| 李沛然1，龚颖婷1，黄丽颖1，赖叶林1，杨存义1，2，年 海1，2，牟英辉1，2.大豆镉累积及吸收转运特性研究[J].广东农业科学,2016,43(5):82-87 |
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大豆镉累积及吸收转运特性研究 |
| Study on characteristics of cadmium accumulation and absorption in soybean |
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| DOI：10.16768/j.issn.1004-874X.2016.05.016 |
| 中文关键词: 大豆 镉胁迫 农艺性状 吸收 转运 |
| 英文关键词: |
| 基金项目: |
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| 摘要点击次数: 1968 |
| 全文下载次数: 815 |
| 中文摘要: |
| 重金属污染已严重威胁人们的食品质量与安全，亟需对农作物的镉积累及吸收转运特征进行研究。在4 种外源镉（CdCl2）添加量（0、1、2、3 mg/kg）条件下，探究3 个品种大豆的农艺性状、镉积累量以及转运特征，对3 种基因型大豆（HC6、HHN、HX3）在镉胁迫下的重金属抗性进行评价，为实际生产和理论研究提供依据。结果表明，当外源土壤镉含量为0～1.84 mg/kg 时，镉对不同基因型大豆的农艺性状无显著影响，3 种不同基因型大豆的耐镉性表现为HNH ＞ HC6 ＞ HX3，大豆根、茎、叶、荚的镉含量随土壤镉含量增加而升高；在相同土壤镉含量条件下，大豆各器官的镉含量存在显著差异，表现为根＞茎＞叶＞荚＞籽粒。
关键词：大豆；镉胁迫；农艺性状；吸收；转运
中图分类号：S565.1 文献标识码：A 文章编号：1004-874X（2016）05-0082-05 |
| 英文摘要: |
| The pollution of heavy metals has threatened our food quality and security，it is necessary to research the characteristics of accumulation，absorption and translation of cadmium in crops. The study evaluated the tolerance of 3 genotypic of soybeans towards cadmium，in order to provide foundation for practice production and theory research. Four
adding amounts（ 0，1，2，3 mg/kg） of exogenous cadmium（CdCl2）were set，3 genotypic of soybeans（ HC6，HX3，
HNH）were used，the cadmium contents in different organs of soybean and soil were measured. The results showed
that，when the exogenous cadmium content in soil was from 0 mg/kg to 1.84 mg/kg，cadmium had no significant effect on
agronomic traits of 3 different genotypic of soybeans. The tolerance order towards cadmium was HNH>HC6>HX3. The
cadmium content of root，stalk，leaf and pod increased with the increase of soil cadmium content. The cadmium content
in soybean’s organs differs a lot from each other in the same treatment，ranked in root，stalk，leaf and pod. |
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