Prospects for obtaining new primocane-fruiting raspberry varieties in the Southern Cisbaikalia

Abstract

Studies were carried out in 2019-2022. The varieties successfully adapted to the conditions of the region were selected as parental forms. Over 170 primocane-fruiting raspberry seedlings were obtained from open pollination during the years of research, 105 of which showed primocanefruiting capacity. The selection was carried out according to the following characteristics: thorniness, early ripening, stampiness, damageability by fungal infections, the weight and size of the fruits. The overwintering of the seedlings obtained from open pollination of such varieties as Gerakl, Oranzhevoye chudo, as well as form 1-220-1 was 100%. The largest number of early ripening samples was noted among the seedlings obtained from open pollination of the Zolotyye kupola variety (26%). The largest number of stamp plants was found in hybrid progenies of the Yevraziya and Pingvin varieties (50 and 53.3%, respectively). More than 50% of the seedlings of such varieties as Gerakl, Rubinovoye ozherel’ye, Pingvin, Yevraziya, and forms 37-15-4 and 32-151-1 had hard thorns on the stems. Slightly more than 19% of the varieties had a smooth stem. As a result of the selection, early and mid-ripening genotypes of primocane-fruiting raspberry that are promising for use in breeding in the Irkutsk region were obtained.