Vigour variability in hybrid kernels of triticale with Aegilops under the influence of biostimulation

anglais. The influence of a variable magnetic field of 30 mT magnetic induction and frequency f = 50 Hz, at different exposure times (8, 15, 30, 60 and 120 s), as well as an electric field of 5 kV cm-1 intensity and the same frequency and exposure times on kernel vigour of triticale with Aegilops hybrids and triticale (cv. Tewo), were studied. The aim of the research has been to choose suitable parameters for kernel biostimulation and find the application for results in further studies. The following methods for vigour evaluation have been used: germination ability, sprout length, germ necroses using the topographic tetrasolin method, electric conductivity of exudates from kernels and a-amylase activity. Positive effects of variable magnetic and electric fields on kernel vigour have been found. Grains subjected to an electric rather than a magnetic field have been characterized as having higher vigour. The best exposure time for kernels in a magnetic field was 60 s and in an electric field 30 s. The cross-combination produced using Ae. crassa 4x was characterized as having higher vigour than that obtained with Ae. juvenalis 6x. Tewo cultivar had a higher power and ability of germination than hybrid lines.

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