Abstract: Disclosed are methods for treating rice, including: providing a rice crop plant and at least one AHAS-inhibiting herbicide; applying an effective amount of the AHAS-inhibiting herbicide to the rice crop plant, post-emergence, to form a treated rice crop plant; and growing the treated rice crop plant. The applied AHAS-inhibiting herbicide may include 2-(4-isopropyl-4-methyl-5-oxo-2-imidiazolin-2-yl)-nicotinic acid, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-3-quinolinecarboxylic acid, 5-ethyl-2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-nicotinic acid, 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-(methoxymethyl)-nicotinic acid, or 2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)-5-methylnicotinic acid, a derivative thereof, or a mixture thereof.

Abstract: The present disclosure provides a method for treating rice. The method comprises the steps of: providing a domestic rice crop plant and at least one AHAS-inhibiting herbicide selected from the group comprising a sulfonylurea herbicide, a sulfonyl carboxamide herbicide, an imidazolinone herbicide, a triazolopyrimidine herbicide, a pyrimidinyloxybenzoate herbicide, and a sulfonylaminocarbonyltriazolinone herbicide; applying an effective amount (measured in g Al/Ha) of one or more of the aforementioned herbicide to the domestic rice crop plant, post-emergence; thereby creating a treated rice plant; and growing the resulting treated rice plant.

Abstract: Herbicide-resistant rice plants, isolated polynucleotides that encode herbicide resistant and wild-type acetohydroxy-acid synthase large subunit 1 (AHASL1) polypeptides, and the amino acid sequences of these polypeptides, are described. Expression cassettes and transformation vectors comprising the polynucleotides of the invention, as well as plants and host cells transformed with the polynucleotides, are described. Methods of using the polynucleotides to enhance the resistance of plants to imidazolinone herbicides, and methods for controlling weeds in the vicinity of herbicide-resistant plants are also described.

Abstract: Herbicide-resistant rice plants, isolated polynucleotides that encode herbicide resistant and wild-type acetohydroxyacid synthase large subunit 1 (AHASL1) polypeptides, and the amino acid sequences of these polypeptides, are described. Expression cassettes and transformation vectors comprising the polynucleotides of the invention, as well as plants and host cells transformed with the polynucleotides, are described. Methods of using the polynucleotides to enhance the resistance of plants to imidazolinone herbicides, and methods for controlling weeds in the vicinity of herbicide-resistant plants are also described.

Abstract: Herbicide-resistant rice plants, isolated polynucleotides that encode herbicide resistant and wild-type acetohydroxy-acid synthase large subunit 1 (AHASL1) polypeptides, and the amino acid sequences of these polypeptides, are described. Expression cassettes and transformation vectors comprising the polynucleotides of the invention, as well as plants and host cells transformed with the polynucleotides, are described. Methods of using the polynucleotides to enhance the resistance of plants to imidazolinone herbicides, and methods for controlling weeds in the vicinity of herbicide-resistant plants are also described.

Abstract: The present invention is directed to plants having increased tolerance to an imidazolinone herbicide. More particularly, the present invention includes rice plants containing at least one variant AHAS nucleic acid such as an imidazolinone tolerant IMINTA 1, 4 or 5 lines comprising an alanine to threonine substitution as compared to the wild-type AHAS. The present invention also includes seeds produced by these rice plants and methods of controlling weeds in the vicinity of these rice plants.