| NaCl胁迫对3个臭椿种源种子萌发的影响 |
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| 引用本文： | 曹兵,宋丽华,魏婷婷. NaCl胁迫对3个臭椿种源种子萌发的影响[J]. 东北林业大学学报, 2007, 35(12): 9-10,12 |
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| 作者姓名： | 曹兵 宋丽华 魏婷婷 |
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| 作者单位： | 宁夏大学,银川,750021 |
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| 基金项目： | 宁夏大学自然科学基金项目(NS0513)，宁夏高等学校科学研究项目 |
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| 摘 要： | 为研究臭椿种子发芽对NaCl胁迫的响应,在种子萌发期间用0(CK)、50、100和200mmol/L4种不同浓度的NaCl对3个臭椿种源的种子进行处理,结果表明:随着NaCl浓度的增大,各种源臭椿种子的发芽率、发芽势、发芽指数和活力指数均呈下降趋势,发芽后幼苗的根长、苗高等也呈下降趋势;不同种源种子的萌发对NaCl胁迫的反应不同,河南宝丰种源的种子耐盐性最强,宁夏吴忠的种子耐盐性一般,宁夏彭阳的种子耐盐性较差。
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| 关 键 词： | 臭椿 种子发芽 NaCl胁迫 活力指数 |
| 修稿时间： | 2007-02-26 |
Effects of NaCl Stress on Seed Germination of Ailanthus altissima from Several Provenances |
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| Cao Bing,Song Lihua,Wei Tingting. Effects of NaCl Stress on Seed Germination of Ailanthus altissima from Several Provenances[J]. Journal of Northeast Forestry University, 2007, 35(12): 9-10,12 |
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| Authors: | Cao Bing Song Lihua Wei Tingting |
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| Affiliation: | School of Agriculture, Ningxia University, Yinchuan 750021, P. R. China;12 |
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| Abstract: | An experiment was conducted to study the effect of NaCl stress on the seed germination and seedling growth of Ailanthus altissima from three provenances by treating the seeds with different NaCl concentrations (0, 50, 100, 200 mmol/L) during seed germination. Results show that the germination percentage, germination energy, germination index, seed vigor index, root length and seedling height all decrease gradually with increasing NaCl concentration. The responses of seed germination for the three provenances to NaCl stress are significantly different. The seeds from Baofeng, Henan Province exhibit the greatest salt tolerance, and the salt tolerance of the seeds from Pengyang, Ningxia is the worst. |
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| Keywords: | Ailanthus altissima Seed germination NaCl stress Vigor indexes |
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