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Genetic studies on the β-amylase isozymes of barley malt

✍ Scribed by M. J. Allison

Publisher
Springer Netherlands
Year
1973
Tongue
English
Weight
690 KB
Volume
44
Category
Article
ISSN
0016-6707

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✦ Synopsis

From genetic studies on two ~-amylase forms (Sdl and Sd2) observed in barley malts it is concluded that the Sd I and Sd2 phenotypes are controlled by a pair of alleles acting without dominance. Gene dosage effects typical of characters determined by the endosperm were observed in F1 hybrids. Preliminary studies on the distribution of Sd I and Sd2 forms indicate that Sdl is the rarer one; of thirty-one cultivars tested, twenty were Sd2, nine were typed as Sdl and two cultivars had both Sdl and Sd2 phenotypes. An analysis of joint segregations for Sdl, Sd2, the heat-stable ~-amylases and two esterase forms gave no evidence for linkage between these three loci.

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