NaCl胁迫对鹅观草苗期生理生化物质的影响  

Effects of NaCl Stress on Physiological and Biochemical Substance of Three Species of Roegneria

作　　者：解继红[1] 德英[1] 穆怀彬[1] 戴雅婷[1] 陈景芋[2] 镡建国 杨凯 

机构地区：[1]中国农业科学院草原研究所,内蒙古呼和浩特010010 [2]新疆农业大学草业与环境科学学院,新疆乌鲁木齐830052 [3]内蒙古草原工作站,内蒙古呼和浩特010017

出　　处：《中国草地学报》2013年第5期152-155,共4页Chinese Journal of Grassland

基　　金：中央级公益性科研院所基本科研业务费专项资金(中国农业科学院草原研究所)资助项目

摘　　要：以NaCl为胁迫因子,设置0mmol/L、30mmol/L、60mmol/L、90mmol/L、120mmol/L、150mmol/L、180mmol/L 7个盐浓度梯度,对鹅观草属大芒鹅观草、肃草、偏穗鹅观草三种植物进行耐盐试验,通过测定植株的生理生化指标,对供试材料进行耐盐性比较研究。试验结果表明,低盐浓度对它们的影响极小,与对照相比无明显差异,随着NaCl浓度的增高,鹅观草的叶绿素含量、电导率、脯氨酸含量随之增加,而SOD值、POD值出现先升高后下降的曲线。综合分析表明:偏穗鹅观草耐盐性最强,大芒鹅观草耐盐性最弱,肃草介于二者之间。The salt tolerance of Roegneria, which were tested under 0, 30, 60, 90, 120, 150, 180rnmol/L salt of NaCI concentration by rneasuring_p_hysiological and biochemical indexes. The experi- mental results showed that the effect of low salt （30mmol / L） on three species of Roegneria was little; the effect of high salt concentrations on three species of Roegneria was significant, leaf relative water con- tent, chlorophyll decreased, RWC, proline increased, SOD and POD increased at beginning, then de- creased. The result indicated that R. komarovii （Nevski）Nevski had the strongest salt-tolerance, and R. turczaninovii （Drob）Nevski vat. macrathera Ohwi was the weakest, and R. stricta Keng f. stricta was in the middle.

关 键 词：鹅观草属 NACL胁迫 耐盐性 生理生化物质 

分 类 号：S543.2[农业科学—作物学]