河南农业科学2017，Vol.46Issue(9)：25-29,5.DOI:10.15933/j.cnki.1004-3268.2017.09.005
不同玉米品种镉积累及运移差异性研究
Study on the Differences in Cadmium Accumulation and Transport among Maize Cultivars
摘要
Abstract
Field experiment in cadmium(Cd) polluted farmland was conducted to study differences in Cd transportation and accumulation among cultivars by using twenty-five maize cultivars.The results showed that twenty-one cultivars of grain Cd content could meet the hygienic standard for grains GB 2715-2005(0.1 mg/kg or less),but only eight cultivars(Jidan 7 and Nonghua 101,Zhengdan 136,Zhenghan 358,Zhengdan 958,Liyu 37,Liyu 13,Xianyu 335) could reach the hygienic limit standard for grains NY 861-2004(0.05 mg/kg or less).The contents of the Cd for different maize organs in descending order were the root,the stem leaf,and the grain.Further study on the transportation and accumulation of heavy metal confirmed that the differences among cultivars in grain Cd content mainly depended on the Cd transfer capacity from the stem leaf to the grain.These eight cultivars had an average transport coefficient from root to seed of 0.002 9 and enrichment coefficient for seed of 0.007 1.Among them,Jidan 7 and Nonghua 101 have low-accumulation characteristics.关键词
玉米/镉/低积累/吸收/转运Key words
maize/Cd/low accumulation/uptake/transport分类
农业科技引用本文复制引用
张彪,段恩忠,师振亚,程海宽,周志云,周振,孙晓雪,苗丽娟,杨素勤..不同玉米品种镉积累及运移差异性研究[J].河南农业科学,2017,46(9):25-29,5.基金项目
河南省科技攻关计划项目(162102110127) （162102110127）
国家自然科学基金项目(41571320) （41571320）
河南农业大学科技创新基金项目(KJCX2016A15) （KJCX2016A15）
