摘要
为探讨外源硅对盐胁迫下小麦生长及生理特征的影响,以两种不同的小麦品种DK961和TS9818为试验材料,通过不同浓度外源硅处理盐胁迫下小麦幼苗,分析其生长特性及抗氧化酶活性.结果显示:外源硅处理浓度较低时,盐胁迫下小麦生物量及根系活力增加,细胞膜透性降低;外源硅浓度较低时,提高盐胁迫下小麦幼苗SOD、CAT、POD活性,降低丙二醛含量.较高浓度硅处理条件下,降低盐胁迫下小麦幼苗SOD、CAT、POD活性,提高丙二醛含量.说明一定浓度的外源硅能够缓解盐胁迫对小麦幼苗的危害,提高小麦抗盐能力.
In order to explore the influence of exogenous silicon on wheat growth and physiological characteristics under salt stress,two different wheat cultivars DK961 and TS9818 were used as experimental materials.The growth characteristics and activity of antioxidant enzymes of wheat seedling under salt stress processed by different concentrations of exogenous silicon was analyzed.The results showed that the exogenous silicon treatment increased the biomass and root activity of wheat under salt stress,and decreased the cell membrane permeability.The activity of SOD,CAT and POD of wheat seedlings under salt stress was increased,and the content of malondialdehyde was decreased under the lower concentration of exogenous silicon.The activity of SOD,CAT and POD of wheat seedlings under salt stress was decreased,and the content of malondialdehyde was increased under the higher concentration of exogenous silicon.It indicated that the certain concentration of exogenous silicon can alleviate the harm of salt stress to wheat seedling,and improve the resistance to salt.
作者
郑世英
梁淑霞
郑芳
李士平
潘恩敬
李东臣
ZHENG Shi-ying;LIANG Shu-xia;ZHENG Fang;LI Shi-ping;PAN En-jing;LI Dong-chen(School of Ecology and Landscape architecture,Dezhou University,Dezhou Shandong 253023,China)
出处
《德州学院学报》
2020年第2期50-53,共4页
Journal of Dezhou University
关键词
外源硅
盐胁迫
幼苗生长
抗氧化酶活性
exogenous silicon
salt stress
plant growth
anti-oxidative enzymes
