Uman NUH | today: 05/21/2019

Genetic value of sugar beet pollinators of uman selection as to sugar content and their phenotypic display in topcrossed F1 hybrids

Author(s) Korneeva M.O., Ph.D., ,
Nenka O.V., Postgraduate, ,
Category The Agronomy
year 2013 issue Випуск №83. Частина 1
pages 162-168 index UDK 633.63.631.52
Abstract The urgent problem in modern selection is the selection of breeding pairs to form a hybrid combinations with high effect of heterosis based on sugar content. Goal and objectives. Installing the predominant type of gene interactions in the formation of symptoms in sugar beet of topcrossed hybrids and selection of matching-capable pollinators — components of Cytoplasmic Male Sterility (CMS) hybrids. Methodology of research. Hybrid combinations involving six polyspermous pollinators of Uman selection were received according to the type of topcrossing. Mathematical processing of the experimental data was performed with the method of topcrossed testing of hybrids in the field. Results of research. Analysis of variance revealed significant differences in sugar content between the studied hybrids involving polyspermous pollinators. It is possible to differentiate selection materials for genetic breeding value and select the best among them for further selection study. Its lines with polyspermous pollinators 2 (PP2) and PP1 hybrids were obtained with the highest sugar content by 17.57 and 17.5%. Conclusions. Genetically valuable on the basis of sugar lines PP1 and PP2 are recognized, characterized by significantly high effect of CMS. In combination PP1 / T (tester) 4, PP 1 / T 2, BR 3 / T 4 heterosis effect on sugar content is observed.
Key words heterosis, combining ability, hybrids, polyspermous pollinator.
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