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生态学杂志 ›› 2023, Vol. 42 ›› Issue (1): 123-130.doi: 10.13292/j.1000-4890.202212.005

• 研究报告 • 上一篇    下一篇

基于定量评价方法研究不同水稻品种的镉积累差异

陈志琴1,刘奇珍1,张世君1,陆利民3,陆萍4,金海洋2,黄璐璐2,杨肖娥1*


  

  1. 1浙江大学环境与资源学院污染环境修复与生态健康教育部重点实验室, 杭州 310013;2上海市农业技术推广服务中心, 上海201103; 3上海市浦东新区农业技术推广中心, 上海 201201; 4上海市嘉定区农业技术推广服务中心, 上海 201899)

  • 出版日期:2023-01-10 发布日期:2023-02-01

Cadmium accumulation in different rice varieties based on quantitative evaluation method.

CHEN Zhi-qin1, LIU Qi-zhen1, ZHANG Shi-jun1, LU Li-min3, LU Ping4, JIN Hai-yang2, HUANG Lu-lu2, YANG Xiao-e1*   

  1. (1Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education (MOE), College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310013, China; 2Shanghai Agricultural Technology Extension Service Center, Shanghai 201103, China; 3Shanghai Pudong New District Agricultural Technology Extension Center, Shanghai 201201, China; 4Shanghai Jiading District Agricultural Technology Extension Service Center, Shanghai 201899, China).

  • Online:2023-01-10 Published:2023-02-01

摘要: 为筛选出高产且适用于粮食安全生产的镉低积累水稻品种,本研究以18个早、中、晚熟稻品种为供试材料,比较了不同品种水稻在中轻度镉污染农田的生长情况以及对镉吸收、积累差异,并通过综合定量评价方法进行评估。结果表明:根据综合定量筛选评价方法将糙米镉浓度、稻谷产量、转运系数和秸秆积累量作为评价指标并赋予不同权重,通过计算综合得分筛选出的高产且镉低积累水稻品种有JR-9(沪香粳106)、JR-2(沪早香软1号)、JR-7(8333)、JR-15(宝农34)和JR-8(南梗9108);品种JR-8水稻产量最高,品种JR-9、JR-7和JR-15水稻产量均显著高于其他品种;不同水稻品种的稻米镉含量差异较大,JR-9、JR-15、JR-7稻米镉含量显著低于其他水稻品种;品种JR-2转运系数最低,更多的镉保留在秸秆中,表现出最高的秸秆积累量,最终成为候选品种。本研究采用的综合定量评价方法可对高产、低Cd的水稻品种进行科学评价,并初步筛选了5个适用于中轻度Cd污染农田推广的Cd低积累水稻品种,其稻米Cd含量达到国家粮食安全限量标准。


关键词: 水稻, 吸收累积Cd, 秸秆移除, 品种差异, 定量评价筛选

Abstract: The high-yielding and Cd resistant cultivars have great implications for ensuring food security. In this study, the screening process on eighteen rice cultivars were carried out in the moderately and slightly Cd-contaminated field through a comprehensive quantitative evaluation (CQE) method. We considered differences in yield, Cd uptake, transfer factor (TF), and accumulation in cultivars with different weights for these evaluation indices. The results showed that JR-9 (Hu Xiangjing 106), JR-2 (Hu Zaoxiang Ruan-1), JR-7 (8333), JR-15 (Baonong 34) and JR-8 (Nan Jing 9108) exhibited high-yield and low-Cd-accumulation as assessed by the CQE method. JR-8 showed the maximum yield, followed by JR-9, JR-7, and JR-15 compared to the other cultivars. The Cd contents varied in different rice cultivars, with lower contents in the JR-9, JR-15 and JR-7 than the other cultivars. JR-2 showed the lowest TF value and the highest straw Cd accumulation, thus representing high-yield and low-Cd-accumulation rice cultivar. The CQE method can scientifically evaluate high-yield and low-Cd-accumulation rice cultivars. The five rice cultivars screened out in this study can be recommended as low Cd accumulation cultivars for moderately and slightly Cd contaminated croplands to fulfill the national food safety limit standard for Cd contents in rice.


Key words: rice, cadmium uptake and accumulation, straw removal, genotypic difference, comprehensive quantitative evaluation method.