[Influence of vegetation phase weather conditions on accumulation of organic acids and terpenoids in melittis sarmatica klock plants at their introduction in Belarus]
Rupasova, Zh.A. | Vasilevskaya, T.I. | Ignatenko, V.A. | Varavina, N.P. | Vecher, N.N.(Central Botanical Garden, Minsk (Belarus))
Accumulation rate of seasonal changes in the content of organic acids and some terpenoids in some parts and overground phytomass of Melittis sarmatica Klock at its introduction in Belarus has been established. It has been shown that depending on the character of weather conditions during vegetation phase, ascorbic acid content in plants' overground part ranged from 144 to 553mg% of dry substance, free organic acids - from 1,1 to 1,95; fatty oils - from 2,1 to 2,9; neutral triterpenoids - from 1,5 to 2,6; triterpen acids - from 2,4 to 3,4%. It has been established that weather conditions greatly influence accumulation rates of the investigated substances. However, the degree and direction of this influence were determined by their chemical nature and plants development stage. The most pronounced interseasonal differences (up to 65...68%) in the accumulation parameters in plants' overground phytomass were observed in the case of ascorbic acid. It turned out that accumulation rates of free organic acids and terpenoids (regardingvwhichbdeviations didn't exceed 28...40%) were less and approximately equally susceptible to the complex influence of meteorological factors
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