L.N. Chindyaeva - Ph.D. (Biol.), Senior Research Scientist, Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk). Email: lnikch@yandex.ru
T.I. Kiseleva - Ph.D. (Biol.), Research Scientist, Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk)
N.V. Tsybulya - Ph.D. (Biol.), Senior Research Scientist, Central Siberian Botanical Garden of the Siberian Branch of the Russian Academy of Sciences (Novosibirsk)

Seasonal antimicrobic activity of volatile compounds of Amygdalus nana leaves was studied on three test-microbes: Staphyllococcus epidermidis, Escherichia coli and Candida albicans (as assayed by colony growth inhibition by a piece of leaf followed by score-based activity estimate). Moderate activity in relation to all test microbes in mid summer and maximum leaf activity in relation to Bacterium coli at the end of the vegetative season have been revealed.