Summary
Genetic components of variance and heritability of flowering time (FT) were estimated for 5 generations of the Davis Population of gerbera using the NCII design. Estimates of narrow-sense heritability averaged 0.50; those of broad-sense heritability, 0.77. Narrow-sense heritability was also estimated with two models of parent-offspring regression, resulting in average heritability of 0.49 and 0.51. Estimates of the components of variance indicated that the major genetic effect controlling FT is additive. However, the dominance component accounted for 28% of the total variance; the environmental component was only 23%. FT was not selected over the six generations in this study. A predictive model suggests that FT can be reduced by selection in this population.
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Yu, Y., Byrne, T. & Harding, J. Quantitative genetic analysis of flowering time in the Davis Population of gerbera. I. Components of genetic variance and heritability. Euphytica 53, 19–23 (1991). https://doi.org/10.1007/BF00032027
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DOI: https://doi.org/10.1007/BF00032027