利巴韦林对4种作物种子发芽的影响

利巴韦林作为一种强效抗病毒药物在畜禽养殖业中应用广泛,有着较高的生态环境风险。采用室内培养箱培养的方法,研究了利巴韦林对4种作物(小麦、白菜、萝卜和番茄)的种子发芽、根伸长和芽伸长的影响。结果表明,利巴韦林对4种作物的种子发芽率影响不大,但其浓度与4种作物的根伸长及芽伸长抑制率显著相关(P<0.01或P<0.05),作物的根伸长比芽伸长对利巴韦林的胁迫更敏感。土壤中利巴韦林浓度与4种作物根伸长抑制率之间呈现正相关关系。根伸长的抑制率达到10%所对应的利巴韦林浓度(IC10)分别为:IC10(白菜)=4.25mg·kg-1,IC10(番茄)=29.7mg·kg-1,IC10(萝卜)=33.2mg·kg-1,IC10(小麦)=49.4mg·kg-1。可以看出,4种作物对土壤中利巴韦林胁迫的敏感性依次是:白菜>番茄>萝卜>小麦。从利巴韦林对4种作物的根伸长和芽伸长抑制率综合来看,小麦对利巴韦林的耐受性最强,而白菜对利巴韦林最敏感。

Effects of Ribavirin on Seed Germination of Four Crops

Ribavirin as a highly effective antiviral drug was intensively used in livestock-raising,which was high risk to eco-environment.The effects of ribavirin on seed germination and shoot/root elongation of wheat(Triticum aestivum L.),tomato(Solanum lycopersicum),Chinese cabbage(Brassica pekinensis) and carrot(Raphanus sativus L.) in yellow fluvo-aquic soil were investigated using indoor cultivation method.Results indicated that seed germination of the four crops was not sensitive to ribavirin exposure,while the inhibitory rates of root and shoot elongation were correlated to ribavirin concentration(P<0.01 or P<0.05).Compared with shoot elongation,the root elongation was more sensitive to ribavirin stress.A positive correlation was observed between ribavirin concentration and inhibitory rates of root elongation of four crops.IC10(10%inhibitory concentration of ribavirin) values of root elongation of Chinese cabbage,tomato,carrot and wheat were 4.25,29.7,33.2 and 49.4 mg kg-1,respectively.According to the above results,the sensitivities of four crops to ribavirin were in the sequence:Chinese cabbage>tomato>carrot>wheat.According to the above results,Chinese cabbage was the most sensitive and wheat was the most tolerant crop to ribavirin.