| 晋丽娟,张文辉,王涛.NaCl胁迫对花棒种子萌发的影响[J].干旱地区农业研究,2007,(3):150~153 |
| NaCl胁迫对花棒种子萌发的影响 |
| Effect of salt stress on seed germination of Hedysarum scoparium |
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| DOI：10.7606/j.issn.1000-7601.2007.03.32 |
| 中文关键词: 花棒 盐胁迫 种子萌发 |
| 英文关键词:Hedysarum scoparium salt stress seed germination |
| 基金项目:天津市科技发展计划项目(033121511) |
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| 摘要点击次数: 439 |
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| 中文摘要: |
| ：用不同浓度的NaCl溶液对花棒(heyedysarum scoparium)种子进行胁迫萌发实验,观察其发芽率和萌发后种苗的生长情况,并测定萌发吸水率及淀粉酶活性。结果表明:花棒种子萌发对盐胁迫有一定的适应性,当NaCl盐浓度≤0.9%时,种子的发芽率均能达到90%以上;但随着NaCl浓度的增加,种子的萌发吸水受到抑制,淀粉酶活性降低,发芽率、发芽指数和活力指数均呈逐渐下降趋势。当NaCl盐浓度≤0.6%时,种子萌发出的幼苗生长基本不受影响;但当NaCl盐浓度≥1.5%时,胚根伸长基本停止。 |
| 英文摘要: |
| The seeds of Hedysarum scoparium were treated with different concentrations of NaCl.The germination percentage,growth status of their roots and shoots were observed.The imbibition rate and the amylum enzyme activity of the seeds were determinated.The results showed that the adaptation of Hedysarum scoparium to the salt sress were approved.The germination of the seeds were all above 90% by the lower concentrations of NaCl(≤0.9%).With increasing of the concentrations of NaCl,the imbibition rate and the amylum enzyme activity were restrained.The germination rate,the germination index and the vigor index all presented downtrend.The growth of the seedlings were not influenced by the lower concentrations of NaCl≤0.6%,but the radicle elongation was completly inhibited by the concentrations of NaCl≥1.5%. |
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