Abstract: Plants, plant parts and plant seeds that are resistant to imidazolinone herbicides are provided. Plants are disclosed that contain a mutation in an AHAS gene. Specifically, plants are disclosed that contain a mutant AHAS gene allele of the Brassica juncea B genome. Two B. juncea AHAS gene sequences (BjAHAS-a and BjAHAS-b) and one B. nigra AHAS gene sequence (BngrAHAS) are disclosed. The sequence of the mutant allele, BjAHAS-bR, is also disclosed. Various methods are disclosed that include creation of mutant B. juncea lines, selection for herbicide resistant lines and determining the presence of the BjAHAS-bR mutant allele after crosses.

Abstract: Plants, plant parts and plant seeds that are resistant to imidazolinone herbicides are provided. Plants are disclosed that contain a mutation in an AHAS gene. Specifically, plants are disclosed that contain a mutant AHAS gene allele of the Brassica juncea B genome. Two B. juncea AHAS gene sequences (BjAHAS-a and BjAHAS-b) and one B. nigra AHAS gene sequence (BngrAHAS) are disclosed. The sequence of the mutant allele, BjAHAS-bR, is also disclosed. Various methods are disclosed that include creation of mutant B. juncea lines, selection for herbicide resistant lines and determining the presence of the BjAHAS-bR mutant allele after crosses.

Abstract: Plants, plant parts and plant seeds that are resistant to imidazolinone herbicides are provided. Plants are disclosed that contain a mutation in an AHAS gene. Specifically, plants are disclosed that contain a mutant AHAS gene allele of the Brassica juncea B genome. Two B. juncea AHAS gene sequences (BjAHAS-a and BjAHAS-b) and one B. nigra AHAS gene sequence (BngrAHAS) are disclosed. The sequence of the mutant allele, BjAHAS-bR, is also disclosed. Various methods are disclosed that include creation of mutant B. juncea lines, selection for herbicide resistant lines and determining the presence of the BjAHAS-bR mutant allele after crosses.

Abstract: In one aspect, the invention provides novel tetraploid Brassica plants having no more than two expressible FAD2 coding sequences, capable of producing canola quality oils. Other aspects of the invention provide new variants of the FAD2 enzyme, comprising BjFAD2-b and BjFAD2-a, as well as nucleic acid sequences encoding such peptides. Other aspects of the invention include nucleic acid sequences upstream from the BjFAD2-b or BjFAD2-a ORFs. Other aspects of the invention include transgenic plants and plant pads. Vectors capable of transforming plant cells are provided, comprising the nucleic acids of the invention, including FAD2 coding sequences. Corresponding methods are provided for obtaining the transgenic plants of the invention. Methods are provided for using the plants of the invention, including selected plants and transgenic plants, to obtain plant products.

Abstract: Plants, plant parts and plant seeds that are resistant to imidazolinone herbicides are provided. Plants are disclosed that contain a mutation in an AHAS gene. Specifically, plants are disclosed that contain a mutant AHAS gene allele of the Brassica juncea B genome. Two B. juncea AHAS gene sequences (BjAHAS-a and BjAHAS-b) and one B. nigra AHAS gene sequence (BngrAHAS) are disclosed. The sequence of the mutant allele, BjAHAS-bR, is also disclosed. Various methods are disclosed that include creation of mutant B. juncea lines, selection for herbicide resistant lines and determining the presence of the BjAHAS-bR mutant allele after crosses.

Abstract: In various aspects, the invention provides Brassica juncea plants, seeds, cells, nucleic acid sequences and oils. Edible oil derived from plants of the invention may have significantly higher oleic acid content than other B. juncea plants. In one embodiment, the B. juncea line MJ02-086-3 contains a mutant allele MJ02-086-3/BjFAD2-a at the BjFAD2-a gene locus, having a premature stop codon, so that there are no functional copies of the FAD2 gene in MJ02-086-3 plants. Seeds from MJ02-086-3 plants may for example yield an oil having oleic acid content of greater than about 70% by weight.

Abstract: Plants, plant parts and plant seeds that are resistant to imidazolinone herbicides are provided. Plants are disclosed that contain a mutation in an AHAS gene. Specifically, plants are disclosed that contain a mutant AHAS gene allele of the Brassica juncea B genome. Two B. juncea AHAS gene sequences (BjAHAS-a and BjAHAS-b) and one B. nigra AHAS gene sequence (BngrAHAS) are disclosed. The sequence of the mutant allele, BjAHAS-bR, is also disclosed. Various methods are disclosed that include creation of mutant B. juncea lines, selection for herbicide resistant lines and determining the presence of the BjAHAS-bR mutant allele after crosses.

Abstract: In one aspect, of the invention provides novel tetraploid Brassica plants having no more than two expressible FAD2 coding sequences, capable of producing canola quality oils. Other aspects of the invention provides new variants of the FAD2 enzyme, comprising BjFAD2-b and BjFAD2-a, as well as nucleic acid sequences encoding such peptides. Other aspects of the invention includes nucleic acid sequences upstream from the BjFAD2-b or BjFAD2-a ORFs. Other aspects of the invention include transgenic plants and plant parts. Vectors capable of transforming plant cells are provided, comprising the nucleic acids of the invention, including FAD2 coding sequences. Corresponding methods are provided for obtaining the transgenic plants of the invention. Methods are provided for using the plants of the invention, including selected plants and transgenic plants, to obtain plant products.