Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (1): 76-82.doi: 10.19741/j.issn.1673-4831.2018.0104

Previous Articles     Next Articles

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

PENG Ou1,2,3, LI Dan-yang1,2,3, LIU Shou-tao1,2,3, LUO Hai-yan1,2,3, WEI Xiang-dong1,2,3, YE Chang-cheng1,2,3, LIU Xiao-li1,2,3, TIE Bai-qing1,2,3, CHEN Wen-yan4   

  1. 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


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

CLC Number: