BIOLOGICAL PECULIARITIES AND ANTIMICROBIC PROPERTIES OF SPIRAEA L. SPECIES IN NOVOSIBIRSK
Biological peculiarities and antimicrobic properties of the representatives of the genus <i>Spiraea </i>L. from the collection of CSBG were studied. Maximum antimicrobic activity of the species, intraspecific forms and hybrids to test-microbes was noted in summer. Specific effect of volatile emissions of spiraea leaves on Candida albicans was revealed. Taking into account ornamental qualities and environment improving properties, four representatives of the genus were recommended for expansion of the assortment for urban plantings in Novosibirsk. In Novosibirsk there have been observed that spiraea of different backgrounds have differences in the time of budding and separation of leaves. <i>S. media, S. betulifolia, S. douglasii </i>and S<i>. ussuriensis </i>have the earliest leafy shoots. Long-term monitoring of spiraea in CSBG has showed that <i>S. x сenirea "Grefsheim" </i>(20.05±5 дней), <i>S. х arguta </i>(23.05±8), <i>S. ussuriensis</i>, (27.05±4), <i>S. media </i>(29.05+8), <i>S. hypericifolia </i>(31.05+8) have the first spring blossom. In the beginning of summer <i>S. crenata </i>(14.06+7), <i>S. trilobata </i>(15.06+5) blossom. The studies on antimicrobial properties of leaf spiraea have showed that the maximum activity in the genus <i>Spiraea </i>is observed in summer period.