朱砂叶螨危害对木薯幼苗光合作用及叶绿素荧光参数的影响  

Effects of Tetranychus cinnabarinus stress on photosynthesis and chlorophyll fluorescence properties of cassava seedling

作　　者：梁琼月[1,2] 董蒙蒙 何冰[1] 顾明华[1,2] 陈立[1,2] 杨娟[1,2] 赖艳 曾玮 

机构地区：[1]广西大学农学院,广西南宁530004 [2]广西大学植物科学国家级实验教学示范中心,广西南宁530004

出　　处：《广东农业科学》2017年第9期89-93,共5页Guangdong Agricultural Sciences

基　　金：广西自然科学基金(2014GXNSFBA118103;2016GXNSFBA380220);亚热带农业生物资源保护与利用国家重点实验室开放课题(OSKL201501)

摘　　要：研究了朱砂叶螨(Tetranychus cinnabarinus)危害对不同木薯品种光合作用及叶绿素荧光参数的影响。结果表明:与健康植株相比,随着危害时间的延长,4个木薯品种净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)、最大荧光(Fm)和PSII最大光化学效率(Fv/Fm)均降低,其中Pn降低2.57~7.62 umol/m^2·s,Tr降低0.13~1.28 mmol/m^2·s,Gs降低0.020~0.176 umol/m^2·s,Fm降低0.031~0.241,Fv/Fm降低0.037~0.11,而胞间CO2浓度(Ci)和初始荧光(Fo)升高,其中Ci升高3.51~158.5μmol/mol,Fo升高0.023~0.09。4个木薯品种光合特性及叶绿素荧光参数不存在差异。The paper studied the photosynthesis and chlorophyll fluorescence parameters of cassava seedling after Tetranychus cinnabarinus harm. The results showed that: compared with control,the Pn,Tr,Gs,Fm,Fv/Fm of cassava declined,Pn decreased to 2.57-7.62 umol/m^2·s,Tr decreased to 0.13-1.28 mmol/m^2·s,Gs decreased to 0.020-0.176 umol.m^2·s,Fm decreased to 0.031-0.241,Fv/Fm decreased to 0.037-0.11,while Ci and Fo increased,Ci increased to 3.51-158.5 μmol/mol,Fo increased to 0.023-0.09. There was no difference in the photosynthetic traits and parameters of chlorophyll fluorescence of four cassave varieties.

关 键 词：朱砂叶螨 木薯 光合特性 叶绿素荧光 危害 

分 类 号：S533.01[农业科学—作物学]