Системи контролю початкового розвитку сучасних селекційних зразків озимих зернових колосових культур у СГІ – НЦНС

• Published in: Фактори експериментальної еволюції організмів
• Date: 2015
• Main Authors: Стельмах, А.Ф., Файт, В.І.
• Format: Article
• Language: Ukrainian
• Published: Інститут молекулярної біології і генетики НАН України 2015
• Subjects: Прикладна генетика і селекція
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/177378
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Системи контролю початкового розвитку сучасних селекційних зразків озимих
 зернових колосових культур у СГІ – НЦНС / А.Ф. Стельмах, В.І. Файт // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2015. — Т. 16. — С. 156-160. — Бібліогр.: 8 назв. — укр.

Aims. To evaluate breeding lines and cultivars on their vernalization requirement duration and photosensitivity level.
 Methods. Heading date registration after various duration of artifi cial vernalization and planting in long and short
 daylength. Results. The majority of modern winter bread wheat lines showed lowered vernalization requirement and
 weak photosensitivity, possibly relating to higher yield. And only solitary stocks revealed stronger reactions, although
 they relate to frost resistance improvement. The lines of alternative barley revealed very strong photoreactions which
 compensate their losses in autumn initial development delay due to almost full absence of vernalization requirement. The
 last characteristic was expressed (even pronounced — more than 40 days) in typical winter stocks, what allows to expect
 suffi cient frost resistance when it is followed by strong photosensitivity, although the last was revealed in rare winter lines
 yet. Conclusions. Leading breeders of cereals are again interested in evaluation of physiological systems infl uencing
 initial development as having adaptive value.
 Keywords: winter wheat and barley, modern breeding lines, vernalization requirement duration, level of photosensitivity.