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NEW CULTIVAR OF OIL RADISH SIBIRYACHKA

The paper presents the results of research into breeding of the new cultivar of oil radish Sibiryachka by the method of multiple individual selection during the period 2008-2018. The cultivar of oil radish Tambovchanka was used as an initial material. The studies were conducted in the foreststeppe zone of Western Siberia (Novosibirsk region) in the breeding nurseries laid on fallow by a widerowed method. Well-developed plants were selected in the field conditions, which were then used for selection of the most productive forms for further sowing, on the basis of the thorough laboratory analysis of the components of the seed yield. For comparative analysis the initial standard cultivar Tambovchanka was used. The main attention in the selections process was paid to high seed and feed productivity, early maturity, resistance to main diseases and pests. As a result, after conducting five selection cycles, a complex hybrid population was obtained, which, in the contest trial during three years, showed an advantage over the standard cultivar by seed and dry matter yield, as well as by stability of seed yield. It was submitted for the state cultivar test with the name Sibiraychka. The main economically valuable features of the oil radish cultivar Sibiryachka are as follows: the average yield of green mass is 33.6 tn/ha, seeds – 1.2 tn/ ha, the seed protein content is 28%. The cultivar is early-ripening, so the duration of the growing season is 89-101 days. It reaches mowing ripeness in 59-75 days. The leaf formation of the cultivar is 41-59%. The new cultivar is resistant to major diseases and pests and is intended for fodder and green manure use. The cultivar was included in the State register of breeding achievements suitable for cultivation on the whole territory of the Russian Federation in 2018. The copyright certificate and patent were received.