The effect of plant growth regulators and their interaction with electric current on winter wheat development

摘要: The aim of the experiments presented here was twofold. On one hand, to study influence plant growth regulators, i.e. auxins (IAA and NAA), cytokinins (kinetin, zeatin riboside), gibberellins: (GA3) polyamines (spermidine, spermine putrescine) on generative development winter wheat plants, while other interaction regulators with electric current in affecting efficiency flowering plants. Winter var. Grana subjected a short vernalization (2 weeks at 5°C + 10 days 10°C) Murashige Skoog medium containing different concentrations. For selected substances, seedlings were additionally treated by applying constant voltage for given period time (30 V 30 s or 1.5 V 1 h) anode cathode inserted into apical leaves reference electrode media. After that, transferred glasshouse (20/17°C) where they grown until heading achieved. All substances studied stimulated wheat, contrast non-treated plants (control), especially their highest Spermidine, kinetin GA3 most effective this process as 100–80% (whereas control percentage stood only 30% plants). also increased rate development, shortening length vegetative phase (by about comparison control). Moreover, these treatments decreased fresh mass both number spikelets ear. treatment interacted applied substances: insertion generally increased, whereas decreased, inductive effect development. However, inhibition more pronounced than induction. passage shortened heading. This decrease visible after leaves. least noticeable observed auxins.