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| 盐碱混合胁迫对小麦幼苗阳离子吸收和分配的影响 | |
| 引用本文： | 郭 伟,王庆祥,于立河.盐碱混合胁迫对小麦幼苗阳离子吸收和分配的影响[J].麦类作物学报,2011,31(4):735-740. |
| 作者姓名： | 郭 伟 王庆祥 于立河 |
| 作者单位： | 1. 沈阳农业大学农学院，辽宁沈阳,110161;黑龙江八一农垦大学农学院，黑龙江大庆163319 2. 沈阳农业大学农学院，辽宁沈阳,110161 3. 黑龙江八一农垦大学农学院,黑龙江大庆,163319 |
| 基金项目： | 黑龙江省重大课题(G00QY08);黑龙江省教育厅资助项目(1153lz17)。 |
| 摘 要： | 为探讨盐碱胁迫下小麦阳离子吸收和分配特点，采用两种中性盐（NaCl和Na2SO4）和两种碱性盐（NaHCO3和Na2CO3）混合模拟不同浓度盐碱胁迫条件，对龙麦26和克旱16两种不同基因型春小麦幼苗进行14 d胁迫处理，测定和分析了叶片和根系中Na+、K+、Ca2+、Mg2+含量的变化。结果表明，盐碱混合胁迫增加了小麦幼苗Na+含量，且随着盐浓度的增加和碱性盐比例的提高，Na+含量逐渐增加；龙麦26幼苗K+的吸收规律与Na+相同，而克旱16幼苗K+含量变化与之相反；盐碱混合胁迫通过降低植株的K/Na限制了Ca2+、Mg2+的吸收量，且阻碍了Ca2+、Mg2+由根向地上部的运转，致使叶片中Ca2+、Mg2+含量降低。盐碱混合胁迫下，小麦对Na+、K+等一价阳离子与Ca2+、Mg2+等二价阳离子的吸收上表现为拮抗作用。 |
| 关 键 词： | 小麦 幼苗 盐碱胁迫 离子平衡 |
Effects of Salinity alkalinity Stress on Cation Absorption and Distribution in Wheat Seedlings |
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| GUO Wei,WANG Qing xiang,YU Li he.Effects of Salinity alkalinity Stress on Cation Absorption and Distribution in Wheat Seedlings[J].Journal of Triticeae Crops,2011,31(4):735-740. | |
| Authors: | GUO Wei WANG Qing xiang YU Li he |
| Institution: | GUO Wei1,2,WANG Qing-xiang1,YU Li-he2(1.College of Agronomy,Shenyang Agricultural University,Shenyang,Liaoning 110161,China,2.College of Agronomy,Heilongjiang Bayi Agricultural University,Daqing,Henongjiang 163319,China) |
| Abstract: | Neutral salt(NaCl and Na2SO4) and basic salt(NaHCO3 and Na2CO3) were used to simulate salinity-alkalinity stress in different concentration,the seedlings of two spring wheat genotypes(Longmai 26 and Kehan 16) were treated under the stress for 14 days.The contents of Na+,K+,Ca2+ and Mg2+ in the roots and leaves were determined to dissect the characteristics of absorption and distribution of cation under salinity-alkalinity stress.The results showed that the Na+ content were gradually increased in wheat seedl... |
| Keywords: | Wheat Seedlings Salinity-alkalinity stress Ionic equilibrium |
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