Author： Swanston J.S. Ellis R.P. Stark J.R.
Publisher： Academic Press
ISSN： 0733-5210
Source： Journal of Cereal Science, Vol.22, Iss.3, 1995-11, pp. : 265-273
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Abstract
In this study inbred barley lines carrying waxy and/or high amylose genes were obtained from a cross between Waxy Hector and a breeders` line BE285 (high amylose GlacierxMidas) and assessed for malting quality. Inbred lines were assayed and classified as having none, one or both genes. After malting, waxy lines had a slightly lower hot water extract than normal starch lines. Large effects were demonstrated for both grain nitrogen content and hot water extract in high amylose lines and, particularly, in lines with both genes. Endosperm modification during malting was reduced by both starch mutations. Electron microscopy showed that the phenotype with both genes was characterised by a highly compacted endosperm. During malting, this structure was extremely resistant to modification.
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