| 盐胁迫对假臭草种子萌芽特性的影响 |
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| 引用本文： | 阚丽艳,谢贵水,王纪坤.盐胁迫对假臭草种子萌芽特性的影响[J].热带农业科学,2009,29(8):26-31,36. |
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| 作者姓名： | 阚丽艳 谢贵水 王纪坤 |
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| 作者单位： | 中国热带农业科学院橡胶研究所/农业部儋州热带农业资源与生态环境重点野外科学观测试验站/农业部热带作物栽培生理学重点开放实验室,海南,儋州,571737 |
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| 基金项目： | 海南省国土环境资源厅基金项目“海南外来物种(植物)调查” |
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| 摘 要： | 假臭草在无盐、低盐（0.75、1.5g／L）及中度盐（3.0g／L）胁迫下都可以正常萌发，说明假臭草种子耐盐能力很强，且低盐浓度有利于假臭草生长；高盐（4.5、6.0g／L）对假臭草种子的萌发有严重的抑制作用。实验表明，高浓度盐分不会对其造成致命伤，但种子萌发和生长变得缓慢；过高的盐浓度导致种子坏死，幼芽死亡，幼根腐烂。研究结果表明，假臭草对盐胁迫具有一定的耐受力和抵抗能力，能够适应一定的盐度环境。假臭草对盐胁迫具有一定的耐受和抵抗能力，能够适应一定的盐度环境，通过实验得知其幼苗生长的适宜盐度为0.75g／L左右，这在理论上揭示了假臭草的生态适应性和入侵性，在实践上为预防假臭草的扩散和最终的治理提供参考。
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| 关 键 词： | 假臭草 盐胁迫 萌芽特性 |
Seed Germination of Eupatorium catarium under Salt Stress |
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| KAN Liyan,XIE Guishui,WANG Jikun.Seed Germination of Eupatorium catarium under Salt Stress[J].Chinese Journal of Tropical Agriculture,2009,29(8):26-31,36. |
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| Authors: | KAN Liyan XIE Guishui WANG Jikun |
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| Institution: | Rubber Research Institute;CATAS;Ministry of Tropical Agriculture Danzhou Key Field Station Observation and Research for TropicalAgricultural Resources and Environments;Ministry of Agriculture Key Laboratory of Physiology of Tropical Crops;Danzhou;Hainan 571737 |
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| Abstract: | Eupatorium catarium can sprout and grow normally under the conditions of no salt, less salt (0.75 g/L or 1.5 g/L) and moderate salt (3.0 g/L). This means that E. catarium has a very high tolerance to salt and that low-level salt is favorable for its growth. High salinity (4.5 g/L or 6.0 g/L) conditions had serious inhibitory action against E. catarium. Salt experiments indicated that salt at high concentrations did not kill E. catarium, but retarded its seed germination and plant growth, and that salt at ex... |
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| Keywords: | Eupatorium catarium salt stress effects germination specialty |
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