草业科学2018，Vol.35Issue(4)：760-770,11.DOI:10.11829/j.issn.1001-0629.2017-0308
35份草本植物镉吸收与富集特征比较
Cadmium tolerance and absorption characteristic of herbaceous plants
摘要
Abstract
Thirty-five varieties of herbaceous plants were selected for studying tolerance and accumulation char-acteristics of cadmium in pot experiments using 10 mg?kg-1cadmium treatments.The plants were grown un-der conditions sheltered from rain.We found that the herbaceous plants had good tolerance against 10 mg?kg-1cadmium stress,and that the growth of only nine species was significantly inhibited in the experi-ment on herbaceous plants.In addition,root shoot ratio decreased significantly (P<0.05)in two species only. Cadmium absorption and accumulation differed among the experimental plants,and the translocation capacity of leguminous plants and warm-season turfgrass were superior to that of cool-season turfgrass.The highest cadmium content in shoots and roots were found in Crowtoe(Lotus corniculatus)and Kentucky bluegrass (Poa pratensis),respectively.The highest cadmium translocation factor was found in Lyme grass (Elymus dahuri-c um).The result of clustering analysis based on cadmium accumulation in shoots indicated that two varieties of annual ryegrass (Lolium multiflorum)have the highest cadmium accumulation among the herbaceous plants studied.关键词
草本植物/镉/镉耐性/镉吸收/镉转运/镉富集/聚类分析Key words
herbaceous plants/cadmium(Cd)/Cd tolerance/Cd absorption characteristic/Cd translocation fac-tor/Cd accumulation/cluster analysis分类
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李希铭,李金波,宋桂龙,李诗刚,濮阳雪华..35份草本植物镉吸收与富集特征比较[J].草业科学,2018,35(4):760-770,11.基金项目
深圳市铁汉生态环境股份有限公司项目(THRD008) （THRD008）
