Abstract
Selecting high yielding upland cotton, Gossypium hirsutum L. lines with improved fiber quality is a primary breeding goal. A diverse set of ten cultivars and one breeding line were crossed in a half diallel. Parents and F2 hybrids were grown in three environments at Mississippi State, MS. Ten agronomic and fiber traits were analyzed by a mixed linear model approach based on the additive-dominance genetic model. Variance component, genetic effects and genetic correlations were calculated. ‘Acala Ultima’ was a desirable general combiner for fiber length, uniformity, strength, micronaire, lint percentage, and boll weight. ‘FiberMax 966’ was a desirable general combiner for fiber length, uniformity, strength, and all agronomic traits. ‘Tamcot Pyramid’ and M240 were poor general combiners for both fiber and agronomic traits. ‘Coker 315’ was a good general combiner for fiber length, uniformity, micronaire, boll weight, boll number, and yield. Heterozygous dominance effects were associated with several crosses, which suggest their use as hybrids.
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Abbreviations
- UHM:
-
Mean length of upper 50% of fibers in mm
- UR:
-
Fiber uniformity ratio in %
- T1:
-
Fiber strength in kN m kg−1
- E1:
-
Fiber elongation in %
- MIC:
-
Fiber micronaire
- HVI:
-
High volume instrument measurement
- MINIQUE:
-
Minimum norm quadratic unbiased estimation
- AUP:
-
Adjusted unbiased prediction
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Partial support for this research was provided by Cotton Incorporated, Cary, NC.
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Jenkins, J.N., McCarty, J.C., Wu, J. et al. Genetic variance components and genetic effects among eleven diverse upland cotton lines and their F2 hybrids. Euphytica 167, 397–408 (2009). https://doi.org/10.1007/s10681-009-9902-y
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DOI: https://doi.org/10.1007/s10681-009-9902-y