Abstract
The results of the use diagnostic DNA-markers in the breeding of strawberry (Fragaria × ananassa Duch.) were shown. The carriers of target alleles of red stele root rot resistance (F. virginiana Duch. ssp. platypetala, Bylinnaya, 69-29 (Feyerverk × Bylinnaya), 72-24 and 72-71 (Privlekatelnaya × Bylinnaya)), anthracnose resistance (Borovitskaya, Sudarushka, Elianny, Troubadour, 933-4 (F. virginiana Duch. ssp. platypetala × Rubinovyy kulon)), high mesifurane content in fruits (F. orientalis Los., F. moschata Duch., F. virginiana Duch. ssp platypetala, Lastochka, Torpeda, Flora, Samson, 932-29 (F. virginiana Duch. ssp. platypetala × Feyerverk), 56-5 (Gigantella × Privlekatelnaya)) and γ-decalactone content in fruits (F. orientalis Los., F. moschata Duch., F. ovalis Rydb., Bylinnaya, Kupchikha, Sonata, Vima Tarda) were identified. These genotypes are valuable initial forms for involvement in the breeding process to improve the strawberry assortment.
Highlights
Strawberry is the most widely cultivated berry crops
An important stage in the strawberry breeding is the identification of initial parental forms for hybridization
The promising strawberry genotypes were identified with the DNA markers: marker SCAR-R1A – Rpf1 gene [16], marker STS-Rca2_240 – Rca2 gene [17], marker FaOMT-SI/NO – FaOMT gene [12] and marker FaFAD1-F/R – FaFAD1 gene (γ-decalactone content in fruits) [18] (Table. 1.)
Summary
Strawberry is the most widely cultivated berry crops. Strawberry plantations are located in 78 countries of the world and the harvest of strawberry fruits exceeds 2/3 of the berry world production [1,2,3]. In current conditions of climate destabilization, massive development of diseases of various etiologies and increased attention to the quality of the berry products, many strawberry varieties do not sufficiently meet the market requirements. In this connection, it is necessary to carry out targeted breeding work in order to create strawberry genotypes characterized by a complex of such traits as resistance to unfavorable factors of growing conditions, high stable productivity and commodity consumer qualities of fruits [4, 5]. They should be characterized by a complex of significant breeding traits, and, to a certain extent, transmit them to their offspring, which makes it possible to increase the efficiency of creating valuable genotypes
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