QUALITY CHARACTERISTICS OF DURUM-WHEAT LINES DERIVING HIGH-PROTEIN FROM A TRITICUM-DICOCCOIDES (6B) SUBSTITUTION

One of the objectives in the Canadian durum wheat (Triticum turgidum L .) breeding programs has been the selection of lines having higher pro tein content. The Langdon-dicoccoides (Triticum dicoccoides 6B) substi tution, a source of high protein, has been introgressed into two high yielding, but lower protein Canadian lines of durum wheat. The resulti ng lines with protein content similar to registered cultivars were eva luated for protein quality. The introgression had no detrimental effec ts upon pasta cooking quality, and thus the dicoccoides 6B chromosome substitution will be a valuable route to increasing protein level for the durum wheat breeding program.