Analysis of physiological mechanisms of adaptation and resilience of winter wheat accession of different geographical origin

The aim of the study: Analyzing role morphotype traits, physiological reactions in adaptation to conditions Left Bank Forest Steppe Ukraine by studying a wide set winter wheat collection accessions and identifying valuable samples for further involving them local breeding program.
 Materials methods: article contains results research 318 different ecological geographical origin from 27 countries according complex morphological traits environmental 2020-2021 2021-2022 growing years. A field evaluation (visual score) was carried out at next parameters: state plants before wintering; assessment hardiness; speed plant regeneration spring; fixation earing date; damage foliar diseases. An accordance with methodology examination varieties common (Triticum aestivum L.) DUS-test recommended UPOV State Service, CIMMYT selection winter-hardy genotypes.
 Discussion results: Significant variation found all studied traits. Analysis temperature indicators recent years indicates changes passage autumn periods vegetation Forest-Steppe zone Ukraine. weather both study were generally favorable overwintering plants. It is worth noting that year somewhat more difficult, exhausted due presence sudden increases decreases. has been studying, what important not only frost resistance, but also resistance combination high level growth initial stages good spring period. correlation established between intensity period (r=0.653) regenerative capacity (r=0.835).
 Conclusions: Selected hardiness - Lira odes’ka, Oberih Myronivskyi, Dykanka (Ukraine) foreign Turkuaz (Azerbaijan) Andrada (Romania). following had increased (7-8 points) (8-9 Oktava Natalka, Zolotava Nosivska, Lehenda Myronivska, Bunchuk, Orzytsia Nova, PS Tashan’ (Ukraine), T67/X84W063-9-45//Karl92/3 (Turkey), AR800-1-3-1/NW97S320, NE10507 (USA). According two genotypes Septoria tritici blotch, can be use as sources Kraevyd, Mahnatka, Spivanka poliska Arctis (Germany), Apertus (Austria), AR800-1-3- 1/NW97S320