| 盐胁迫对大花飞燕草种子萌发的影响 |
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| 引用本文： | 张彦妮,李博,何淼.盐胁迫对大花飞燕草种子萌发的影响[J].草业科学,2012,29(8):1235-1239. |
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| 作者姓名： | 张彦妮 李博 何淼 |
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| 作者单位： | 东北林业大学园林学院,黑龙江哈尔滨,150040;东北林业大学园林学院,黑龙江哈尔滨,150040;东北林业大学园林学院,黑龙江哈尔滨,150040 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 采用不同浓度的NaCl、Na2SO4、NaHCO3和Na2CO3四种盐的混合液及NaCl、NaHCO3两种单盐分别处理大花飞燕草（Delphinium grandiflorum）种子，观察并测定不同浓度盐碱胁迫下种子的发芽率、发芽指数、幼苗生物量等，根据测定的数值计算出种子活力的指标。结果表明，低浓度NaCl盐溶液有利于大花飞燕草生物量的积累，重度的混合盐溶液胁迫下，不论浓度高低都不利于其萌发、生长;高浓度盐碱溶液胁迫对其活力影响很大，盐浓度达150 mmol·L-1时，不同处理下的种子活力都为0。盐胁迫和碱胁迫同时作用于大花飞燕草时，两者互作共同影响种子活力。
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| 关 键 词： | 大花飞燕草 盐碱胁迫 萌发特性 |
Effects of saline and alkali stress on seed germination of Delphinium grandiflorum |
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| ZHANG Yan-ni,LI Bo,HE Miao.Effects of saline and alkali stress on seed germination of Delphinium grandiflorum[J].Pratacultural Science,2012,29(8):1235-1239. |
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| Authors: | ZHANG Yan-ni LI Bo HE Miao |
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| Institution: | (College of Landscape Architecture,Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | Seeds of Delphinium grandiflorum were treated by mixture solutions of four salts(NaCl,Na2SO4,NaHCO3 and Na2CO3) at different concentrations and two single salt of either NaCl or NaHCO3 to study effects of saline and alkali stress on seed germination of D.grandiflorum.Germination rate and germination index of the seeds,seedling biomass were also measured under saline and alkali treatments.The index of seed vigor was calculated according to the values measured before.The results showed that there was a beneficial for the accumulation of seedling biomass of D.grandiflorum at low concentrations of single NaCl threat.However,under mixture threats,the mixtures were detrimental to seed germination and seedling growth regardless their concentrations were high or low.Threat of the high concentration solution had a great influence on the seed vigor.When the concentration of the salt was up to 150 mmol·L-1,the seed vigor was 0 under different treatments.There would be interaction between the salt threat and alkali threat,if both of them act on D.grandiflorum at the same time.They could affect the seed vigor together severely. |
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| Keywords: | Delphinium grandiflorum saline and alkali stress germination characteristics |
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