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Variations in growth and cadmium accumulation among 30 wheat(Triticum aestivum L.) cultivars during the grain filling stage
Received:August 17, 2020  
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KeyWord:wheat;Cd;uptake;translocation;low-Cd cultivars
Author NameAffiliationE-mail
PAN Jian-qing Agricultural Technology Extension Service Station of Changxing County, Changxing 313100, China  
LU Min Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education(MOE), College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310013, China lumin_1994@163.com 
YANG Xiao-e Key Laboratory of Environmental Remediation and Ecosystem Health, Ministry of Education(MOE), College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310013, China xeyang@zju.edu.cn 
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Abstract:
      In this study, 30 wheat cultivars planted in Cd-contaminated farmland were used as materials to study the growth and differences in Cd accumulation among different wheat cultivars during the grain filling period. The results showed that the 30 wheat cultivars all grew well under Cd pollution, and there were significant differences in plant height and biomass during the filling period. Different tissues of different wheat cultivars showed clear variations in their ability to uptake and accumulate Cd. At the filling stage, the pattern of Cd distribution in wheat was generally roots > shoots. The Cd translocation ability among different tissues varied clearly among different wheat cultivars. Huaimai23, Jimai738, and Ningmai17 exhibited lower shoot to leaf translocation factors. The maturity results indicated that the above three wheat cultivars could be identified as low-Cd wheat cultivars; the Cd concentrations in the grains were below the limit values(0.1 mg·kg-1 DW) set by China's Ministry of Environmental Protection, and they also showed lower TFrs values(< 1). In this study, Huaimai23, Jimai738, and Ningmai17 were initially identified as candidates for low-transport wheat cultivars, thereby providing a scientific basis for screening low-accumulation wheat cultivars.