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Foliar Application of Zn-EDTA at Early Filling Stage to Increase Grain Zn and Fe, and Reduce Grain Cd, Pb and Grain Yield in Rice (Oryza sativa L.).
Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2020-08-01 , DOI: 10.1007/s00128-020-02949-z
Zhongyuan Wang 1, 2 , Hui Wang 1, 3 , Chao Xu 1 , Guanghui Lv 1 , Zunchang Luo 4 , Hanhua Zhu 1 , Shuai Wang 1 , Qihong Zhu 1 , Daoyou Huang 1 , Baizhong Li 1
Affiliation  

The accumulation of Cd and Pb in rice grains poses a potential threat to human health, which is a subject of increasing concern across the globe. We examined the effect that foliar spraying of Zn-ethylenediaminetetraacetate (Zn-EDTA) (0.3% and 0.5% w/v) during the early-grain filling stage has on rice grain yield and Cd, Pb, Zn and Fe contents in rice tissues via a field experiment. The grain yield significantly decreased with the foliar application of 0.5% Zn-EDTA. In rice grain, foliar spraying of 0.5% Zn-EDTA significantly decreased the Cd and Pb contents, but increased the Zn and Fe contents. The main reasons for the decrease in the Cd and Pb content in grain were the inhibition of Cd and Pb by roots and the increased Fe content in grain via Zn-EDTA application. The foliar spraying of Zn-EDTA decreased the grain yield and Cd and Pb contents, while increased the Zn and Fe contents in grains.



中文翻译:

在灌浆初期叶面施用Zn-EDTA可增加水稻(Oryza sativa L.)的籽粒Zn和Fe,降低籽粒Cd,Pb和籽粒产量。

稻谷中Cd和Pb的积累对人类健康构成潜在威胁,这是全球范围内日益关注的一个问题。我们研究了早粒灌浆期叶面喷洒0.3%和0.5%w / v的Zn-EDTA(Zn-EDTA)对水稻籽粒产量以及水稻组织中Cd,Pb,Zn和Fe含量的影响通过现场实验。叶面施用0.5%Zn-EDTA时,籽粒产量显着下降。在水稻籽粒中,叶面喷洒0.5%Zn-EDTA显着降低了Cd和Pb的含量,但增加了Zn和Fe的含量。降低谷物中Cd和Pb含量的主要原因是根部对Cd和Pb的抑制作用以及通过Zn-EDTA施用增加了谷物中Fe的含量。叶面喷施Zn-EDTA降低了籽粒产量以及Cd和Pb含量,

更新日期:2020-08-01
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