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United States Department of Agriculture

Agricultural Research Service

Title: Functional Properties of Waxy Wheat Flours; Genotypic and Environmental Effects

Authors
item Graybosch, Robert
item Souza, - UNI OF IDAHO
item Berzonsky, W - NORTH DAKOTA STATE
item Baenziger, P - UNI OF NE
item Chung, Okkyung

Submitted to: Cereal Foods World
Publication Type: Abstract Only
Publication Acceptance Date: May 12, 2002
Publication Date: October 13, 2002
Citation: Graybosch, R.A., Souza, Berzonsky, W., Baenziger, P.S., Chung, O.K. 2002. Functional properties of waxy wheat flours; genotypic and environmental effects. Cereal Foods World.

Interpretive Summary: A set of waxy (amylose-free) experimental spring wheats (Triticum aestivum L.) of diverse parentage were grown, along with four non-waxy check cultivars, at various North American cultural environments. Grain yield and functional attributes of derived flours were determined. Average grain yield of the waxy lines did not differ significantly from the average yield of the check cultivars, but significant differences were observed amongst the waxy lines. Grain hardness varied significantly amongst the waxy lines, and both hard and soft textured waxy lines were identified. Analysis of flour quality traits showed few differences between waxy lines and check cultivars for traits primarily related to protein concentration or protein quality, but many significant differences between properties primarily dependent upon starch structure, or related to milling behavior. Protein-related quality attributes of waxy wheats demonstrated environmental and genotypic variances similar to those typical of non-waxy wheats. Starch-related quality attributes of waxy wheats showed remarkable stability across environments, but some significant genetic variation was observed. End-users interested in employing waxy wheats should be able to select desired waxy lines, and feel confident that the starch-related functional properties will be environmentally consistent.

Technical Abstract: A set of waxy (amylose-free) experimental spring wheats (Triticum aestivum L.) of diverse parentage were grown, along with four non-waxy check cultivars, at various North American cultural environments. Grain yield and functional attributes of derived flours were determined. Average grain yield of the waxy lines did not differ significantly from the average yield of the check cultivars, but significant differences were observed amongst the waxy lines. Grain hardness varied significantly amongst the waxy lines, and both hard and soft textured waxy lines were identified. Analysis of flour quality traits showed few differences between waxy lines and check cultivars for traits primarily related to protein concentration or protein quality, but many significant differences between properties primarily dependent upon starch structure, or related to milling behavior. Protein-related quality attributes of waxy wheats demonstrated environmental and genotypic variances similar to those typical of non-waxy wheats. Starch-related quality attributes of waxy wheats showed remarkable stability across environments, but some significant genetic variation was observed. End-users interested in employing waxy wheats should be able to select desired waxy lines, and feel confident that the starch-related functional properties will be environmentally consistent.

Last Modified: 9/22/2014
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