Re: Diallel analysis warning message

Dear Fisrek,
re:

The second issue you pointed out is the GCA by Environment interaction
term.
The full model is ;

y = mu + site + block(rep) + GCA + SCA + GCAx Site + SCA x Site + Error

Block is nested within Site.

I included the GCA x Site Interaction terms as:
test.male and(test.female)

Your suggestion was:
 test.male -test.female and(test.female),

Could you please comment on the GCA x Site interaction term in the model?

The parsing of the and() function in ASReml is simple minded. It expects
to already know about
its argument. So
   male and(female)
works becasue 'female' is defined in the data structures

but it will not parse
 test.male and(test.female)

because it does not recognise test.female as a term that has been
defined.

However, writing
test.male -test.female and(test.female)

defines test.female (without including it in the model)
so that it is recognised when the and() term is parsed.

Grace, mercy and peace to you from God our Saviour Jesus Christ

Arthur Gilmour PhD (see http://www.cargovale.com.au/)
mailto:Arthur.Gilmour_at_dpi.nsw.gov.au
Principal Research Scientist (Biometrics)
NSW Department of Primary Industries
Orange Agricultural Institute, Forest Rd, ORANGE, 2800, AUSTRALIA

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Received on Wed Sep 29 2006 - 10:18:17 EST