不同浓度的镉和铅对烟草种子萌发的影响  

Effects of Cadmium and Lead on Seed Germination of Tobacco Seed

作　　者：熊明月 岳志强 丁榆 徐丹 宋亚楠 徐锐[1] 杨云 韩飞[1,2,3] 黄晶心 XIONG Mingyue;YUE Zhiqiang;DING Yu;XU Dan;SONG Yanan;XU Rui;YANG Yun;HAN Fei;HUANG Jingxin(College of energy and Environmental Sciences,Yunnan Normal University,Kunming 650500,China;Yunnan Provincial Observation and Research Station of Soil Degradation and Restorztion for Cultivating Plateau Traditional Chese Medicinal Plants,Yunnan Normal University,Kunming 650500,China;Yunnan Provincial Renewable Energy Engineering Key Laboeatory,Yunnan Normal University,Kunming 650500,China;Yuxi Agricultural Environmental Protection and Rural Energy Workstation,Yuxi 631500,China;Baoshan Longyang Rural Energy Station,Baoshan 678000,China;Wenshan Zhuang and Miao Autonomous Prefecture Academy of Agricultural Sciences,Wenshan 663099,China)

机构地区：[1]云南师范大学能源与环境科学学院,云南昆明650500 [2]云南师范大学高原特色中药材种植土壤质量演变退化与修复云南省野外科学观测研究站,云南昆明650500 [3]云南师范大学云南省农村能源工程重点实验室,云南昆明650500 [4]玉溪市农业环境保护和农村能源工作站,云南玉溪653100 [5]保山市隆阳区农村能源工作站,云南保山678000 [6]文山壮族苗族自治州农业科学院,云南文山663099

出　　处：《云南师范大学学报（自然科学版）》2023年第2期57-61,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(31800443);云南省大学生创新创业训练计划资助项目(202010681098,202010681014,202010681039);云南师范大学研究生科研创新基金资助项目(YJSJJ21-B91).

摘　　要：通过水培试验法研究了Cd^(2+)(0、2、4、8 mg/L和16 mg/L)和Pb^(2+)(0、5、10、15 mg/L和20 mg/L)对烟草(云烟87号)种子萌发及幼苗生长的影响.结果显示Pb^(2+)抑制云烟87种子的萌发,其浓度在15 mg/L时烟草种子的发芽势和发芽指数出现明显下降;Cd^(2+)对云烟87种子的萌发无明显抑制作用,并且对云烟87种子的发芽势呈现促进作用.Pb和Cd均抑制云烟87幼苗的生长,且云烟87幼苗的死亡率随Pb^(2+)和Cd^(2+)浓度的升高而升高.在水培条件下,云烟87种子对重金属的耐受性高于云烟87幼苗.In order to explore the effects of different concentrations of cadmium(Cd)and lead(Pb)on the germination and seedling growth of tobacco seeds(Yunyan 87),this experiment studied the effects of Cd^(2+)(0 mg/L,2 mg/L,4 mg/L,8 mg/L,16 mg/L)and Pb^(2+)(0 mg/L,5 mg/L,10 mg/L,15 mg/L,20 mg/L)on the seed germination and seedling growth of tobacco(Yunyan 87)through water culture.The results of this study showed that Pb inhibited the germination of Yunyan 87,and the germination potential and germination index of tobacco seeds decreased significantly when the concentration of Pb was 15mg/L;Cd did not significantly inhibit the germination of Yunyan 87,and promoted the germination potential of Yunyan 87 seeds.Pb and Cd inhibited the growth of Yunyan 87 seedlings,and the mortality of Yunyan 87 seedlings increased with the increase of Pb^(2+)and Cd^(2+)concentrations.Under the condition of hydroponics,the tolerance of Yunyan 87 seeds to heavy metals was higher than that of Yunyan 87 seedlings.

关 键 词：镉 铅 烟草种子 种子萌发 重金属污染 

分 类 号：Q945.79[生物学—植物学] X53[环境科学与工程—环境工程]