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2020, № 83

UDC: 631.811.982+581.142
GSNTI: 68.35.29

Exogenous phytoghormones effect on the growth of winter wheat, depending on the seeds germination temperature and humidity

The effect of exogenous phytohormones: auxin (in the form of heteroauxin), cytokinin (in the form of kinetin) and gibberellin (in the form of G-4) on the winter wheat seeds germination rate at different temperatures and substrate humidity was studied. It was shown that exogenous auxin and cytokinin at optimal temperature and humidity stimulated the growth of seedlings, and under stress conditions, on the contrary, they inhibited the growth processes. Treatment with gibberellin, regardless of the conditions resulted in stimulation of winter wheat seedling growth. The change in the growth rate under the effect of exogenous phytohormones was associated with the change in the catalase activity of the seedling tissues: when the growth processes were stimulated, the catalase activity of the tissues of the aboveground parts of the plants decreased, and when the growth was inhibited, it increased.
Keywords: Winter wheat, phytohormones, growth rate, catalase activity, temperature, humidity
DOI: 10.21515/1999-1703-83-130-135

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Authors:

1. Podushin Yuriy Victorovich, PhD in Agriculture, associate professor; Plants Physiology and Biochemistry Department, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
2. Fedulov Yuriy Petrovich, DSc in Biology, professor, head; Plants Physiology and Biochemistry Department, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
3. Degtyarev Eugeniy Andreyevich, student, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
4. Donskoy Alexander Vladimirovich, student, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
5. Zaika Gleb Eugenyevich, student, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.