LINKAGE MAPPING OF PROLAMIN AND ISOZYME GENES ON THE 1S(L) CHROMOSOMEOF AEGILOPS LONGISSIMA

The storage proteins and isozymes of two accessions of Aegilops longis sima, and the F-2 progeny from the cross between them, were analyzed. Six loci were identified on the 1S(1) chromosome: Glu-S(l)1 (coding fo r HMW subunits of glutenin), Gpi-S(l)1 (coding for a Gpi isozyme), Glu -S(l)3 (coding for LMW subunits of glutenin), Gli-S(l)1 (coding for gl iadins) and two, so far, not described new loci Gli-S(l)4 and Gli S(l) 5. The Gli-S(l)4 locus codes for a omega-gliadin and the Gli-S(l)5 cod es for a gliadin with mobility in the beta-region. The genetical dista nces found between the six loci allowed the establishment of the follo wing gene order on the 1S(l) chromosome: Glu-S(l)1 - centromere - Gpi- S(l)1 - Gli-S'4 - Glu-S(l)3 - GIi-S(l)1 - Gli-S(l)5.