铅和镉复合胁迫下玉米对镉吸收特性

生态学杂志

铅和镉复合胁迫下玉米对镉吸收特性

曹莹;黄瑞冬;李建东;赵天宏;郭伟;王国骄

沈阳农业大学农学院，沈阳 110161

收稿日期:2005-04-28 修回日期:2006-08-21 出版日期:2006-11-10 发布日期:2006-11-10

Cadmium absorption characteristics of Zea mays under combined stress of lead and cadmium

CAO Ying;HUANG Ruidong;LI Jiandong; ZHAO Tianhong;GUO Wei;WANG Guojiao

College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China

Received:2005-04-28 Revised:2006-08-21 Online:2006-11-10 Published:2006-11-10

摘要/Abstract

摘要： 在盆栽条件下，以富友1号玉米品种为供试试材，研究了铅、镉复合胁迫下玉米对镉的吸收特性。结果表明，复合污染条件下，镉在玉米体内分布的一般规律是根>下叶>茎>上叶>籽粒，且植株各部位含镉量普遍高于镉单子污染，但随土壤中投放铅浓度的增加（0～540 mg·kg^-1），植株体内各部位含镉量呈先升高后下降趋势。从玉米的生育进程来看，玉米各部位镉含量分配规律是拔节期>开花期>成熟期（上叶除外）。

关键词: 具齿原甲藻, 东海原甲藻, 中国东海

Abstract: A pot experiment with maize variety Fuyou 1 showed that under the combined stress of lead and cadmium, the accumulation of cadmium in different parts of plant and at different development stages was in the order of root>down-leaf>stem>up-leaf>grain and of jointing stage>flowering stage>ripening stage. The cadmium content in plant was generally higher under combined stress than under single cadmium stress, but increased first while decreased when the lead content in soil increased from 0 to 540 mg·kg^-1.

Key words: Prorocentrum dentatum Stein, Prorocentrum donghaiense Lu, East China Sea

曹莹;黄瑞冬;李建东;赵天宏;郭伟;王国骄. 铅和镉复合胁迫下玉米对镉吸收特性[J]. 生态学杂志.

CAO Ying;HUANG Ruidong;LI Jiandong; ZHAO Tianhong;GUO Wei;WANG Guojiao. Cadmium absorption characteristics of Zea mays under combined stress of lead and cadmium[J]. cje.