منابع مشابه
Optimal Designs for Best Linear Unbiased Prediction in Diallel Crosses
Most of the available results on optimal block designs for diallel crosses are based on standard linear model assumptions where the general combining ability effects are taken as fixed. In many practical situations, this assumption may not be tenable since often one studies only a sample of inbred lines from a possibly large (hypothetical) population. Recently Ghosh and Das (2003) proposed a ra...
متن کاملA-optimal diallel crosses for test versus control comparisons
A-optimality of block designs for control versus test comparisons in diallel crosses is investigated. A sufficient condition for designs to be A-optimal is derived. Type S 0 designs are defined and A-optimal type S 0 designs are characterized. A lower bound to the A-efficiency of type S 0 designs is also given. Using the lower bound to A-efficiency, type S 0 designs are shown to yield efficient...
متن کاملPartial Diallel Crosses
A diallel cross is a set of all possible matings between several genotypes, which may be individuals, clones, homozygous lines, etc. Such crosses are used to estimate general and specific combining abilities of lines and crosses respectively. For ‘n’ inbreed lines, the possible F1’s are n(n–1)/2, which are to be tested in a suitably replicated randomized design. With facilities available for te...
متن کاملOptimal Diallel Cross Designs for the Interval Estimation of Heredity
The results on optimal diallel cross designs are based on standard linear model assumptions where the general combining ability effects are taken as fixed. In many practical situations, this assumption may not be tenable since often one studies only a sample of inbred lines from a possibly large hypothetical population. A random effects model is proposed in this paper that allows us to obtain a...
متن کاملRobustness of Diallel Cross Designs Against the Loss of Any Number of Observations ( Crosses ) in a Block
The robustness of universal optimal binary balanced block (BBB) designs for diallel crosses has been investigated for the loss of any t (~1) observations (crosses) in a single block as per connectedness and A-efficiency criteria. It is observed that all the BBB designs for diallel crosses with the minimum eigenvalue strictly greater than 2 are robust as per connectedness criterion. Further A-ef...
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ژورنال
عنوان ژورنال: Metrika
سال: 2009
ISSN: 0026-1335,1435-926X
DOI: 10.1007/s00184-009-0236-5