Hello Vince,
>
> I have simulated a field experiment where I know the 'true' genoeffects
> value. Now I have run this simulated data-set through ASREML and wish to
> correlate the 'true' genoeffect vrs the corresponding Blup estimates.
>
> I have simulated an unreplicated trial, and fitted the model;
>
> Yield ~ mu c(check) ! geno Ar(1).Ar(1)
>
I presume your test genotypes are nested within a 'Testline' level
of Check and are coded 0 for plots which receive a proper Check variety.
>
> Referring to the .sln file would the
>
> corr( 'true sim genoeffects' vrs BU)
>
> be equal to the
>
> corr( 'true sim geno effects' vrs PREDVALS)
>
> How exactly do you work out PREDVALS. Is it just
>
> (mu +BLUP geno)?
These two correaltions would be the same provided the test lines [geno]
all related to the same level of Check [C_t], there was stricly only one
replicate
and that predicted values for the Check plots were ignored.
For the test lines, the PREDVAL would be mu + C_t + u_i
>
If I remember correctly, Var [ u ] [ G G ]
[uhat ] = [ G G+E ]
so the expected regression of uhat on u is 1.
> Many thanks for your assistance.
>
> Kind regards
>
> Vince
>
>
>
> Vince Matassa
> Department Of Agriculture
> BIOMETRICS SECTION
> University Of Queensland
> Brisbane 4072
> Australia
>
>
>
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