Linkage mapping of mutant loci in rye (Secale cereale L.)

Eight mutant loci determining the traits waxy plant (w and wa1), brown culm (cb), multiple pistils (mp), weak plant with reduced plant height (np), mo noculm growth habit (mc). compactum growth habit (ct3) and anthocyaninless (an) were mapped on rye chromosomes 4R (w, np), 6R (cb, inc) and 7R (mp, wa l, ct3, an). For five mutants (w, wa1, cb, mp, np) molecular and biochemica l markers were applied, whereas for inc. ct3 and an a classical linkage ana lysis was performed. Furthermore, it could be demonstrated that homoeologou s relationships exist between most of the mapped rye loci and comparable mu tants in wheat and barley. It was confirmed not only that genes controlling fundamental aspects of plant biology are highly conserved across the Triti ceae species but so also were many mutant loci.