摘要
通过分析繁殖物候、果实特性及繁殖分配的规律,研究了微塑料和Cd复合污染对龙葵繁殖特性的影响.结果表明:单一Cd污染和微塑料与Cd的复合污染均可导致龙葵开花和结果时间延后,Cd浓度越大延后时间越长;单一微塑料污染条件下龙葵的株高显著大于50 mg/kg Cd污染处理,但各处理条件下龙葵地上生物量没有显著变化;繁殖分配在对照条件下,无性繁殖部分分配比率最大,单一微塑料污染、50 mg/kg单一Cd污染、50 mg/kg Cd与1%微塑料复合污染处理条件下非繁殖部分分配比率最小,果实生物量分配比率与无性繁殖部分具有相反的变化规律,各处理对繁殖支撑物生物量分配比率没有显著影响;果穗数在50 mg/kg Cd与1%微塑料复合污染处理条件下达到最大值;成熟果和总果数量在20 mg/kg单一Cd污染处理及25 mg/kg Cd与1%微塑料复合污染处理条件下最小;成熟果重和总果重在对照条件下最小.微塑料与Cd的复合污染对龙葵繁殖特性具有重要影响.
Reproductive date,biomass allocation and fruit traits were invested to reveal the effects of microplastics(MPs)and Cd compound contamination on reproductive traits of Solanum nigrum.The results showed that single Cd and Cd with MPs compound contamination delayed the flowering and setting date.Higher concentration of Cd prolonged flowering and setting time.Plant height was higher under single MPs than that under 50 mg/kg Cd.However,the above-ground biomass were unchanged among all the treatments.The value of biomass allocation in non-reproductive part under single MPs,50 mg/kg Cd and 50 mg/kg Cd with 1%MPs were significantly lower than that under control.The fruit biomass allocation were contrary to that non-reproductive biomass allocation.There was no significantly different in biomass allocation of reproductive support.The spike numbers reached the highest value under compound contamination of 1%MPs with 50 mg/kg Cd.Ripe fruit number and total fruit number were lowest under single 25 mg/kg Cd and compound contamination of 1%MPs with 25 mg/kg Cd.The lowest values of ripe fruit and total fruit biomass occurred under control.Therefore,the contamination of MPs with Cd significantly affected the reproductive traits of Solanum nigrum.
作者
刘阳
李涵博
马昂昂
薛洪海
朱晓艳
王颖
刘滨硕
LIU Yang;LI Han-bo;MA Ang-ang;XUE Hong-hai;ZHU Xiao-yan;WANG Ying;LIU Bin-shuo(School of Municipal and Environmental Engineering,Jilin Jianzhu University,Changchun,130118,China)
出处
《东北师大学报（自然科学版）》
CAS
北大核心
2023年第3期145-149,共5页
Journal of Northeast Normal University(Natural Science Edition)
基金
吉林省自然科学基金资助项目(YDZJ202201ZYTS480)
吉林省教育厅科研项目(JJKH20210273KJ).
关键词
微塑料
重金属
龙葵
生物量分配
物候
microplastics
heavy metal
Solanum nigrum
biomass allocation
phenology
