Heritabilities of small-scale and standard measures of wheat quality for early generation selection
1987
O'Brien, L. (Victorian Dept. of Agriculture and Rural Affairs, Horsham (Australia). Victorian Crop Research Inst.) | Ronalds, J.A. (Commonwealth Scientific and Industrial Research Organisation, North Ryde (Australia). Wheat Research Unit)
Offspring-parent heritability estimates are compared for a number of small-scale early generation quality tests with those from standard macromeasures of wheat quality for their application to early generation selection for wheat quality. Heritability estimates are reported for two new small-scale tests, the proportion of total flour protein insoluble in dilute acetic acid (residue protein) and the sodium dodecyl sulfate sedimentation volume. Materials utilized in this study were 21 random F3 lines and their derived F4 bulks from each of seven wheat crosses. Despite the effects of genotype x environment interactions in reducing heritability, the estimates reported indicate that, where seed quantity is limiting, good average response to early generation selection can be expected using tests to estimate grain hardness, flour protein content and a measure of protein quality. When seed quantity is not limiting, good average response to early generation selection can be expected using the standard macromeasures of wheat quality.
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