毛乌素沙地不同品种油莎豆抗旱性评价研究  

Evaluation of Drought Resistance of Different Species of Cyperus esculentus in Mu Us Sandy Land

作　　者：秦媛媛 段义忠[1] 柴乖强 鲁客 骞金龙 张宇 张高如 史建国 QIN Yuan-yuan;DUAN Yi-zhong;CHAI Guai-qiang;LU Ke;QIAN Jin-long;ZHANG Yu;ZHANG Gao-ru;SHI Jian-guo(School of Life Sciences,Yulin University,Yulin 719000;Yulin Forestry Industry Development Center,Yulin 719000)

机构地区：[1]榆林学院生命科学学院,榆林719000 [2]榆林市林业产业开发中心,榆林719000

出　　处：《温带林业研究》2021年第4期37-42,共6页Journal of Temperate Forestry Research

基　　金：陕西省教育厅科研计划项目(21JS042);榆林市科技局产学研合作项目(2019-107-2);榆林市高新区科技局项目(CXY-2020-18);榆林学院研究生创新基金项目(2020YLYCX16);陕西省林业科学院科技创新计划专项项目(SXLK2021-0236)。

摘　　要：【目的】筛选出耐旱性较强的油莎豆品种。【方法】以不同油莎豆品种XJTP、LNGWD、SHGB、HBBD、YSD为实验材料,采取15%的PEG-6000模拟干旱胁迫,分析干旱胁迫对不同品种油莎豆的株高、脯氨酸(Pro)含量、超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、过氧化物酶(POD)活性等理化指标的影响。【结果】在干旱胁迫的处理下,不同品种油莎豆的株高呈现逐渐下降的趋势;超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性及脯氨酸(Pro)含量则均呈现增高的趋势,而丙二醛(MDA)含量呈现下降的趋势。在隶属函数法分析后得知,XJTP、LNGWD、SHGB、HBBD与YSD的隶属函数值分别为0.15、0.22、0.44、0.49、0.06,因此5种油莎豆的抗旱性能的强弱由大到小排列:HBBD>SHGB>LNGWD>XJTP>YSD。【结论】该研究为榆林市毛乌素沙地地区的耐旱油莎豆品种选择提供一定的理论依据。【Objective】To screen out Cyperus esculentus varieties with strong drought tolerance.【Method】Different Cyperus esculentus varieties XJTP,LNGWD,SHGB,HBBD and YSD were used as experimental materials.15%PEG-6000 was used to simulate drought stress.The effects of drought stress on plant height,proline(Pro)content,superoxide dismutase(SOD)activity,malondialdehyde(MDA)content,peroxidase(POD)and other physicochemical indexes of different varieties of Cyperus esculentus were analyzed.【Result】Under the treatment of drought stress,the plant height of different varieties of Cyperus esculentus decreased gradually.Superoxide dismutase(SOD)activity,peroxidase(POD)activity and proline(Pro)content all showed an increasing trend,while malondialdehyde(MDA)content showed a decreasing trend.According to the membership function analysis,the membership function values of XJTP,LNGWD,SHGB,HBBD and YSD are 0.15,0.22,0.44,0.49 and 0.06,respectively.Therefore,the drought resistance of the five varieties of Cyperus esculentus is in descending order:HBBD>SHGB>LNGWD>XJTP>YSD.【Conclusion】This study provides a theoretical basis for the selection of drought-tolerant soybean varieties in Mu us Sandy Land of Yulin City.

关 键 词：油莎豆 干旱胁迫 抗旱性指标 隶属函数 

分 类 号：S565.9[农业科学—作物学]