EFFECTS OF CHROMOSOME 7D OF Triticum aestivum ’CANTHATCH’ AND OF FOUR VARIETIES OF Triticum tauschii ON MILLING AND BAKING QUALITY

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Abstract
Chromosome 7D of Triticum aestivum ’Canthatch’ was examined for its effects on milling and baking quality by investigating three aneuploid lines of this cultivar—one ditelosomic for 7DS, one ditelosomic for 7DL and one nullisomic for 7D. Also, the effects on milling and baking quality of chromosome 7D and of the complete D genome from the Triticum tauschii (Coss.) Schmal. (2n = 14 = DD) varieties RL5003, typica, anathera and strangulata were examined using disomic substitutions and synthetic hexaploids (2n = 42 = AABBDD). The long arm of Canthatch chromosome 7D had positive effects on seed size, test weight and flour quality. With respect to milling and baking quality, chromosome 7D of Triticum tauschii fully compensated for 7D Canthatch.Key words: Triticum aestivum, Triticum tauschii, baking quality, aneuploid, chromosome substitution