Assessment of winter triticale genotypes in the selection of grain-feed varieties for the foothill zone of the Central Caucasus

The article presents the results of evaluation of winter triticale initial material for economically valuable traits for grain and forage areas breeding varieties. The object of research were winter triticale cultivars of different ecological and geographical origin: Hortenso, Moderato (Poland), Prader (Switzerland), TGI 22/1, GR-16/2 (Russia), 88 T 142 KS (USA). Grade Valentin 90The was taken as standard. Statistical methods for evaluating grades plasticity and stability as well as plant productivity index (PPI) were used to assess the genotypes adaptability. It is specified that yields above 1 t/ha on average over the three years showed the following cultivars: Moderato (1,05 t/ha), GR 16/2 (1,14 t/ha) and Hortenso (1.19 t/ha). The following cultivars: Valentin 90 (13,2), Hortenso (12,7), GR 16/2 (13,5), Moderato (11,6) were highly productive according to PPI. In terms of ecological plasticity varieties were divided into groups: the value of bi close to one – varieties well adapted to the conditions of the region (Prader, Hortenso, GR 16/2), extensive varieties – bi less than unity (KS 88 T 142), intensive varieties – bi is greater than unity (Valentin 90, TGI 22/1, Moderato). In terms of homeostasis and breeding values the cultivars were distributed in the following order: Hortenso, GR-16/2, Valentin 90, Prader, TGI 22/1, Moderato, KS 88 T 142. Additional data obtained by the provocative sloping sites to determine the potential productivity and aftergrowth capacity. The best regeneration ability showed the following cultivars: Hortenso, GR 16/2, Moderato, Prader.