Phytotoxicity of thiocyanate to rice seedlings.

Department of Environmental Sciences and Engineering, Hunan Agricultural University, Changsha, 41028, People's Republic of China. yuxiaozhang@hotmail.com

Bulletin of environmental contamination and toxicology 2012 May

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The acute toxicity of potassium thiocyanate (KSCN) and ammonium thiocyanate (NH(4)SCN) to rice seedlings was tested. Hydroponically-grown plants showed different responses to the two species of thiocyanate. NH(4)SCN caused more severe stress to rice seedlings than KSCN. A significant reduction in transpiration and relative growth was observed with all NH(4)SCN treatments (p < 0.01), while the effect of KSCN on rice seedlings was more evident at greater than 100 mg SCN/L (p < 0.01). Both chemicals had a negligible effect on total chlorophyll content in shoots of rice seedlings (p > 0.05). Although phyto-transport of thiocyanate was apparent, rice seedlings showed significantly higher removal potential for NH(4)SCN than KSCN.

Citation

Xiao-Zhang Yu, Fu-Zhong Zhang, Fan Li. Phytotoxicity of thiocyanate to rice seedlings. Bulletin of environmental contamination and toxicology. 2012 May;88(5):703-6