CAJ | 학술논문

以沙打旺(Astragalus adsurgens Pall.)幼苗为材料,采用200 mmol/L NaCl 并添加不同浓度水杨酸(SA,0.2﹑0.4﹑0.6﹑0.8﹑1.0 mmol/L)的处理方法,通过测定沙打旺幼苗耐盐生理指标,确定外源SA对沙打旺幼苗耐盐生理特性的影响. 结果表明,一定浓度的SA能明显提高盐胁迫下沙打旺幼苗叶片脯氨酸和可溶性糖含量;增强盐胁迫下沙打旺幼苗叶片过氧化物酶(POD)和过氧化氢酶(CAT)活性,降低叶片丙二醛(MDA)含量;提高盐胁迫下沙打旺幼苗的根系活力. 0.6 mmol/L SA处理效果最为明显. 说明外源SA能够调节沙打旺幼苗有机渗透调节物质含量和抗氧化酶系活性以及根系活力, 缓解盐胁迫对沙打旺幼苗的伤害.
이사타왕(Astragalus adsurgens Pall.)유묘위재료,채용200 mmol/L NaCl 병첨가불동농도수양산(SA,0.2﹑0.4﹑0.6﹑0.8﹑1.0 mmol/L)적처리방법,통과측정사타왕유묘내염생리지표,학정외원SA대사타왕유묘내염생리특성적영향. 결과표명,일정농도적SA능명현제고염협박하사타왕유묘협편포안산화가용성당함량;증강염협박하사타왕유묘협편과양화물매(POD)화과양화경매(CAT)활성,강저협편병이철(MDA)함량;제고염협박하사타왕유묘적근계활력. 0.6 mmol/L SA처리효과최위명현. 설명외원SA능구조절사타왕유묘유궤삼투조절물질함량화항양화매계활성이급근계활력, 완해염협박대사타왕유묘적상해.
For studying the effects of exogenous salicylic acid on the physiological parameters of salt tolerance in A stragalus adsurgens Pall.Seedlings, the Astragalus adsurgens Pall.Seedlings were treated with 200 mmol/L NaCl and salicylic acid of different dose (0.2、0.4、0.6、0.8、1.0 mmol/L).The results showed that the exogenous SA could increase the content of proline and soluble sugar in Astragalus adsurgens Pall.leaves under salt stress and increase the activities of peroxidase (POD) and catalase (CAT) in leaves.Simultaneously, exogenous SA could reduce malondialdehyde (MDA) content in leaves and in-crease root vigor of A stragalus adsurgens Pall.seedlings.The optimal level of exogenous SA was 0.6 mmol/L.It indicated that exogenous SA could regulate organic compatible solutes and protect the anti-oxidization enzymes and root vigor in A stragalus adsurgens Pall seedling, and alleviate the injury of salt stress on Astragalus adsurgens Pall.plants.