安徽省棉田马唐对草甘膦的抗药性研究

为明确安徽省不同生态区棉田马唐对草甘膦的抗药性水平,采用培养皿种子检测法、整株植株测定法和症状级别法测定池州市、安庆市、芜湖市、滁州市、蚌埠市、阜阳市等地共9个点马唐对草甘膦的抗药性水平。3种检测方法结果均表明:安徽安庆市大观区海口镇皖河农场马唐相对抗药性倍数最高,抗药性指数分别为3.23、3.52和4.91;培养皿种子检测法和整株植物测定法检测的结果基本一致,而使用症状级别法检测的马唐的相对抗药性倍数略高于其他2种方法。

Resistance of Digitaria sanguinalis to Glyphosate in Cotton Fields of Anhui Province

The objective is to clarify the resistance level of Digitaria sanguinalis collected from cotton fields to glyphosate in Anhui Province. The dish seed detection, the whole plant assays and the visual observation method were used to study the resistance levels of Digitaria sanguinalis to glyphosate in 9 areas like Chizhou City, Anqing City, Wuhu City, Chuzhou City, Bengbu City, Fuyang City and etc. in Anhui Province. The three detection methods showed that Digitaria sanguinalis populations from the collecting site of Haikou Town, Anqing City, had the highest resistance, with a resistance index of 3.23, 3.52 and 4.91, respectively. The dish seed detection and whole plant assays had the same resistance tendencies. However, the resistance levels obtained by using the visual observation method were slightly higher than the other two methods.