模拟酸雨对假俭草叶绿素荧光特性的影响  

Effects of Simulated Acid Rain on Chlorophyll Fluorescence Characteristics in Eremochloa ophiuroides

作　　者：马博英[1] 徐礼根[2] 蒋德安[2] 

机构地区：[1]浙江教育学院生物系,杭州310012 [2]浙江大学生命科学学院植物生理与生物化学国家重点实验室,杭州310058

出　　处：《林业科学》2006年第11期8-11,共4页Scientia Silvae Sinicae

基　　金：浙江省科技厅重大攻关项目(2004C13001);浙江省交通厅科技计划项目(2005H025);浙江省国土资源厅百矿示范项目(2005003);浙江省教育厅科研计划项目(20060330);温州市科技局重点科技计划项目(S2004B028)

摘　　要：研究模拟酸雨(pH2.5、pH3.0)对假俭草叶绿素荧光特性的影响。结果表明:酸雨6h胁迫引起假俭草PSⅡ最大光化学效率(Fv/Fm)、PSⅡ潜在活性(Fv/F0)、光化学猝灭系数(qP)、PSⅡ电子传递量子产率(ФPSⅡ)、光合电子传递速率(ETR)和非光化学猝灭系数(NPQ)下降,pH2.5处理比pH3.0处理的下降幅度大;酸雨处理停止24h后,Fv/Fm、Fv/F0、qP、ФPSⅡ、ETR、NPQ回升;酸雨处理停止48h后,回升至接近对照。研究还表明,利用非损伤的叶绿素荧光技术可快速检测草对环境因子变化的响应。Eremochloa ophiuroides was used to study the effects of acid rain stress on chlorophyll fluorescence characteristics. The results showed that maximal photochemical efficiency of PSⅡ （ Fv/Fm ）, potential activity of PS Ⅱ （ Fv/F0 ）, photochemical quenching （qP）, quantum yield of PSⅡ electron transport （ФPSⅡ）, electron transport rate of PS Ⅱ （ETR）, non-photochemical quenching （NPQ） in leaves were reduced after 6 h stress with acid rain. The decline of above parameters in treatment with pH 2.5 were faster and larger than that with pH3.0. Fv/Fm , Fv/ F0 , q P ,ФPSⅡ ETR, NPQ in treatment began to be gradually recovered after the treatment ended for 24 h, and up to the level of control after the treatment ended for 48 h. The results also demonstrated the potential use of this fast and noninvasive techniques chlorophyll fluorescence to screen fot different acid rain tolerant genotypes and to detect the physiological response of grasses to different environmental factors.

关 键 词：模拟酸雨 假俭草 叶绿素荧光 

分 类 号：Q945[生物学—植物学] S688.4[农业科学—观赏园艺]