GROWTH PROCESSES IN CORN PLANTS AND CHANGE IN A
PHYTOHORMONAL COMPLEX UNDER INFLUENCE OF ADVERSE
TEMPERATURES
K.Terek, O.Holovatch, O.Terek
Ivan Franko National University of Lviv, Hrushevskyi st.4,UA-79005 Lviv, Ukraine
e-mail: biofr@franko.lviv.ua
Is shown, that hypo- and hyperterm conditions (+ 8, + 42°Ñ) result in decrease of growth processes in roots and shoots of corn plants. Protective role are capable to execute 6-ÂÀÐ (10-11Ì) and new Ukrainian regulator of growth - zeastymulin (1:103). Thus the biological activity of endogenous phytohormones - IAA, ABA and cytokinins changes. Zeastymulin raises biological activity of zeatine and zeatine-riboside, that promotes start of reparation processes after a thermal shock. That is, adaptive opportunities of plants, the tolerance to influence low and heats substantially depends from phytohormonal of a complex.
Key words: maize, growth, unfavorable temperatures, phytohormones.
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