Evaluation of the scab immune apple varieties and hybrids suitable for juice production

Based on the technological evaluation of 105 immune V _f and highly resistant V _m to scab apple varieties of the All-Russia Research Institute for Horticultural Plant Breeding suitable for juice production, 16 varieties perspective for raw material production are specified with the juice output from 70.4% (Orlovskoe Poles’e) to 65% (Rozhdestvenskoe), the content of the soluble dry substances not lower than 11%, and organoleptic properties higher (4.5–4.3 points) than in the control variety Antonovka obyknovennaya. A higher juice output is reliably defined in the summer varieties as compared to the winter ones. The character of appearance of some technological features of the fruits (juice output, content of soluble dry substances, organic acids, P-active catechins) is specified in the scab immune hybrid apple progeny of 28 hybrid families.     

Sinap Orlovsky triploid apple cultivar: Its origin and cytoembryological characteristic

This paper gives the development history of the best apple cultivar of the temperate zone of Russia— the Sinap Orlovsky apple cultivar with fruit of a long storage life, which has hitherto been considered to be a diploid one. The assumption of its triploidy has come into existence due to DNA-markers. Cytoembryological studies showed in 2016 that the cultivar was a triploid. It is characterized by vigorousness and regular fruit bearing. The long-term experimental data show that the cultivar is of little promise as an initial form for the development of a large hybrid fund owing to its low fruit output, hybrid seeds, and one-year seedlings relative to pollinated flowers in case of its being used as a maternal and paternal parent.