engleski

Estimation of genotypic divergence in European collection of Pisum species for yield related traits

Characterization of the important traits of pea genotypes (yield and yield components) can facilitate the creation of breeding populations for further selection. Research work was conducted on 23 genotypes of peas with the aim of grouping and determination of holders of quantitative traits (yield and yield components) for future breeding process. Cultivar selection was done based on the cultivars presence in large scale production in South-East Europe. Field trial was conducted during two vegetation years, major quantitative traits were measured and major qualitative traits were evaluated. The resulting data were analyzed by basic statistical methods (mean and standard deviation), analysis of variance, principal component analysis and hierarchical cluster analysis. Statistically significant genetic diversity was found for most researched traits. Most of the researched traits were under great influence of the environment, while the environment influence had least impact on the absolute grain mass. In PC analysis first two PC axes explained 79.16% of differences. The strongest association between the traits was obtained for: height of the first pod and total plant height ; grain yield and the absolute mass of grains. These two groups were in opposition. The product of the hierarchical cluster analysis was five clear clusters grouped on the basis of nine quantitative traits and three morphological traits.

raznolikost ; Pisum sativum L. ; varijabilnost ; prinos ; komponente prinosa

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