摘要
为探明镉在不同细度苎麻种质体内的积累与富集性差异,对20个苎麻种质进行镉污染大田试验。结果表明:供试苎麻种质镉富集系数的变幅为0.97~1.58,富集系数较高的分别是中细度种质‘新1号’‘中苎1号’和高细度种质‘湘饲纤兼用苎麻1号’,富集系数依次为1.58、1.55、1.54,属于镉高富集苎麻种质,镉富集系数(0.97)最小的是高细度种质‘黄平青麻’;供试苎麻种质镉转运系数的变幅为0.66~1.41,转运系数最高的是中细度种质‘耒阳青麻’,其转运系数为1.41;供试苎麻种质年镉积累量的变幅为10.24~21.87 g/hm^2,筛选出高积累镉苎麻种质‘C’‘中苎1号’和‘多倍体1号’,其年镉积累量分别为21.87、19.87、18.75 g/hm^2。综合分析,苎麻纤维细度不影响其镉富集能力。
In order to clarify the accumulation,transfer and enrichment of heavy metal cadmium in ramie germplasm withdifferent fineness,Cadmium contaminated field experiment was carried out with20ramies germplasms with differentfineness.The results showed that the cadmium enrichment coefficient of the ramies germplasms was among0.97–1.58,and its highest were‘Xin1#(medium fineness)’,‘Zhongzhu1#(medium fineness)’,and‘xiangsixianzhuma1#(highfineness)’,the enrichment coefficient followed by1.58,1.55,1.54in turn,the Minimum cadmium enrichment coefficientwas‘Huangpingqingma(high fineness)’,and its enrichment coefficient was0.97.The cadmium transfer coefficient of theramies germplasms was among0.66and1.41,and the highest was‘Leiyangqingma(medium fineness)’,the transfercoefficient was1.41.The cadmium accumulation ability in the ramies germplasms l was among10.24–21.87g/hm2,andits highest of ramies germplasms followed in turn was‘C’,‘Zhongzhu1#’and‘Duobeiti1#’.And the cadmiumaccumulation ability were21.87,19.87,18.75g/hm2in turn respectively.The results showed that the fiber fineness oframie germplasm does not affect its ability of cadmium enrichment.
作者
符慧琴
揭红东
揭雨成
邢虎成
温圣贤
FU Huiqin;JIE Hongdong;JIE Yucheng;XING Hucheng;WEN Shengxian(Institute of Ramie,Hunan Agricultural University,Changsha 410128,China;College of Agronomy,Hunan Agricultural University,Changsha 410128,China;College of Horticulture and Landscape, Hunan Agricultural University,Changsha 410128,China)
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第4期359-365,共7页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家自然科学基金项目(31371704)
湖南省耕地重金属污染防治机理研究与技术优化集成课题
湖南省镉低积累农作物种质筛选与选育项目"苎麻镉高吸收种质筛选及配套技术研究与综合利用安全性评价"
关键词
苎麻
纤维细度
镉富集
镉吸收
镉积累
ramie
fiber fineness
cadmium enrichment ability
cadmium absorption
cadmium accumulation
