Productivity of garden strawberry and breeding possibilities to improve it

Abstract

The information on the productivity trait of garden strawberry Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier has been summarized on the basis of literary sources. The productivity trait has a complex polygenic character. Independent inheritance of individual productivity components allows modeling their optimal combination in a new variety. The creation of highly productive varieties of strawberries is based on intraspecific hybridization. The established positive correlation between the size of berries and the yield indicates the possibility of increasing the productivity of varieties by using large-fruited forms in breeding. At present, in various zones of horticulture, researchers distinguish large-fruited varieties of domestic breeding: ‘Atlas', ‘Bereginya', ‘Vityaz', ‘Grenada', ‘Zabelinskaya', ‘Kemiya', ‘Nashe Podmoscovie', ‘Nelly', ‘Pervoklassnitsa', ‘Rusich', ‘Solnechnaya Polyanka', ‘Solovushka', ‘Festivalnaya Romashka', ‘Fruktovaya', ‘Tsaritsa', ‘Yaponka', and foreign breeding: ‘Alba', ‘Asia', ‘Elsanta', ‘Finesse', ‘Florense', ‘Vivaldi', ‘Galia', ‘Jive', ‘Joly', ‘M. Champion', ‘Merced', ‘Murano', ‘Onda', ‘Roxana', ‘Rumba', ‘Tarda Vicoda', ‘Vima Kimberly', ‘Vima Tarda', ‘Vima Rina', ‘Vima Xima'. It was noted that when using the inbreeding method, it is possible to achieve a heterotic effect on the basis of the productivity trait. The method of genetic modifications of plants is of great importance for breeding of complex quantitative traits of productivity, including yield. Expansion of the genetic base of garden strawberry by means of octoploid and polyploid forms of wild species will ensure an increase in the productivity of new varieties due to the inclusion of traits of adaptability to biotic and abiotic factors in the genotype. The use of modern research methods (screening of the metabolomic and biochemical profile, DNA certification, molecular labeling) increases the objectivity of research and the efficiency of the breeding process.