摘要
对Na2 CO3 胁迫下星星草幼苗游离氨基酸含量的研究结果表明 ,星星草幼苗游离氨基酸总含量随盐浓度的增加而增加。各组分中Ala、Cys、Gly、leu、Met、Pro、Phe、Val的含量随着Na2 CO3 浓度的增加而增加 ,其中Ala、Cys、Gly、leu、Met、Pro与Na2 CO3 浓度呈极显著正相关关系。Na2 CO3 胁迫下星星草幼苗体内氨累积 ,同时Asp -NH2 的含量明显增加 ,有效降低氨对幼苗的毒害。
Contents of free amino acid of Puccinellia tenuiflora seedlings were studied under sodium carbonate stress. The results showed that free amino contents increased and had a positive correlationship with sodium carbonate concentration. Contents of Ala, Cys, Gly, Leu, Met, Pro, Phe and Val increased with increasing sodium carbonate concentration. Contents of Ala, Cys, Gly, Leu, Met and Pro had a significant positive correlationship with sodium carbonate concentrantion. Contents of NH 3 aaccumulated under Na 2CO 3 stress. In the meantime contents of Asp-NH 2 increased. It can reduce the harm of NH 3 to seedlings and enhance salt-alkali resistance.
关键词
星星草幼苗
游离氨基酸含量
碳酸钠胁迫
氨含量
Puccinellia tenuiflora seedlings, free amino acid contents, sodium carbonate stress, contents of NH 3, contents of Asp-NH_2
