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An Application of Covariance Technique in Diallel Crosses for Griffing Method I & III

✍ Scribed by Dr. L. S. Kaushik; R. C. Hasija


Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
345 KB
Volume
28
Category
Article
ISSN
0323-3847

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✦ Synopsis


In the present investigation, the analysis of Covariance technique has been applied to method I & I11 of GVFFING (1966) of diallel crosrms for obtaining the precieed estimates of general combining. ability (g.c.a). specific combining ability (8.c.a) and reciprocal differences. The adjusted estimates of g.c.a, 8.c.a and reciprocal differences and sum of equsres due to them parametere and variances due to the eetimatee of parameters and their comparieons are ale0 derived. The gain in precieion in estimating the parameters due to the use of covariance technique hae been illustrated with the help of an example.


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The method of combining ability analysis of diallel crosses for Griffing method-3 for one and two missing observations has beenpresented. The forrnulaefor estimating the parameters, the variances of different estimates and the sum of squares for various effects have been presented. The given analysi