Re: Diallel analysis warning message

From: Fikret Isik <fisik_at_UNITY.NCSU.EDU>
Date: Thu, 28 Sep 2006 10:15:34 -0400


Thanks you for the suggestion. I received similar warning from Greg

The second issue you pointed out is the GCA by Environment interaction
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?



arthur.gilmour_at_DPI.NSW.GOV.AU wrote:

>Dear Fislik,
>There are two issues in the job.
> test 6 !I # number of locations
> rep !I # blocks are nested within locations
> female !I
> male !I
> rust
> height
>c:\research\tip\mw\ind_2.csv !SKIP 1 !DOPART 1
>!PART 1
>height ~ mu test rep.test !r,
>male and(female) test.male and(female) male.female test.male.female
>predict male
>First, for 'male and(female)' to correctly overlay the male design
>matrix with the
>female design matrix, the columns MUST correspond which means that the
>ith 'male'
>must be the same individual as the ith 'female'
>female !I male !I
>is most unlikely to achieve this (unless the initial N lines in the data
>file referred to the selfing
>of all N individuals)
>Assuming N was 30 (26 appearing as males and 22 appearing as females)
>female 20 male 20
>would achieve the desired effect if the individuals are comformaby coded 1
>... 30 in these feilds of data file
>Otherwise, create a 'pedigree file' which lists the (30) individuals
>40245 0 0
>52645 0 0
>and then use
> female !P male !P
>so they are coded comformably.
>Issue 2:
>The second line of the model will need to be written
>male and(female),
> test.male -test.female and(test.female),
> male.female test.male.female
>if I understand your intention.
>Grace, mercy and peace to you from God our Saviour Jesus Christ
>Arthur Gilmour PhD (see
>Principal Research Scientist (Biometrics)
>NSW Department of Primary Industries
>Orange Agricultural Institute, Forest Rd, ORANGE, 2800, AUSTRALIA
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Received on Tue Sep 28 2006 - 10:15:34 EST

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