Heterogeneous variance model in ASREML

All,

I would like to fit a heterogeneous variance model for a data from an
across location Randomized Complete Block design, equivalent to SA PROC
MIXED statement as shown below along with the output from SAS. I will
appreciate if anyone can provide the appropriate syntax in ASREML for
the R matrix.

proc mixed data = temp;

    class rep location pedigree;

    model fruit_set_mean = pedigree location pedigree*location /
ddfm=satterth;

    random rep(location);

    repeated / group = location r rcorr;

run;

Covariance Parameter Estimates

Cov Parm Group Estimate

Rep(Location) 0.002700

Residual Location L1 0.01740

Residual Location L2 0.005008

Residual Location L3 0.004578

Thanks.

-Subash

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Received on Sat Aug 21 2009 - 14:38:42 EST