The mechanism of resistance to ALS-inhibiting herbicides in biotypes of wind bent grass (Apera spica-venti L.) with cross and multiple resistance
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Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
The aim of the greenhouse experiments was to study
the mechanism of cross- and multiple resistance of A. spica-venti
to inhibitors of acetolactate synthesis (ALS). To determine the
type of resistance to sulfonylurea herbicides, green mass of over
ground parts of A. spica-venti plants was collected and examined.
Of 3 tested weed biotypes characterized by cross resistance to
sulfonylurea herbicides, 2 biotypes (R2 and R3) showed ALS
gene point mutation at position Pro-197 conferring ALS targetsite-
resistance. Within the group of 3 biotypes showing multiple
resistance to ALS and acetylCoA carboxylase (ACCase) inhibitors
the biotypes R4 and R6 with specific gene point mutation at
position Pro-197 were also detected. The sulfometuron showed
to be a useful tool to study weed resistance to sulfonylurea herbicides.
Keywords
Apera spica-venti, herbicides, chlorsulfuron, fenoxaprop-P-ethyl, sulfometuron, mechanism of resistance
Citation
Polish Journal of Agronomy
2012, 10, 3–8