Since our laboratory identified a low phytic acid wheat (lpa) genotype, Js-12-LPA, we have evaluated the lpa phenotype in commercial wheat cultivars. Wild-type and low phytic acid families derived from three spring wheat populations were grown in replicated trials at Aberdeen, ID in 2003 and 2004. Three spring populations, Grandin*4/Js-12-LPA sibs (hard red), Lolo*3/Js-12-LPA sibs (hard white), and F4-derived sibs from IDO563/Js-12-LPA (soft white) were evaluated for agronomic characteristics and end use quality. Within the Grandin population, yield of lpa families averaged 19% lower than wild-type families; the highest yielding lpa family yielded 10% less than the average of the wild-type families. Lpa Grandin families were delayed in development: on Jun 10, average Zadoks stage of lpa families was 40, compared to 42 for wild-type families, and lpa families averaged 5 cm shorter, although at maturity lpa families averaged 2 cm taller than wild-type families. Heading of lpa families was delayed 3 days relative to wild-type families. In contrast, within the Lolo population, yield, height, and heading date of lpa and wild-type families were not significantly different. In both the Grandin and Lolo populations, grain of lpa families produced 11-13 g less flour than per kg grain. and flour ash concentration was greater in lpa families than in wild-type families (16% greater in the Grandin population, 23% greater in the Lolo population). However, greater ash concentration in lpa Lolo families was not reflected in either the initial or 24-hour alkaline noodle brightness, which was slightly greater in lpa families. In the Grandin population, loaf volume per unit flour protein was not affected by the lpa phenotype. In both the Grandin and Lolo populations, lpa phenotype did not affect mixograph peak time, height, or tolerance. Therefore, the lpa phenotype is not associated with obvious detrimental functional effects on end-use quality performance.