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Position: Home > Articles > Accumulation Characteristics of Cd and Influences of Mineral Elements Absorptionin in Iris hexagona Northern Horticulture 2015 (11) 65-70

路易斯安娜鸢尾对镉的积累特性及对矿质元素吸收的影响

作  者:
韩鹰;朱旭东;邓鹏;陈刚
单  位:
扬州大学生物科学与技术学院;苏州农业职业技术学院园艺科技学院
关键词:
路易斯安娜鸢尾;镉(Cd);矿质元素;吸收;积累
摘  要:
以路易斯安娜鸢尾为试材,进行溶液培养,采用原子吸收法以及环境扫描电子显微镜和X射线电子探针的方法,研究了0、100、500μM Cd浓度处理对路易斯安娜鸢尾Cd、N、P、K、S等元素的吸收和积累特性的影响。结果表明:叶和根中Cd含量均随着Cd处理浓度的增加而增加,叶的N含量呈明显的下降趋势。根的Cd积累量显著高于叶,基部茎节是Cd积累的主要场所。经X射线电子探针分析,Cd胁迫显著抑制路易斯安娜鸢尾K的吸收,显著增加S的地上部运输,高浓度Cd处理进一步影响P的吸收。
译  名:
Accumulation Characteristics of Cd and Influences of Mineral Elements Absorptionin in Iris hexagona
作  者:
HAN Ying;ZHU Xu-dong;DENG Peng;CHEN Gang;College of Horticulture Science and Technology,Suzhou Polytechnic Institute of Agriculture;College of Bioscience and Biotechnology,Yangzhou University;
关键词:
Iris hexagona;;cadmium(Cd);;mineral elements;;absorption;;accumulation
摘  要:
Taking Iris hexagonaas test material,solution culture under 0,100,500μM Cd treatment was cultivated.The absorption and accumulation characteristics of Cd,N,P,K,S in Iris hexagona were analysed by the methods of atomic absorption spectrometry,environmental scanning electron microscope and X-ray electron probe microanalysis.The results showed that the content of Cd in leaves and roots were increased along with the increase of Cd concentration while N content in leaves was decreased.Cd accumulation in roots was significantly higher than that in leaves and the basal stem section was the main site for Cd accumulation.X-ray electron probe microanalysis indicated that the absorption of K was significantly inhibited and up-transportation of S was increased obviously under Cd stress in Iris hexagona.The absorption of P was further affected by high Cd concentration.

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