Alpha-amylase activity and falling number during grain development in primary triticales and their parents
1991
Oettler, G. (University of Hohenheim (Germany). Landessaatzuchtanstalt)
Primary triticales supply the basic material for breeding programs. It is of interest to know, therefore, if the a-amylase activity pattern of the parents is reflected in the intergeneric hybrid. Two primary hexaploid triticales, their wheat and rye parents, and one triticale cultivar were grown at Hohenheim in 1989 and assessed for a-amylase activity and falling number during grain development. Ripening occurred in a warm and dry environment without visible signs of sprouting. Wheat and rye parents and the triticale cultivar exhibited, in general, the expected pattern of decreasing amylase activity from 30 days after anthesis until harvest ripeness. The primary triticales showed widely contrasting patterns of changes of a-amylase activity, with excessive levels at maturity in one genotype. The reason for this high pre-maturity a-amylase activity is not clear. The enzyme pattern of the wheat and rye parents was only in part reflected in the amphidiploid. a-amylase and falling number during grain development were closely correlated, indicating the suitability of both methods to screen breeding materials at various stages of development
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