Theoretical and Applied Genetics

, Volume 86, Issue 2–3, pp 234–236 | Cite as

Estimation of components of genetic variance and heritability for flowering time and yield in gerbera using Derivative-Free Restricted Maximum Likelihood (DFRML)

  • Y. Yu
  • J. Harding
  • T. Byrne
  • T. Famula


Additive genetic components of variance and narrow-sense heritabilities were estimated for flowering time (FT) and cut-flower yield (Y) for six generations of the Davis Population of gerbera using Derivative-Free Restricted Maximum Likelihood (DFRML). Additive genetic variance accounted for 54% of the total variability for FT and 30% of the total variability for Y. The heritability of FT (0.54) agreed with previous ANOVA-based estimates. However, the heritability of Y (0.30) was substantially lower than estimates using ANOVA. The advantages of DFRML and its applications in the estimation of components of genetic variance and heritabilities of plant populations are discussed.

Key words

Additive variance Maximum likelihood General Linear Model Selection Gaussian elimination Plant pedigree matrix 


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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Y. Yu
    • 1
  • J. Harding
    • 1
  • T. Byrne
    • 1
  • T. Famula
    • 2
  1. 1.Department of Environmental HorticultureUniversity of CaliforniaDavisUSA
  2. 2.Department of Animal ScienceUniversity of CaliforniaDavisUSA

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