Evolution of herbicide resistance in weeds: initial frequency of target site-based resistance to acetolactate synthase-inhibiting herbicides in Lolium rigidum
作者： C Preston , S B Powles
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摘要: The frequency of individuals resistant to two acetolactate synthase (ALS)-inhibiting herbicides in three previously untreated populations Lolium rigidum was determined. the sulfonylurea herbicide sulfometuron-methyl varied from 2.2 × 10−5 1.2 10−4 and imidazolinone imazapyr 1 5.8 depending on population. Application selected with a herbicide-insensitive ALS, which also cross-resistant imazapyr. high initial ALS-inhibiting L. rigidumpopulations never exposed these helps explain rapid evolution resistance this species once were used.
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