海水胁迫对金银花荧光特性的影响  

Effects of Seawater Stress on Fluorescence Properties of Honeysuckle

作　　者：董祥开[1] 蔡悦 张雷[1] 王敏杰 杨丹 魏景 陈晓茹 Dong Xiangkai(Lianyungang Normal College Ocean Port College,Lianyungang 222006,China)

机构地区：[1]连云港师范高等专科学校海洋港口学院,江苏连云港222006

出　　处：《安徽农学通报》2018年第16期32-34,共3页Anhui Agricultural Science Bulletin

基　　金：2018年江苏省高等学校大学生创新创业训练计划资助项目(2017lsz17)

摘　　要：研究不同盐度海水胁迫条件对金银花的荧光特性的影响,设置4种盐度梯度海水(0.15%、0.3%、0.45%、0.6%)胁迫处理金银花植株,利用便携式荧光测定仪对金银花的叶绿素荧光参数进行测定。结果表明,在0.15%盐度海水胁迫下,初始荧光(Fo)和非光化学猝灭系数(qN)下降,最大荧光(Fm)、最大光化学效率(Fv/Fm)光化学猝灭系数(qP)升高;0.3%盐度海水胁迫下,各荧光参数与对照差异不显著;0.45%和0.6%盐度海水胁迫下,初始荧光(Fo)和非光化学猝灭系数(qN)增高,且随胁迫加重而增加,最大荧光(Fm)、最大光化学效率(Fv/Fm)、光化学猝灭系数(qP)减小,且随胁迫增加减小幅度增加。该研究初步证实金银花具有较强的耐盐性,海水盐度0.15%左右更有于金银花的生长。In order to study the effects of different salinity on the fluorescence characteristics of Lonicera japonica,we designed four different salinity of seawater(0.15%,0.3%,0.45%,0.6%)to treat Lonicera japonica.And in this study,the chlorophyll fluorescence parameters of Lonicera japonica were measured by portable fluorescence meter.The results show that:under the stress of 0.15%salinity seawater,the initial fluorescence(Fo)and non-photochemical quenching coefficients(qN)are decreased,and the maximum fluorescence(Fm),the maximum photochemical efficiency of PSⅡ(Fv/Fm),photochemical quenching coefficients(qP)are increased;under the stress of 0.3%salinity seawater,Fluorescence parameters are not significantly different from those of control;under the stress of 0.45%and 0.6%salinity seawater,Fo and qN are decreased,Fm,Fv/Fm and qP are increased.What is more,the greater the salinity,the more obvious inhibition.In conclusion,this study confirms that Lonicera japonica has strong salt tolerance,and initially reveals the self-protection mechanism of Lonicera japonica under adversity,and when the salinity of seawater is about 0.15%,it is more favorable for the growth of Lonicera japonica.

关 键 词：金银花 荧光特性 海水胁迫 

分 类 号：S567.79[农业科学—中草药栽培]