| 3种柽柳属植物种子萌发特性研究 |
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| 引用本文： | 刘帅,付和平,蓝登明,杨阳,刘俊良.3种柽柳属植物种子萌发特性研究[J].安徽农业科学,2017,45(11). |
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| 作者姓名： | 刘帅 付和平 蓝登明 杨阳 刘俊良 |
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| 作者单位： | 内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特,010000;内蒙古阿拉善盟林木种苗站,内蒙古阿拉善盟,750306 |
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| 摘 要： | 目的]研究3种柽柳属植物种子萌发特性。方法]以多枝柽柳、中国柽柳和细穗柽柳为研究对象,用沙床室温试验模拟自然环境,研究不同温度胁迫、不同浓度NaCl盐胁迫、不同浓度聚乙二醇(PEG-6000)干旱胁迫下3种柽柳属植物的种子萌发特性。结果]在15、20、25、30、35℃下,多枝柽柳和中国柽柳在25℃时萌发率最高,分别可达84.00%、97.34%;细穗柽柳在20℃萌发率最高,为71.34%;NaCl溶液对种子萌发均有抑制作用;在干旱胁迫下,PEG浓度小于45%时对多枝柽柳种子萌发有促进作用,对中国柽柳有抑制作用,PEG浓度小于30%时对细穗柽柳种子萌发有促进作用。结论]该研究可为扩大柽柳属植物资源提供科学依据。
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| 关 键 词： | 柽柳 温度 盐胁迫 干旱胁迫 种子发芽 |
Study on Seed Germination Characteristics of 3 Species of Tamarix |
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| Abstract: | Objective]To study the seed germination characteristics of 3 species of Tamarix.Method]Taking Tamarix ramosissima,Tamarix chinensis,Tamarix leptostachys as research object,simulation of natural environment with sand bed room temperature test,the characteristics of seed germination of 3 species of Tamarix under different temperature stress,different concentrations of NaCl salt stress and different concentrations of polyethylene glycol (PEG-6000)of drought stress was studied.Result] At 15,20,25,30,35 ℃,the germination rate of Tamarix ramosissima and Tamarix chinensis reached highest at 25 ℃,which were 84.00%,97.34%,respectively.The germination rate of Tamarix leptostachys was highest at 20 ℃,which was about 71.34%.In the PEG environment,the PEG concentration less than 45% can promote seed germination of Tamarix ramosissima and inhibit seed germination of Tamarix chinensis.The PEG concentration less than 30% can promote seed germination of Tamarix leptostachys.Conclusion]The study can provide scientific basis for expanding the resources of Tamarix. |
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| Keywords: | Tamarixs Temperature Salt stress Drought stress Seed germination |
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