AC McDuff flax.
AC McDuff, a late-maturing oilseed flax (Linum usitatissimum) with very high oil content, was released by Agriculture Canada, Research Station, Morden, Manitoba, in 1993. It was selected from a cross made in 1981 between the experimental lines FP766 and FP775, where FP766 was selected from the cross Redwood 65/Linott//Dufferin and FP775 was selected for high oil content from the cross McGregor//Redwood 65/a high oil line of unknown origin. AC McDuff has good lodging resistance and is high yielding in the Black Soil zone of the prairies where it was equal to or higher yielding than all cultivars except AC Linora. It is immune to North American races of rust caused by Melampsora lini and is moderately resistant to wilt caused by Fusarium oxysporum f.sp. lini.