GENETICS OF COLEOPTILE MEASUREMENTS IN THREE BREAD WHEAT CROSSES

Six basic generations, P1, P2, F1, F2, B1 and B2, of throe bread wheat crosses involving tall and semi-dwarf parents were studied to investigate the genetical control of coleoptile length and width. From the analyses of means and variances evidence is provided that considerable fixable genetical var...

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Bibliographic Details
Published in:Cereal research communications 1977-01, Vol.5 (4), p.419-430
Main Authors: VIRK, D. S., BHULLAR, G. S., GILL, K. S., POONI, G. S.
Format: Article
Language:English
Subjects:
Coleoptiles
Genetic variation
Genetics
Genotypes
Least squares
Maternal effect
Modeling
Parametric models
Statistical discrepancies
Wheat
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Summary:Six basic generations, P1, P2, F1, F2, B1 and B2, of throe bread wheat crosses involving tall and semi-dwarf parents were studied to investigate the genetical control of coleoptile length and width. From the analyses of means and variances evidence is provided that considerable fixable genetical variation can be generated for these traits by crossing genotypes within tall or semi-dwarf groups rather than attempting crosses between groups. A simple additivedominance model, on means, generally failed probably due to maternal effects but because of absence of reciprocal crosses it was not possible to distinguish between failure due to these and non-allelic interactions. It is therefore emphasised that for studies involving juvenile traits inclusion of reciprocal cross families will be greatly useful
ISSN:0133-3720
1788-9170