نوع مقاله : مقاله پژوهشی
نویسندگان
1 استاد موسسه تحقیقات گیاهپزشکی کشور
2 عضو هیئت علمی موسسه تحقیقات گیاهپزشکی کشور
3 - دانش ‏آموخته کارشناسی ارشد، گروه زراعت، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران.
4 گروه زراعت، دانشکده کشاورزی دانشگاه تربیت مدرس،تهران-ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study was conducted between 2018 and 2021 in two main parts, including screening experiments aimed at monitoring the resistance status of wild oats (Avena spp.) to commonly used ACCase-inhibiting herbicides, and mapping the distribution of wild oat populations resistant to this group of herbicides in wheat fields across the country. In the whole-plant bioassay experiment, 224 wild oat populations collected from nine provinces were exposed to the recommended application rates (1 and 1.2 L ha-1) of clodinafop-propargyl (Topik® 8% EC) and pinoxaden (Axial® 5% EC). The results showed that among the wild oat populations collected from the studied provinces, Ardabil and Golestan had the highest resistance cases (100%), followed by Fars (97%), Khuzestan (91%), Kermanshah (68%), Tehran and Ilam (64%), and Alborz (33%). In contrast, no clodinafop-propargyl resistance was confirmed in wild oat populations collected from Isfahan province. Overall, 181 (81%) of the 224 tested populations exhibited resistance to clodinafop-propargyl. However, none of the populations in the studied provinces showed resistance to pinoxaden, although the development of resistance was observed in one population from Khuzestan. A distribution map of wild oat populations resistant to clodinafop-propargyl in various provinces was also created. Based on the results of this study, it can be concluded that the continuous and improper use of clodinafop-propargyl herbicide in recent decades has led to the spread of resistance to this herbicide in wild oat populations in wheat fields across various provinces of the country.
کلیدواژهها [English]
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