| Na2CO3胁迫对青海星星草种子萌发的影响 |
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| 引用本文： | 卢素锦,周青平,颜红波.Na2CO3胁迫对青海星星草种子萌发的影响[J].青海大学学报,2008,26(2):8-11. |
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| 作者姓名： | 卢素锦 周青平 颜红波 |
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| 作者单位： | [1]青海大学生物科学系,青海西宁810016 [2]青海大学畜牧兽医科学院,青海西宁810003 |
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| 基金项目： | 农业部青藏高原牧草种质资源保护利用项目 |
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| 摘 要： | 对Na2O3胁迫下青海星星草种子萌发过程中发芽率、发芽指数、活力指数、幼苗生长势的变化进行了研究。结果表明：青海星星草种子的发芽率、发芽指数、活力指数、幼苗生长势与Na2O3胁迫浓度呈现出极其显著的负相关关系。影响青海星星草种子累积发芽率的Na2CO3浓度的适宜值、临界值、极限值分别为1．42％、2．62％和3．94％。清水复萌实验表明，经较高浓度Na2CO3处理的种子仍具有较高的发芽潜能，说明青海星星草种子具有较强的抗盐碱性。
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| 关 键 词： | 青海星星草 Na2Co3胁迫 萌发 清水复萌 |
| 文章编号： | 1006-8996(2008)02-0008-04 |
| 修稿时间： | 2007年11月5日 |
Effects of sodium carbonate on seed germination of Qinghai alkaline grass |
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| LU Su-jin,ZHOU Qing-ping,YAN Hong-bo.Effects of sodium carbonate on seed germination of Qinghai alkaline grass[J].Journal of Qinghai University(Natural Science),2008,26(2):8-11. |
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| Authors: | LU Su-jin ZHOU Qing-ping YAN Hong-bo |
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| Institution: | LU Su - jin, ZHOU Qing - ping, YAN Hong - bo ( 1. Department of Biological Sciences , Qinghai University, Xining 810016, China; 2. Academy of Animal and Veterinary Sciences, Qinghai University, Xining 810003, China) |
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| Abstract: | Changes of germination percentage, germination index, vigor index and growth potential of germinating Puccinellia tenuifiora （ Griseb. ） Scribn, ＆Merr, ev Qinghai seeds under sodium carbonate stress were studied. The results are as follows： germination percentage, germination index, vigor index and growth potential of Puccinellia tervura （ Griseb. ） Scribn. ＆Merr, cv Qinghai seeds have the significant negative eorrelat/on to the stressing concentration of sodium carbonate solution. The optimal, critical , and limit value of sodium carbonate concentration that affects germination percentage is 1.42%, 2.62% and 3.94%, respectively. The result suggests that seeds stressed in higher concentration of sodium carbonate solution still have greater germination capacity, showing the especially stronger resistance of Puccinellia tenuifiora （ Griseb. ） Scribn. ＆Merr, ev Qinghai to salt alkali. |
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| Keywords: | puccinellia tenuifiora（ Griseb ） Scribn ＆Merr ev Qinghai sodium carbonate stress germination regerminafion in water |
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