镉胁迫对水稻生长发育的影响及伤流液与稻米镉含量的相关性研究

doi:10.19741/j.issn.1673-4831.2018.0104

生态与农村环境学报 ›› 2019, Vol. 35 ›› Issue (1): 76-82.doi: 10.19741/j.issn.1673-4831.2018.0104

镉胁迫对水稻生长发育的影响及伤流液与稻米镉含量的相关性研究

彭鸥^1,2,3, 李丹阳^1,2,3, 刘寿涛^1,2,3, 罗海艳^1,2,3, 魏祥东^1,2,3, 叶长城^1,2,3, 刘孝利^1,2,3, 铁柏清^1,2,3, 陈文艳⁴

1. 湖南农业大学资源环境学院, 湖南长沙 410128;
2. 重金属污染耕地安全高效利用湖南省工程研究中心, 湖南长沙 410128;
3. 农业部南方产地污染防控重点实验室, 湖南长沙 410128;
4. 茶陵县农业局, 湖南株洲 412400

收稿日期:2018-03-09 出版日期:2019-01-25 发布日期:2019-01-22
通讯作者: 陈文艳 E-mail:tiebq@qq.com
作者简介:彭鸥(1992-),男,湖南邵阳人,硕士生,研究方向为环境污染治理与修复。E-mail:hanhexiaou@foxmail.com
基金资助:
国家重点研发计划（2017YFD0801505）；农业部、财政部专项（20160418）；湖南省科技计划（2016NK2107）

Effects of Cadmium Stress on Rice Growth and Correlation Between Bleeding Sap and Cadmium Content in Rice

PENG Ou^1,2,3, LI Dan-yang^1,2,3, LIU Shou-tao^1,2,3, LUO Hai-yan^1,2,3, WEI Xiang-dong^1,2,3, YE Chang-cheng^1,2,3, LIU Xiao-li^1,2,3, TIE Bai-qing^1,2,3, CHEN Wen-yan⁴

1. College of Resources and Environment of Hunan Agricultural University, Changsha 410128, China;
2. Engineering Research Center of Safe and Efficient Utilization of Heavy Metal Polluted Farmland, Hunan Province, Changsha 410128, China;
3. Key Laboratory of Southern China Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Changsha 410128, China;
4. Chaling County Bureau of Agriculture, Zhuzhou 412400, China

Received:2018-03-09 Online:2019-01-25 Published:2019-01-22
Contact: 35 E-mail:tiebq@qq.com

摘要/Abstract

摘要：

立足于我国水稻受镉污染的实际情况，研究镉胁迫对水稻生长发育的影响，并探讨伤流液镉含量与稻米镉含量之间的关系，为镉污染地区稻米安全生产提供数据支持和科学指导。采用营养液培育试验方法，选择中嘉早17和泰优390两个水稻品种，设置CK（0 μg·L^-1）、Cd10（10 μg·L^-1）、Cd50（50 μg·L^-1）、Cd200（200 μg·L^-1）、Cd500（500 μg·L^-1）和Cd1000（1 000 μg·L^-1）6个Cd浓度处理，分析不同浓度镉胁迫对水稻生长发育的影响以及各部位镉含量与糙米镉含量的相关性。结果表明，与CK相比，ρ（Cd）≤ 10 μg·L^-1处理对水稻生长有促进作用，但未达显著水平（P>0.05），当ρ（Cd）>10 μg·L^-1时有抑制作用，Cd浓度越高，抑制作用越明显。水稻各部位镉含量随着镉胁迫浓度的增大而增大，伤流液中镉含量增加幅度与各部位变化趋于一致。伤流液镉含量与糙米镉含量之间存在极显著正相关（P<0.01），且在分蘖期伤流液镉含量能较好地用于预测水稻镉毒害程度。

关键词: 镉, 水稻, 生育期, 营养液培育, 伤流液

Abstract:

The effects of cadmium (Cd) stress on growth of rice and the correlation between the Cd in bleeding sap and rice were studied by considering the actual situation of Cd pollution in rice in China, which will provide data support and scientific guidance for the safety of rice production in Cd-contaminated areas. Effects of different Cd concentrations (0, 10, 50, 200, 500 and 1 000 μg·L^-1) on the growth of two rice varieties (Zhongjiazao No. 17 and Taiyou No. 390) and correlation between Cd content in different parts of rice and the brown rice were studied under nutrient solution culture condition. Results show that positive effect of Cd on rice growth was detected at the treatment with a Cd concentration of ≤ 10 μg·L^-1 and no significant difference (P>0.05) was found between the Cd-treated smples and the control. The growth of rice was inhibited at Cd concentration of >10 μg·L^-1 and the inhibitory effect was increased with the increase in Cd concentration. The Cd content in each part of rice was also increased with the increase in Cd concentration, and the change of Cd content in bleeding sap was consistent with that in each part of rice plant. Significant correlation (P<0.01) was detected between Cd content in the bleeding sap and brown rice. And the Cd content in the bleeding sap at tillering stage could be used to predict the degree of Cd contamination of rice.

Key words: Cd, rice, growth stage, hydroponics, bleeding sap

中图分类号:

彭鸥, 李丹阳, 刘寿涛, 罗海艳, 魏祥东, 叶长城, 刘孝利, 铁柏清, 陈文艳. 镉胁迫对水稻生长发育的影响及伤流液与稻米镉含量的相关性研究[J]. 生态与农村环境学报, 2019, 35(1): 76-82.

PENG Ou, LI Dan-yang, LIU Shou-tao, LUO Hai-yan, WEI Xiang-dong, YE Chang-cheng, LIU Xiao-li, TIE Bai-qing, CHEN Wen-yan. Effects of Cadmium Stress on Rice Growth and Correlation Between Bleeding Sap and Cadmium Content in Rice[J]. Journal of Ecology and Rural Environment, 2019, 35(1): 76-82.

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镉胁迫对水稻生长发育的影响及伤流液与稻米镉含量的相关性研究

Effects of Cadmium Stress on Rice Growth and Correlation Between Bleeding Sap and Cadmium Content in Rice

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