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ARS Home » Plains Area » Fargo, North Dakota » Edward T. Schafer Agricultural Research Center » Sunflower and Plant Biology Research » Research » Publications at this Location » Publication #89616
Title: PROGRESS IN DEVELOPING PURSUIT/RAPTOR HERBICIDE RESISTANT SUNFLOWER

Author
item AL-KHATIB, K - KANSAS STATE UNIVERSITY
item Miller, Jerry

Submitted to: Proceedings Sunflower Research Workshop
Publication Type: Proceedings
Publication Acceptance Date: 1/30/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary: Producers of hybrid sunflower have very few herbicides available to utilize in controlling broadleaf weeds. This lack of herbicides will become even more critical if producers convert sunflower production to solid-seeding where conventional cultivation is not an option. Therefore, the discovery of a wild sunflower population resistant to the imidazolinone class of herbicides has caused tremendous excitement among the sunflower industry. The objective of this investigation was to initiate transfer of the herbicide resistant gene(s) from the wild population to USDA cultivated sunflower inbred lines. Plants in the BC1F1 generation were treated with a 5X rate of Pursuit (imazethapyr) and Raptor (imazamox) and resistant plants backcrossed to recurrent parents. Utilizing an embryo culture technique, BC2F2 and BC2F3 seed should be available for release to the sunflower industry by summer of 1998.

Technical Abstract: Producers of hybrid sunflower (Helianthus annuus L.) have very few herbicides available to utilize in controlling broadleaf weeds. This lack of herbicides will become even more critical if producers convert sunflower production to solid-seeding where conventional cultivation is not an option. Therefore, the discovery of a wild sunflower population (found to be wild Helianthus annuus L.) resistant to the imidazolinone class of herbicides has caused tremendous excitement among the sunflower industry. The objective of this investigation was to initiate transfer of the herbicide resistant gene(s) from the wild population to USDA cultivated sunflower inbred lines. Plants in the BC1F1 generation were treated with a 5X rate of Pursuit (imazethapyr) and Raptor (imazamox) and resistant plants backcrossed to recurrent parents. Utilizing an embryo culture technique, BC2F2 and BC2F3 seed should be available for release to the sunflower industry by summer of 1998.