Abstract
This article presents the results of research on the identification of informative DNA marker systems, providing reliable control of the resistance gene to fusarium wilt Foc1 presence in white cabbage breeding material. At the beginning of the work 14 molecular markers, taken from VegMarks database and literature sources were tested on isogenic white cabbage lines with contrasting resistance to fusarium wilt (resistant line DT-46 and susceptible line Kb1P). InDel-marker M10 and SSR-markers Frg13 and O110-D01 have been ascertained to show polymorphism between white cabbage forms with contrasting resistance to fusarium wilt. Also PCR-analysis of segregating F2-population plants of hybrid combination DT-46 × Kb1P using these markers and phytopathology testing have been conducted. As a result of statistical analysis of segregation it has been found that SSR-marker Ol10-D01 only is cosegregated with the trait of resistance to fusarium wilt as expected segregation of F2-plants by genotype 1 : 2 : 1 according to Mendel’s law, the least recombination frequency between the resistance gene Foc1 and the marker (1.6%) has just been observed by this locus only and highly polymorphic (PIC = 0.51).
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