BRASSICA PLANT COMPRISING MUTANT FATTY ACYL-ACP THIOESTERASE ALLELES

Seed oil having less than 7 wt % saturated fatty acids， wherein said seed oil is obtainable from seeds of a Brassica plant comprising at least three FATB genes， characterised in that it comprises at least three mutant FATB alleles in its genome. The invention relates to crop plants comprising novel seed lipid compositions. Provided are both wild type and mutant nucleic acid molecules encoding Brassica fatty acyl-acyl carrier protein (ACP) thioesterase B proteins (FATB) and the proteins as such. Also provided are Brassica plants， tissue and seeds comprising at least three mutant fatB alleles in their genome， whereby the seed oil fatty acid composition or profile is significantly altered.