The <i>Brassica rapa</i> canola hybrid, HCR-1, was derived from an inter-specific cross with the <i>B. napus</i> transformation event T45, that expresses a novel tolerance to glufosinate ammonium. This tolerance will allow the use of glufosinate ammonium as a post-emergence herbicide, thus providing an alternative for weed control in canola production, and reducing reliance on soil-incorporated herbicides. B. napus, transformed with the gene conferring glufosinate ammonium tolerance has been approved in May 1996.