响 |
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| 引用本文： | 徐妙芳,王晓明,周滢,胡秀芳,陈集双.2种硅酸盐细菌对PEG模拟水分胁迫下高羊茅种子萌发的影响[J].四川草原,2009(8):7-10. |
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| 作者姓名： | 徐妙芳 王晓明 周滢 胡秀芳 陈集双 |
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| 作者单位： | 浙江理工大学生物工程研究所;浙江理工大学蛋白质组学和分子酶学研究室; |
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| 基金项目： | 国家“863”项目(2006AA10Z468) |
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| 摘 要： | 高羊茅是一种应用范围较广的冷季型草坪草。以高羊茅种子为材料,检测了聚乙二醇(PEG-6000)模拟水分胁迫条件下,2种硅酸盐细菌对高羊茅种子萌发的影响。结果表明,PEG胁迫呈剂量效应地抑制高羊茅种子萌发,随着PEG浓度的增加,高羊茅的发芽率和发芽势显著下降。在15%PEG水分胁迫条件下,不同浓度硅酸盐细菌(胶质芽孢杆菌VKPM7519和土壤芽孢杆菌VKPM7517)浸种可提高高羊茅的萌发率,菌液浓度为105CFUml-1时效果最佳,其中VKPM7517在105CFUml-1浓度时的发芽率和发芽势均达到最大值,且差异显著,VKPM7519在105CFUml-1浓度时可提高高羊茅的平均发芽速度。可见,硅酸盐细菌浸种能促进水分胁迫条件下高羊茅种子的萌发,尤其土壤芽孢杆菌的效果最强,表现一定的抗旱潜能。
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| 关 键 词： | 硅酸盐细菌 高羊茅 聚乙二醇(PEG-6000) 水分胁迫 萌发 |
Effect of Polyethylene Glycol(PEG-6000)-simulated Drought Stress on Seeds Germination of Festuca arundinacea by Soaking Seeds with Silicate bacteria Solutions |
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| XU Miao-fang,WANG Xiao-ming,HU Xiu-fang,CHEN Ji-shuang.Effect of Polyethylene Glycol(PEG-6000)-simulated Drought Stress on Seeds Germination of Festuca arundinacea by Soaking Seeds with Silicate bacteria Solutions[J].Journal of Sichuan Grassland,2009(8):7-10. |
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| Authors: | XU Miao-fang WANG Xiao-ming HU Xiu-fang CHEN Ji-shuang |
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| Institution: | 1.Institute of Bioengineering;Zhejiang Science and Technology University;Hangzhou 310018;China;2. Laboratory of Proteomics&Molecular Enzymology;China |
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| Abstract: | Festuca arundinacea as a cool-season turfgrass seed was used widely. The effects of polyethylene glycol(PEG-6000)-simulated drought stress on germination of Festuca arundinace were studied. The results showed that PEG could dose-dependently retard seeds germination,and the germination rate,index and potential all decreased with the increased PEG concentration. Under the condition of 15% PEG-simulated water stress,seeds germination could be improved by soaking them in the Silicate bacteria solutions for 3 ho... |
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| Keywords: | Silicate bacteria Festuca arundinacea Polyethylene glycol （PEG-6000） Water stress Germination |
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