Preliminary results of selection of clones of common hops (Humulus Lupulus L.) for breeding new varieties of bitter and aromatic types

Abstract

The article covers information on the preliminary results of breeding work carried out in the Chuvash Republic in 2002-2017 on production of new high-yielding hops varieties of bitter and aromatic types with high content of alpha acids. The basis of clonal selection method is the production of stable over time introduced population characterized by a high level of polymorphism in the main economically important traits. The method of clonal selection of hops, as a vegetative propagated culture, allows to select plants with tending to positive indicators in a population of one variety or a mixed variety and to fix these characteristics in the progeny in the course of further work. From the high-yielding varieties with high content of alpha acids selected in the collection 7 hops varieties were chosen for further work. Depending on the weather conditions and age of plantings preliminary data on the parameters of the basic clonal selection material were obtained. Two clones with the following parameters were selected. Clone 1-17 of bitter-aromatic type, growing season length is 100 days, the wet hop yield is 4.1 kg per a plant, the content of alpha acids in cones is 9.5%. Clone 6-26 of bitter type, growing season length is 112 days, the wet hop yield is 4.3 kg per a plant, the content of alpha acids in cones is 9.5%.