Особливості морозо- і зимостійкості пшениці твердої озимої

Abstract

Aims. The set of 79 winter durum wheat varieties was studied under different periods of artifi cial vernalization and subseguent growing under long and short photoperiods. Methods. The study revealed a signifi cant difference between these varieties in vernalization response and degree of photosensitivity. Results. Modern varieties possessed low and medium photosensitivity, and had vernalization duration of 20 to 25 days. Conclusions. The best winter durum wheat varieties by adaptivity to unfavourable winter conditions need vernalization duration of 25–30 days and high degree of photoperiodic sensitivity. Keywords: durum wheat, adaptivity, vernalization duration, photoperiodic sensivity.