SELECTION OF SUGAR BEET BREEDING MATERIAL WITH A VALUABLE GENETIC BASE

Article language

українська

Print date

24.04.2026

Date posted online

29.05.2026

Institution

Verkhniachka Experimental Breeding Station of the Institute of Bioenergy Crops and Sugar Beet of NAAS

Bibliography

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Section

SOURCES AND DONORS

Abstract

Aim. To develop a methodology for creating multigerm pollinators as candidate male components for tests hybrids on a male-sterile basis. To achieve this, genetically valuable breeding sources and donors were selected to identify combinable pollinators characterized by high adaptive potential and valuable agronomic traits.

Results and Discussion. Using classical breeding methods, parental components were obtained, specifically new pollinator components for sugar beet hybrids. The root yield and sugar content of Verkhniatska pollinator components were found to depend on multiple factors, primarily the genetic potential of the initial breeding material. To improve these pollinator components, backcrossing was performed using a polycross design, followed by an evaluation of their per se productivity. Hybridization facilitated the accumulation of genes for desirable target traits and broadened the genetic base of the progeny. The resulting multigerm synthetics were evaluated using a topcross scheme as male components for topcross CMS hybrids, yielding sufficient seeds for subsequent field trials. In addition to the genetic characteristics of the paternal lines, biotic and abiotic factors within the study area significantly influenced the offspring performance.

Conclusions. Based on genetically valuable breeding forms-donors, new multigerm male components were developed that ensure high productivity even under environmental stresses. Promising breeding accessions with a high proportion of valuable genotypes, high adaptive potential, and a broad genetic base were selected. Their hybridization with CMS lines produced test hybrids with high performance indicators. Promising, highly combinable biotypes with stable trait expression adapted to unstable precipitation were identified.

Keywords

sugar beet, donor, genotype, component, hybrid, heterosis