THE ABILITY OF SOIL BACTERIM ENTEROBACTER NIMIPRESSURALIS 32-3 TO
SYNTHESIS OF PHYSIOLOGICAL ACTIVE COMPOUNDS (PHYTOHORMONES)
Chaikovska L.A., Baranska M.I.
South Experimental Station of Institute Agricultural Microbiology of Ukrainian Academy of
Agricultural Sciences, K.Marx 107, Gvardeyskoe, Simferopol district, Crimea, Ukraine;
Phytohormones have important role as regulators of growth and development of plants . This compounds regulate the condition of rest and germination of seeds, influence on the roots-formation, flowering, branching, maturing of fruits, also increase the resistence of plants to factors of environmental. It is known three groups phytohormones, which improve growth and productivity of plants: auxin-line, gibberellin-line, citokinin-line. Synthesis of phytohormones are very important property of many bacterium of rhizosphere also epiphyting and symbiosing bacterium, so-called PGPB-strains, which stimulate and increase the growth of plants [2,3].
In our researches was revealed the possibility of soil bacterium Enterobacter
nimipressuralis 32-3 to synthesis(e) of physiological activity compounds in particular phytohormones. The excretion of physiological activity compounds were carried out in accordingly by generally accepted methods. Phytohormones from daily (twenty-four-hour) cultural liquid of bacterium E. nimipressuralis 32-3 have been excreted. In the capacity of test-
plants were used winter wheat (cultivar Albatros odessky), mais (hybrid Rosava) and cucumber (cultivar Fenix). Our experiments were carried out in laboratory conditions.
The results our experiments showed, that in cultural liquid of bacterium E.
nimipressuralis 32-3 have been revealed number (three) phytohormones of various character. For determination of phytohormones by auxin-line were used the shoots of winter wheat. The greatest growth of length shoots in diluting extract of cultural liquid has been registred (fig.1). So in diluting by 1:500 and 1:1000 of