| 刘萍,周玲玲,王军.盐分和水分胁迫对补血草种子萌发的影响[J].干旱地区农业研究,2008,(4):167~171 |
| 盐分和水分胁迫对补血草种子萌发的影响 |
| Effects of salt and water stress on seed germination of Limonium |
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| DOI：10.7606/j.issn.1000-7601.2008.04.32 |
| 中文关键词: 大叶补血草 耳叶补血草 盐胁迫 水分胁迫 萌发 |
| 英文关键词:L. gmelinii L. otolepis salt stress water stress germination germination recovery |
| 基金项目:国家重大基础研究前期研究专项基金资助项目(2002CCA02800)； 新疆特种植物药资源教育部重点实验室开放课题 |
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| 中文摘要: |
| 在不同昼夜温度条件下用不同浓度NaCl(mmol/L)溶液及等渗聚乙二醇溶液处理大叶补血草(Limo-nium gmelinii(Willd.)Kuntze)和耳叶补血草(Limonium otolepis(Schrenk)Kuntze)种子,分别测定其萌发率、发芽势和发芽指数,测定处理9 d未萌发的种子移入蒸馏水后的萌发恢复率,以研究温度、盐胁迫和模拟干旱胁迫对种子萌发的影响。结果表明:两种补血草种子萌发的最适温度为2515℃,在蒸馏水中的萌发率最高,随着盐浓度和PEG6000溶液浓度的增加,种子的萌发率、发芽势和发芽指数递减,对萌发产生抑制作用;PEG6000溶液对种子的萌发抑制程度与等渗NaCl溶液相当。较高盐浓度和PEG6000溶液处理下的种子复水后萌发可以恢复。 |
| 英文摘要: |
| Seeds of L. gmelinii and L. otolepis were germinated9days at different temperature regimes in different concentration of NaCl solution and iso-osmotic PEG6000．According to the germination rate germination potential germination index and the germination recovery percentage of seeds that were incubated in NaCl and PEG6000solutions for9days recovered after being transferred to distilled water．A conclusion could be drawn that a temperture regime of 15℃ at night and 25℃ in day time yielded optimal germination rate．Germination rate was the highest in the distilled water．The germination rate germination potential and germination index increased along with the reducing of NaCl and iso-osmotic PEG6000 concentrations which had inhibitory effect on the germination of seeds．The inhibitory level of PEG6000was as much as that of iso-osmotic NaCl． |
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