Gene system governing the migration coefficient in durum wheat

In this study six parameter model was used to work out the genetic architecture of migration coefficient in durum wheat involving two crosses namely HD 4502 × Cocorit 71 and Raj 91 × Cormorent under three environments. In each cross under all the three environments the F1 mean values higher than mid...

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Bibliographic Details
Published in:Cereal research communications 1985, Vol.13 (1), p.39-45
Main Authors: Srivastava, R.B, Yadav, B, Singh, V.P
Format: Article
Language:English
Subjects:
additive genes
Crop harvesting
crossing
Durum wheat
Genetic improvement
Genetic research
Genetic variation
Genetics
harvest index
Heterosis
Inbreeding depression
path coefficients
Phenotypic traits
plant breeding
Triticum turgidum subsp. durum
Wheat
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Summary:In this study six parameter model was used to work out the genetic architecture of migration coefficient in durum wheat involving two crosses namely HD 4502 × Cocorit 71 and Raj 91 × Cormorent under three environments. In each cross under all the three environments the F1 mean values higher than mid parental values indicated the presence of heterosis. The degree of heterosis was not proportional to the degree of inbreeding depression in F2 which suggested the major role of additive gene effects in the expression of this trait. Analysis of gene effects also showed the predominant role of additive genes in both the crosses for this trait under all the three environments. High heritability alongwith high genetic advance were also observed in both the crosses under all the environments. For the improvement in productivity of durum wheat, suggestion has been made to exert selection pressure on migration coefficient in early segregating generations.
ISSN:0133-3720
1788-9170