9种植物对钴的吸收转运特征研究  

Study on the Absorption and Transport Characteristics of Cobalt in Nine Plants

作　　者：伏毅[1] 蒲磊 卜姝文 王巍 黄雪晴 邱娅璐 FU Yi;PU Lei;BU Shu-wen(Irradiation Preservation Key Laboratory of Sichuan Province,Sichuan Institute of Atomic Energy,Chengdu,Sichuan 610101)

机构地区：[1]四川省原子能研究院辐照保藏四川省重点实验室,四川成都610101

出　　处：《安徽农业科学》2023年第15期82-84,共3页Journal of Anhui Agricultural Sciences

基　　金：四川省科技计划项目(2016SZ0075,2017JY0242,2021JDR0014)。

摘　　要：[目的]探讨Co胁迫条件下植物对重金属Co的吸收转运特征。[方法]通过盆栽试验,分析田菁、紫花苜蓿、猪屎豆、毛苕子、大豆、绿花菜、番茄、红甜菜、空心莲子草9种植物在Co胁迫条件下对Co的吸收转运能力。[结果]Co胁迫条件下,各个植物地上部、根部Co含量均极显著高于对照(P<0.01),其中大豆(开8157)地上部Co含量增幅最大,是对照的26.5倍,增幅最小的是空心莲子草,是对照的5.7倍;空心莲子草根部Co含量增幅最大,是对照的567.4倍,增幅最小的是番茄,是对照的16.3倍。在Co胁迫处理条件下,除紫花苜蓿、大豆(丰豆5号)由于对照组根部Co含量低于检出值无法计算转移系数外,其他7种植物的Co转移系数均显著低于对照(P<0.05),其中转移系数降低最多的为空心莲子草,仅为对照的1.0%,降低最少的为田菁,为对照的48.5%,4个品种大豆的转移系数均极显著降低,均小于等于0.10。[结论]除紫花苜蓿、大豆(丰豆5号)外,其余7种植物在Co胁迫条件下地上部、根部Co含量显著增加,转移系数显著降低。[Objective]To explore the absorption and transport characteristics in Co stressed plant.[Method]The ability of cobalt absorption and transport were evaluated in 9 plants including Sesbania cannabina,Medicago sativa,Crotalaria pallida,Vicia villosa,Glycine max,Brassica oleracea,Solanum lycopersicum,Beta vulgaris and Alternanthera philoxeroides with pot experiment.[Result]Under the condition of Co stress,the Co content in the shoot and root of each plant was significantly higher than that of the control(P<0.01),the Co content most increased in Glycine max(Kai 8157)shoot,26.5 times that of the control,and the lowest increased in Alternanthera philoxeroides,5.7 times that of the control;the Co content most increased in Alternanthera philoxeroides root,567.4 times that of the control,and the smallest increased in Solanum lycopersicum,16.3 times that of the control.Under the condition of Co stress,except for Medicago sativa and Glycine max(FD5),which could not calculate the transfer coefficient because the root Co content of the control group was lower than the detected value,the Co transfer coefficient of 7 plants was significantly lower than that of the control(P<0.05),among them,the transfer coefficient of Alternanthera philoxeroides decreased the most,which was only 1.0% of the control,and that of Sesbania cannabina was the least,which was 48.5% of the control.The transfer coefficient of the four varieties of Glycine max was significantly decreased,which was less than or equal to 0.10.[Conclusion]Except for M.sativa and G.max(FD5),the content of Co in the shoot and root of the other seven plants increased significantly,and the transfer coefficient decreased significantly under the condition of Co stress.

关 键 词：钴 重金属 植物 转移系数 吸收转运特征 

分 类 号：X173[环境科学与工程—环境科学]