铜锌复合胁迫对番茄幼苗生长及光合特性的影响  

Effects of Copper and Zinc Combined Stress on Growth and Photosynthetic Characteristics of Solanum lycopersicum L.Seedlings

作　　者：张云芳[1] 陈楚[1] 程晓敏 陈高 ZHANG Yun-fang;CHEN Chu;CHENG Xiao-min(School of Life Sciences,Huaibei Normal University,Anhui Key Laboratory of Resources and Plant Biology,Huaibei,Anhui 235000)

机构地区：[1]淮北师范大学生命科学学院,安徽省资源植物生物学重点实验室,安徽淮北235000

出　　处：《安徽农业科学》2022年第14期139-141,152,共4页Journal of Anhui Agricultural Sciences

基　　金：安徽省高校省级自然科学研究项目(KJ2017B020)。

摘　　要：以番茄品种“金鹏一号”为试材,通过沙培试验,研究了铜锌复合胁迫对番茄幼苗生长以及光合特性的影响。结果表明,铜、锌的处理浓度为0.010~1.000 mmol/L时,番茄生长受到抑制,且抑制效应随处理浓度和时间的增加而逐渐增强;当铜、锌的处理浓度均为1.000 mmol/L且处理15 d时,与对照相比,番茄的株高、地上部鲜重和根鲜重显著下降,分别下降35.4%、48.7%和71.6%;叶片的叶绿素含量、净光合速率、气孔导度和蒸腾速率显著下降,分别减少31.3%、87.5%、94.7%、89.6%,而胞间二氧化碳浓度变化不显著。表明铜、锌浓度大于0.010 mmol/L时,番茄的生长和光合作用被抑制。Effects of copper and zinc combined stress on the growth and photosynthetic characteristics of tomato seedlings were studied through sand culture experiments with Solanum lycopersicum cultivar“Jinpeng No.1”.The results showed that,when the treatment concentration of copper and zinc was 0.010-1.000 mmol/L,tomato growth was inhibited,and the inhibitory effect gradually increased with the increase of treatment concentration and time.When the treatment concentration of copper and zinc were both 1.000 mmol/L,compared with the control,the plant height,aboveground fresh weight and root fresh weight of tomato seedlings were decreased by 35.4%,48.7%,71.6%respectively,and the chlorophyll content was decreased by 31.3%.Meanwhile,the net photosynthetic rate,stoma conductance and the transpiration rate were reduced by 31.3%,87.5%,94.7%,89.6%,while the intercellular carbon dioxide concentration did not change significantly.The results showed that when the concentration of copper and zinc is higher than 0.010 mmol/L,the growth and photosynthesis of tomato seedlings are inhibited.

关 键 词：番茄 铜锌复合胁迫 光合特性 

分 类 号：X503.231[环境科学与工程—环境工程]