RE: BLUPs of mean performance of genotypes
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: BLUPs of mean performance of genotypes

Dear Arthur,

Yes, under a random model, Genstat reports the "BLUP" of mean performance
(mu+effect) as BLUE(mu) + BLUP(effect). This is how Searle et al. (1992,
Variance Components, p 57, pp 269-272) also define/derive BLUP(mu+effect).

I will need to check how PREDICT works in ASReml.

Thanks and regards,

Subhash :: 26 Apr 2001

-----Original Message-----
From: Arthur Gilmour []
Sent: Thursday, April 26, 2001 11:59 AM
Subject: Re: BLUPs of mean performance of genotypes

Dear Subhash,

I thought Genstat just calculated  mu + BLUP

I do not think 'BLUP of mean performance'is strictly defined.

The new PREDICT statement makes this easy to calculate in ASREML.


> Date: Mon, 23 Apr 2001 02:25:38 -0700
> From: Chandra S <S.CHANDRA@CGIAR.ORG>
> Subject: BLUPs of mean performance of genotypes
> To: Arthur Gilmour <>
> Cc:
> Dear Arthur,
> ASReml provides BLUPs of genotype effects. In a fixed effects model, a
> genotype's mean performance is simply the sum of the BLUE of its effect
> the GM. In random/mixed models, this simple sum is not the BLUP of a
> genotype's mean performance. It would perhaps good if, in your final
> commercial release of ASReml, you could also provide for directly
> BLUPs of genotypes' mean performance, as in GenStat. I wonder whether all
> users of ASReml are aware of the way in which the BLUP of mean performance
> are to be obtained from the BLUP of effects!    
> Best regards,
> Subhash :: 23 Apr 2001 
Asreml mailinglist archive: