First Resistance Mechanisms Characterization in Glyphosate-Resistant Leptochloa virgata.

ABSTRACT: Leptochloa virgata (L.) P. Beauv. is an annual weed common in citrus groves in the states of Puebla and Veracruz, Mexico limiting their production. Since 2010, several L. virgata populations were identified as being resistant to glyphosate, but studies of their resistance mechanisms developed by this species have been conducted. In this work, three glyphosate-resistant populations (R8, R14, and R15) collected in citrus orchards from Mexico, were used to study their resistance mechanisms comparing them to one susceptible population (S). Dose-response and shikimic acid accumulation assays confirmed the glyphosate resistance of the three resistant populations. Higher doses of up to 720 g ae ha^-1 (field dose) were needed to control by 50% plants of resistant population

SUBMITTER: Alcantara-de la Cruz R 

PROVIDER: S-EPMC5114308 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature