Phenotypic variation of quantitative characteristics of winter hexaploide wheat
2004
Mandic, D.
In this thesis there was analyzed phenotypic variation of: stem height, harvest index, spike length, grain mass per spike, 1000-grain mass, grain number per spike, hectoliter mass, number of days from the first January to appearance of spike. Results of protein contents, wet gluten contents, water adsorption capacity and paste quality parameters were the basis for classification in particular quality groups. Analyzed genotypes originated from the leading world centres. All analyzed parameters showed significant phenotypic variation, which is defined with biometrical parameters like: mean value, variation coefficient as well as coefficient of regression. By mean of variance analysis, one has found significant influence of variety and year on expression of these parameters. The varieties which showed the best stability were selected on the basis of these parameters. During the research, the varieties realized about 70% of their genetic yield potential. The best yielding varieties originated from Balkan region. The most of genotypes have belonged to the quality group B-1. Significant correlation dependence was found among metric as well as technological characteristics. Obtained results will be used as the basis for additional activities in this field while separated genotypes will be taken for breeding purposes.
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