COMPLEX ASSESMENT OF BLACK CURRANT ELITE VARIETIES OF FSBSI FARC OF THE NORTH-EAST SELECTION
Seven elite varieties of black currant of FSBSI FARC of the North-East (FEDERAL STATE BUDGET SCIENTIFIC INSTITUTION FEDERAL AGRICULTURAL RESEARCH CENTRE) selection were studied during 2013-2017. On average, positive rise in productivity of a pilot sort “ Vologda ” (5.0 t/ha.) was noticed in a form 60-6-96 (7.4 t/ha.) in a period of research (2013-2017). It is proved, that varieties and forms of studied crop achieve maximal productivity in 4-5 years. It was identified that six selected forms have high self-fertility (52.8-80.1%) and the form 60-6-96 has a good self-fertility (46.7%) with a certain positive rise of a pilot sort. According to the rate of large fruitiness (average weight of one berry is 1.2g.), two forms were distinguished: 60-6-96 differed in feature stability (V=8.22%) and 28-7-03 with moderate variability of an index (V=15.93%). As a result of berry’s quality evaluation, the following forms were distinguished: 60-6-96 with tastefulness and high sugar-acid index (SAI); 5-5-96 with combination of vitamin C concentration and tastefulness; 29-7-03 with tastefulness, high concentration of sugar and SAI. During the research, maximum damage of currant gall mite didn’t exceed 1.0 point among forms 60-6-96 and 30-9-03, what tells us about their steadiness. The form 60-6-96 has resistance to mildew (maximal extent of injury is 0.5 points). According to economically-valuable features, 1 selected form 60-6-96 was distinguished and sent to state variety test under a label of “Shagane”; also, the sources of complex features were distinguished: the form5-5-96 with combination of high productivity, tastefulness, and vitamin C concentration; the form 29-7-03 with combination of high sugar concentration and tastefulness; and the form 30-9-03 having resistance to currant gall mite.