Re: pedigree and GxE analysis

From: Ari Verbyla <Ari.Verbyla_at_ADELAIDE.EDU.AU>
Date: Tue, 11 Jan 2005 16:38:07 +1030

Dear Ky (and ASReml users)

Helena Oakey is doing a PhD in BiometricsSA at the University of
Adelaide (supervisors are Brian Cullis, Wayne Pitchford and me!) on
incoporating pedigree information in such analyses and is currently
writing two papers on her research.



Ky Mathews wrote:
> Dear ASREML users,
> I'm using pedigree information in the form of a generalised inverse
> relationship matrix (coefficient of parentage matrix in crop terminology) in a
> genotype by environment model.
> The model I'm using with BLUEs and weights from single site analysis is:
> yld !WT yldwt ~ mu site !r site.giv(gen),
> !f mv
> 1 1 0
> 2922 0 IDEN !S2==0.3118207 #yld
> predict site gen
> This model works and the values seem sensible however I'm having trouble
> finding examples of others doing this, although there is a example of how to
> set up the code in the latest ASREML manual using site and variety factors...
> Has anyone done something similar and investigated how the site.gen variance
> component changes with the inclusion of the pedigree infromation? And/or
> described the theory?
> Many thanks
> Ky
> Dr Ky L Mathews
> CSIRO Plant Industry
> Queensland Bioscience Precinct
> 306 Carmody Road
> St Lucia QLD 4067 Australia
> Ph: +61 7 3214 2255
> Fax: + 61 7 3214 2950
> Email:
> "Its a poor sort of memory that only works backwards" - Lewis Carroll

Assoc. Prof. Ari Verbyla,
School of Agriculture and Wine,
University of Adelaide,        International:
and SARDI                             Phone: +61 8  8303 6760
Private Mail Bag 1,                   Fax:   +61 8  8303 6761
Glen Osmond,                      Australia:
South Australia, 5064,                Phone:    08  8303 6760
AUSTRALIA.                              Fax:    08  8303 6761
CRICOS Provider Number 00123M
This email message is intended only for the addressee(s)
and contains information that may be confidential and/or
copyright.  If you are not the intended recipient please
notify the sender by reply email and immediately delete
this email. Use, disclosure or reproduction of this email
by anyone other than the intended recipient(s) is strictly
prohibited. No representation is made that this email or
any attachments are free of viruses. Virus scanning is
recommended and is the responsibility of the recipient.
Received on Mon Jan 11 2005 - 16:38:07 EST

This webpage is part of the ASReml-l discussion list archives 2004-2010. More information on ASReml can be found at the VSN website. This discussion list is now deprecated - please use the VSN forum for discussion on ASReml. (These online archives were generated using the hypermail package.)