Analysis of the influence of varietal characteristics of blackberries on quantitative traits in connection with further breeding in Russia

Abstract

Abstract Blackberry is a berry culture of the genus Rubus L., which is just beginning to spread in Russia. At the moment, the only domestic variety has been registered, in connection with which there is a need to study foreign varieties as donors of valuable traits. The aim of the study is to assess the influence of varietal characteristics on the quantitative traits of blackberries for further breeding. The article discusses eight varieties of blackberries ('Karaka Black', 'Natches', 'Loch Tay', 'Columbia Star', 'Ark Prime Freedom', 'Black Gem', 'Black Magic', 'Heaven Can Wait'), which were grown in the Rostov region (Russia). To determine the effect, the method of one-way statistical analysis was used. High proportions of factorial influence on berry weight (84%), berry length (81%), amount of sugars (96%), average number of drupes per fruit (76%), average number of replacement shoots (80%), total length of replacement shoots were revealed. (77%), potential number of cuttings from one bush (77%), number of fruits on the lateral (64%), length (67%) and width of the central leaflet (47%), length of the petiole (54%), yield (60% ). No significant influence of the cultivar on the thickness of the petiole, the number of leaves and the average height of the replacement shoots was found. Since the characteristics of a variety make a significant contribution to the variability of traits, a number of varieties with a high or low value of the variable for a trait can become their donors.