The invention provides transgenic or non-transgenic plants with improved levels of tolerance to AHAS-inhibiting herbicides. The invention also provides nucleic acids encoding mutants of the acetohydroxyacid synthase (AHAS) large subunit, expression vectors, plants comprising the polynucleotides encoding the AHASL subunits containing single, double or more mutations, plants comprising one, two or more AHASL subunit single mutant polypeptides, methods for making and using the same, and methods of controlling weeds.

The present invention discloses a CLALS protein, its coding gene and use in predicting the herbicide resistance of a watermelon. The herbicide resistance of a watermelon to be tested in which the amino acid residue at position 190 from N-terminus of the CLALS protein is only a non-proline residue or a watermelon to be tested in which the amino acid residue at position 190 from N-terminus of the CLALS protein is a non-proline residue and a proline residue is stronger than that of a watermelon to be tested in which the amino acid residue at position 190 from N-terminus of the CLALS protein is only a proline residue. Experiments have shown that the type of the amino acid residue at position 190 from the N-terminus of CLALS protein can be used as a detection target to predict the herbicide resistance of a watermelon to be tested. The invention has great application value.

The present invention is directed to lentil plants having increased resistance to an imidaizolinone herbicide. One such plant described herein is the RH44 lentil variety. The present invention also includes seeds produced by these lentil plants and methods of controlling weeds in the vicinity of these lentil plants.

The herbicide-tolerant rice cultivar designated CL272 and its hybrids and derivatives are disclosed. CL272 is a novel, herbicide-resistant, early maturing, semidwarf, medium-grain rice cultivar with improved yield and improved disease resistance. This invention also pertains to methods for producing a hybrid or new variety by crossing the rice variety CL272 with another rice line, one or more times. This invention allows for single-gene converted plants of CL272. This invention also provides regenerable cells for use in tissue culture of rice plant CL272. The present invention provides a method for treating rice.

Provided are mutated acetohydroxyacid synthase (AHAS) nucleic acids and the proteins encoded by the mutated nucleic acids. Also provided are cassava plants, cells, and seeds comprising the mutated genes.

The present invention provides for compositions and methods for producing sorghum crop plants that are resistant to herbicides. In particular, the present invention provides for sorghum plants, plant tissues and plant seeds that contain altered acetolactate synthase (ALS) genes and proteins that are resistant to inhibition by herbicides that normally inhibit the activity of the ALS protein.

The present invention provides for compositions and methods for producing sorghum crop plants that are resistant to herbicides. In particular, the present invention provides for sorghum plants, plant tissues and plant seeds that contain altered acetolactate synthase (ALS) genes and proteins that are resistant to inhibition by herbicides that normally inhibit the activity of the ALS protein.

Present invention relates to the use of the ALS inhibitor herbicides for controlling unwanted vegetation in ALS inhibitor herbicide tolerant Beta vulgaris plants, more especially, present invention relates to the use of ALS inhibitor herbicides for control of unwanted vegetation in Beta vulgaris, preferably in sugar beet growing areas in which the Beta vulgaris, preferably sugar beet comprise a mutation in codon 1705-1707 of an endogenous ALS gene encoding an ALS protein containing an amino acid that is different from tryptophan at position 569, preferably the tryptophan is substituted by leucine.

Disclosed herein are methods and compositions for parallel or sequential transgene stacking in plants to produce plants with selected phenotypes.

The present invention is directed to wheat plants and triticale plants having increased tolerance to an imidazolinone herbicide. More particularly, the present invention includes wheat plants or triticale plants containing one or more Triticum turgidum IMI nucleic acids. The present invention also includes seeds produced by these wheat plants and triticale plants, and methods of controlling weeds in the vicinity of these wheat plants and triticale plants.