Correlated Inheritance of Maturity and Quality Factors in a Hard Red Winter Wheat Cross1
- A. M. Schlehuber,
- D. C. Abbott,
- B. R. Jackson and
- B. C. Curtis2
Simple correlations between maturity and 14 quality characteristics were evaluated for F4 progeny of a hard red winter wheat cross between an early, mellow gluten variety with a late, strong gluten variety. Correlation coefficients were low and statistically nonsignificant except for those relationships between maturity and sedimentation and maturity and specific sedimentation. In 12 other correlations between maturity and quality characteristics, the values were low and statistically nonsignificant. For all 14 quality characteristics, the range of the F4 exceeded the 2 parents. Midparent values equaled the progeny means in 7 characteristics, exceeded the progeny means in 5 characteristics, and were less than the progeny means in 2 characteristics (sedimentation and specific sedimentation).
Genotypic and phenotypic correlations between heading date and eight quality characteristics tended to be small and indicated no strong genetic association which would impede selection for early maturity lines with good milling and baking quality characteristics. Heritabilities ranged from 25% for flour extraction to 78% for bake mixing time and to 87% for heading date. Results from lines selected for quality characteristics and early heading and grown continuously from F4 through F7 clearly indicated that selection was effective in improving mixograph mixing time, sedimentation, and protein content while maintaining maturity equal to the early parent.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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