Abstract
The analysis of the allelic state of the Rpf1 red stele root rot gene in 14 promising foreign strawberry varieties and 6 selected forms of the I.V. Michurin FSC breeding was completed. The Rpf1 gene in a heterozygous state was identified in strawberry forms 61-15 (Bylinnaya × Olimpiyskaya nadezhda), 69-29 (Feyerverk × Bylinnaya), and 72-71 (Privlekatelnaya × Bylinnaya), which makes it possible to recommend them for involvement in breeding work to create resistant to P. fragariae var. fragariae strawberry varieties. Strawberry varieties Lebedushka, Elianny, Florence, Malwina, Monterey, Polka, Verona, Vima Tarda Asia, Chamora Turusi, Clery, Flamenco, Salsa and Symphony, and selected forms 56-5 (Gigantella Maxim × Privlekatelnaya), 69-42 (Feyerverk × Bylinnaya) and 35-16 (922-67 × Maryshka) have a recessive homozygous genotype.
Highlights
Resistance to fungal pathogens is one of the most important traits of any plant variety
The OPO-16C marker was identified in the strawberry varieties Lebedushka, Elianny, Florence, Malwina, Monterey, Polka, Verona and Vima Tarda, and selected strawberry hybrid forms 56-5 (Gigantella Maxim × Privlekatelnaya), 61-15 (Bylinnaya × Olimpiyskaya nadezhda), 69-29 (Feyerverk × Bylinnaya) and 72-71 (Privlekatelnaya × Bylinnaya)
The SCAR-R1A marker was identified in selected strawberry forms 61-15 (Bylinnaya × Olimpiyskaya nadezhda), 69-29 (Feyerverk × Bylinnaya) and 72-71
Summary
Resistance to fungal pathogens is one of the most important traits of any plant variety. Strawberry is susceptible to many diseases that affect all parts of plants: leaves, roots, flowers, fruits, etc. Among them is red stele root rot, the causative agent of which is the quarantine phytopathogen Phytophthora fragariae var. In strawberry plants affected by red stele root rot, the death of lateral feeding and adventitious roots is observed with the formation of pathogen oospores in the affected tissues, inhibition of growth and wilting [4, 5]. Strawberry resistance to red stele root rot is due to the presence in the genome of several race-specific genes, of which the Rpf, Rpf, and Rpf genes are the most important [6, 7]
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