| 迟春明,王志春,李彬.混合盐碱胁迫对帚用高粱萌发及苗期生长的影响[J].干旱地区农业研究,2008,(4):148~151 |
| 混合盐碱胁迫对帚用高粱萌发及苗期生长的影响 |
| Effects of complex alkal-i saline stress on germination and seedling growth of broom sorghum （sorghum bicolor （L．） Moench） |
| |
| DOI：10.7606/j.issn.1000-7601.2008.04.28 |
| 中文关键词: 混合盐碱胁迫 帚用高粱 萌发 幼苗 渗透胁迫 离子毒害 |
| 英文关键词:complex alkal-i salt mixed stress broom sorghum germination seedlings osmotic stress ion toxicity |
| 基金项目:中科院知识创新工程项目(KZCX1-SW-19-5-01)； 东北地理所领域前沿项目(KZCX3-SW-NA-06) |
|
| 摘要点击次数: 366 |
| 全文下载次数: 263 |
| 中文摘要: |
| 将NaHCO3和Na2CO3等摩尔混合,NaHCO3、Na2CO3、NaCl等摩尔混合分别得到250 mmol/L的混合溶液T1和T2,对帚用高粱的种子及幼苗进行混合盐碱胁迫处理。结果表明:混合盐碱胁迫导致帚用高粱种子发芽率降低,幼苗相对生长率减小,叶片电解质外渗率提高,可溶性糖含量增加,叶绿素含量减少;碱性盐混合引起的盐碱胁迫(T1)对帚用高粱种子萌发和幼苗生长的抑制作用明显强于中性盐和碱性盐混合引起的盐碱胁迫(T2);渗透胁迫和离子毒害是引起抑制作用的主要原因。 |
| 英文摘要: |
| Mixture of NaHCO3 and Na2CO3 in the ratio of 1∶1（molar） was used as the first treatment （T1） and NaHCO3 Na2CO3 and NaCl were mixed in the ratio of1∶1∶1（molar） as the second treatment （T2） to obtain complex alkal-i saline stress．The total concentrations of both abovementioned two treatment solutions are 250 mmol／L．The Results show that complex alkal-i saline stress not only significantly inhibited the germination of broom sorghum seeds seedling growth and relative growth rate （RGR） of broom sorghum seedlings but also enhanced the rate of electrolyte leakage and soluble sugars content and reduced the chlorophyll content of leaves．And effects of complex alkal-i saline stress caused by mixing NaHCO3 and Na2CO3 on germination of broom seeds and seedling growth of broom sorghum were significant greater than those of complex alkal-i saline stress caused by mixing NaHCO3 Na2CO3 and NaCl． |
| 查看全文 查看/发表评论 下载PDF阅读器 |