To examine variation in phytosiderophore biosynthesis in Triticeae, phytosi
derophores were investigated in wild and cultivated species of wheat and ba
rley with different genomes. All wheats tested including hexaploid (AABBDD)
, tetraploid (AABB), and diploid (AA or Un) lines produced only one phytosi
derophore, 2'-deoxymugineic acid. The phytosiderophores biosynthesized in w
ild barleys varied among species. Using substitution-type triticale lines a
nd wheat-barley addition lines, it was revealed that, in triticale, genes f
or the biosynthesis of both mugineic and hydroxymugineic acids were located
in the long arm of chromosome 5R and that, in barley, the gene for product
ion of mugineic acid was located in the long arm of chromosome 4H.