Differences in sensitivity of F1 and F2 generations of herbicide tolerant sunflower volunteers to selected acetolactate synthase inhibiting herbicides
| Autor: | M. Jursík, K. Hamouzová, J. Soukup, J. Andr, J. Holec |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Plant, Soil and Environment, Vol 60, Iss 10, Pp 446-451 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1214-1178 1805-9368 |
| DOI: | 10.17221/185/2014-PSE |
| Popis: | The aim of this work is to describe the differences in sensitivity of Clearfield, ExpressSun and non-herbicide tolerant (HT) sunflower cultivars to several acetolactate synthase inhibitor herbicides and to find out the differences in sensitivity in F1 and F2 generations of these cultivars. Non-HT sunflower was very sensitive to most of the tested herbicides, except for nicosulfuron (efficacy 43-75%). F2 generation of non-HT sunflower showed a low level of sensitivity to imazamox (efficacy 10-43%) and to nicosulfuron, tribenuron, thifensulfuron and rimsulfuron under dry conditions (efficacy 43-83%). Sensitivity of Clearfield sunflower (cultivar with tolerance to imidazolinone herbicides) to tested sulfonylurea varied according to used herbicide and weather conditions. The highest efficacy on Clearfield sunflower showed iodosulfuron (97-100%) > florasulam (88-100%) > foramsulfuron (40-98%) > thifensulfuron (12-99%) > rimsulfuron (37-99%) > tribenuron (0-87%) > nicosulfuron (0-78%). ExpressSun sunflower (cultivar with tolerance to tribenuron) was the most tolerant to all tested herbicides. The lowest efficacy on F1 generation showed tribenuron (0%) > imazamox (0-17%) > nicosulfuron (0-43%) > thifensulfuron (0-57%) > rimsulfuron (0-70%) > foramsulfuron (8-75%) > florasulam (75-96%) > iodosulfuron (87-98%). Sensitivity of F2 generation of ExpressSun to tested herbicide was usually higher as compared to F1 generation. |
| Databáze: | Directory of Open Access Journals |
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