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ARS Home » Plains Area » Lincoln, Nebraska » Wheat, Sorghum and Forage Research » Research » Publications at this Location » Publication #182408


item Graybosch, Robert
item NELSON, L
item KRALL, J
item Jin, Yue
item LYON, D
item MARTIN, A
item Chen, Ming-Shun
item Bai, Guihua

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/30/2005
Publication Date: 2/26/2006
Citation: Baenziger, P.S., Beecher, B., Graybosch, R.A., Baltsenperger, D.D., Nelson, L.A., Krall, J.M., Jin, Y., Watkins, J.E., Lyon, D.J., Martin, A.R., Chen, M., Bai, G. 2006. Registration of 'Infinity CL' wheat. Crop Science. 46: 975-979.

Interpretive Summary: Wheat producers in the western Great Plains often are plagued with infestations of grassy weeds, especially jointed goatgrass, feral rye and downy brome (cheatgrass). These three weed species are difficult to control. Until recently, selective herbicides capable of clearing wheat fields from these two weedy pests have not been available. Industry scientists developed a gene conferring resistance to the imidazolinone family of herbicides. This gene was identified as a mutation of an existing wheat gene, and its development did not involve recombinant DNA technologies. The cultivar Infinity CL represents the first Nebraska-adapted hard red winter wheat having this herbicide resistant gene. Fields of Infinity CL may be treated with Beyond® herbicide, and cleared of jointed goatgrass, downy brome and feral rye. Culture of Infinity CL will result in cleaner fields, less weed seed contamination of wheat grain samples, diminished dockage, and increased income for farmers in an economically depressed portion of the United States. It also will result in cleaner samples entering the export market, thereby improving the reputation of the U.S. as a supplier of high quality grain shipments.

Technical Abstract: ‘Infinity CL’ (Reg. No. Cv- ) is a hard red winter wheat (Triticum aestivum L.) cultivar developed cooperatively by the Nebraska Agricultural Experiment Station and the USDA-ARS, and released in 2005 by the developing institutions. Infinity CL contains a patented gene owned by BASF Corporation. Infinity CL was released primarily for its superior adaptation to rainfed wheat production systems in Nebraska and in counties in adjacent states. The name Infinity CL was chosen because it is a Clearfield™ wheat that will be used with Beyond® herbicide (active ingredient imazamox, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-(methoxymethyl)-3-pyridinecarboxylic acid). Beyond® will be used to control three weeds of importance to wheat producers in the western Great Plains: jointed goat-grass (Aegilops cylindrica), feral rye (Secale cereale) and downy brome (Bromis tectorum). Infinity CL was selected from the cross ‘Windstar’//’Millennium’ sib/’Above’ sib, and it has performed extremely well throughout most of Nebraska and Wyoming in rainfed production systems. Infinity CL is genetically complementary to Millennium, Wahoo, Above, and Windstar. Infinity CL has been uniform and stable since 2003. Beginning in 2001, all seed increases were sprayed with Beyond® herbicide to insure Infinity CL was homogenous for herbicide tolerance. Less than 0.5 % of the plants were rogued from the Breeder's seed increase in 2004.