# Flowering time from Atwell et al. (2010): accession means.

### Description

Accession means for the flowering time data contained in `LD`

and `LDV`

.

### Usage

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### Format

Data-frames with flowering time means:

`genotype`

a factor, the levels being the accession or ecotype identifiers

`LD`

Flowering time under long days, in number of days

`LDV`

Flowering time under long days and vernalization, in number of days

### Details

Following Kruijer *et al.* (appendix A)
these means were defined as the least-squares estimate for the factor accession, in a linear model
containing both accession and replicate effects.
Consequently there are differences compared to Atwell *et al.* (2010), where just the
arithmetic averages are considered.

### References

Atwell, S., Y. S. Huang, B. J. Vilhjalmsson, G. Willems, M. Horton,

*et al.*(2010) Genome-wide association study of 107 phenotypes in Arabidopsis thaliana inbred lines. Nature 465: 627-631.Kruijer, W.

*et al.*(2015) Marker-based estimation of heritability in immortal populations.*Genetics*, Vol. 199(2), p. 1-20.

### See Also

Together with the covariance matrices contained in `R_matrix_LD`

and
`R_matrix_LDV`

, the means contained in `means_LD`

and `means_LDV`

can be used to estimate heritability, using the function `marker_h2_means`

.
For the corresponding genetic relatedness matrix, see `K_atwell`

.
For the individual plant data, see `floweringTime`

.

### Examples

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