Gui-qi WANG , Hai-lan CUI , Hong-jun ZHANG , Yan-qiu ZHANG , Xue LIU , Xiang-ju LI , Cui-qin FAN
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引用次数: 7
摘要
荠菜种子采集自中国河北省冬小麦田和路边。用温室全株剂量反应试验评价了它们对甲基三苯醚的敏感性。结果表明，HB-1、HB-2、HB-3、HB-4、HB-6、HB-7、HB-17、HB-18、HB-19、HB-20、HB-21和HB-22种群对甲基三苯脲敏感，GR50值极低，约为0.10 g a.i. ha-1。HB-15和HB-16对甲基三苯醚具有中等抗性，抗性指数在10 ~ 100倍之间;HB-5、HB-8、HB-9、HB-10、HB-11、HB-12、HB-13和HB-14对甲基三苯醚具有高抗性，抗性指数在100倍以上。中等耐药比例约为9.09%，高耐药比例约为36.36%。
Tribenuron-Methyl Resistant Shepherd's Purse (Capsella bursa-pastoris (L.) Medik.) in Hebei Province of China
Shepherd's purse seeds were collected from winter wheat fields and road sides in Hebei Province, China. Their sensitivities to tribenuron-methyl were evaluated in a whole plant dose response assay in the greenhouse. Results revealed that HB-1, HB-2, HB-3, HB-4, HB-6, HB-7, HB-17, HB-18, HB-19, HB-20, HB-21, and HB-22 populations were susceptible to tribenuronmethyl characterised by very low GR50 values of about 0.10 g a.i. ha-1. On the other hand, populations HB-15 and HB-16 had moderate resistance to tribenuron-methyl with resistance indices (RI) ranging from 10-100 folds, whilst populations HB-5, HB-8, HB-9, HB-10, HB-11, HB-12, HB-13, and HB-14 expressed high level of resistance to tribenuron-methyl with resistance indices over 100. The proportion of moderate resistance level was about 9.09%, and that of high resistance was about 36.36%.
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