NaCl胁迫对翅碱蓬营养物质含量的影响

Influence of NaCl Stress on Alkaline Nutrient Content of Suaeda salsa

以广泛分布在辽宁海岸线的翅碱蓬为研究对象,研究了不同浓度NaCl胁迫(0、100、200、300、400、500、600 mmol·L-1)对翅碱蓬中营养物质含量的影响,以期为盐碱地的改良利用、翅碱蓬的作物化栽培及经济价值的开发利用提供一定的参考依据。结果表明:随着NaCl浓度的升高翅碱蓬中可溶性糖、蛋白质和维生素C含量呈先增加后减少的趋势,并且可溶性糖和蛋白质各处理值均高于对照值。NaCl胁迫使翅碱蓬体内积累较多的可溶性糖和蛋白质来维持渗透平衡,并且通过渗透调节来抵御盐分对其的伤害,保证植株在盐分胁迫条件下从外界高盐溶液中吸收水分。NaCl浓度亦对翅碱蓬中Zn、Fe、Ca、Mg含量影响明显,随着NaCl浓度的提高,翅碱蓬中Zn、Fe、Mg含量表现出先升高后下降的变化趋势,Ca含量表现持续下降的变化趋势。其中,当NaCl浓度在0 mmol·L-1时,翅碱蓬Ca含量最高;当NaCl浓度在100 mmol·L-1时,翅碱蓬Zn、Fe含量最高;Mg则是300 mmol·L-1时含量最高。

The species of pterygolith were studied widely distributed on the Liaoning coastline,the effects of different concentrations of NaCl stress（ 0,100,200,300,400,500,600 mmol·L-1） on the nutrient content of Suaeda salsa were studied,with a view to improving the saline-alkali land,it provided some theoretical basis for the development and utilization of materialized cultivation and economic value.The results showed that with the increase of NaCl concentration,the content of soluble sugar,protein and vitamin C in Suaeda salsa were increased first and then decreased,soluble sugar and protein treatments were higher than CK. NaCl stress promoted the accumulation of soluble sugars and proteins in the pterygotic body to maintain the osmotic balance,through osmotic regulation to resist the damage of salt,the plant could absorb water from the high salt solution under salt stress.NaCl concentration also had obvious influence on the content of Zn,Fe,Ca and Mg in Suaeda salsa. With the improvement of NaCl concentration,the content of Zn,Fe and Mg in Suaeda salsa showed a change trend after the first increase,and the change trend of Ca content continued to decrease.Among them,when NaCl concentration was 0 mmol · L-1,the content of the PWM was the highest. When NaCl concentration was 100 mmol·L-1,the wing base Zn and Fe content were the highest.Mg was the highest in300 mmol·L-1.