COMPARATIVE CHARACTERISTICS OF THE RHYTHM OF THE SEASONAL DEVELOPMENT OF SCUTELLARIA BAICALENSIS GEORGI IN THE NON-CHERNOZEM ZONE AND ON THE SOUTH COAST OF THE CRIMEA

Scutellaria baicalensis is a valuable medicinal plant and a protected species of the East Asian flora. Therefore, work on its introduction is underway in many regions of Russian Federation. Studying of the influence of meteorological factors on the phenology of the S. baicalensis in regions of Russian Federation with contrasting climatic conditions is important in grounds of climate change. Materials and methods. The object of the study is the population of the S. baicalensis biocollections of All-Russian Scientific Research Institute of Medicinal and Aromatic Plants and Nikitsky Botanical Garden. Meteorological indicators: sum of active temperatures, sum of precipitation. Statistical analysis: Tau-b-Kendall correlation coefficient. Results. The duration of the growing season in each region has little variability, independently of the weather conditions of the year. The interval between the onset of phenological phases in the Crimea was characterized by weaker variability than in the Non-Chernozem zone. A significantly smaller amount of active temperatures was required for the onset of phenological phases In the Non-Chernozem zone compared to the southern coast of Crimea. The difference in the average sum of active temperatures across the regions reached 1694.6°C by the end of the growing season. The amount of precipitation had sharp fluctuations in both regions and in all years of research. Conclusion. Secondary flowering, wide amplitudes of the duration of phenological phases and the growing season as a whole, the sum of active temperatures and precipitation indicate the ecological plasticity of the S. baicalensis and the availability of conditions for its cultivation in both regions

Determining the Amount of Phenylpropanoids in Belowground Organs of Purple Coneflower (Echinacea purpurea (L.) Moench., Asteraceae)

От эхинацеи пурпурной получают виды лекарственного растительного сырья: траву свежую и высушенную, корневища с корнями. В них содержится сумма фенилпропаноидов (ранее «оксикоричные кислоты», «гидроксикоричные кислоты») и их производные, обеспечивающие иммуностимулирующий эффект препаратов, основным из которых является настойка. Накопление суммы фенилпропаноидов в корневищах с корнями эхинацеи наименее изучено. Цель – изучение влияния сроков и кратности удаления надземной части на содержание суммы фенилпропаноидов в корневищах с корнями эхинацеи, полученных от растений разных возрастов при культивировании, а также определение содержания изучаемых веществ в настойке при разной степени измельчения сырья. Исследованы корневища с корнями эхинацеи пурпурной, заготовленные в Москве в 2008–2010 гг. в фазу окончания вегетации растений 2-го, 3-го, 4-го, 5-го, 7-го гг. развития. Побеги скашивали в фазы стеблевания (однократно и многократно в течение вегетации), бутонизации, цветения. Контроль – получение сырья без удаления надземной части. В 2008–2009 гг. наибольшее накопление суммы фенилпропаноидов в подземных органах наблюдали при многократном и однократном скашивании побегов в период стеблевания, независимо от возраста растений. Удаление побегов в фазах бутонизации и цветения привело к значительному снижению содержания суммы фенилпропаноидов. В июле-августе 2010 г. в регионе была засуха. Наименьшее содержание изучаемых веществ в сырье отмечено при многократном удалении побегов. В лучшем положении оказалось сырье растений, у которых надземную массу срезали однократно в фазу стеблевания. При сравнении растений разных возрастов установлено, что в сырье растений 2–4 гг. вегетации накопление веществ, независимо от срока удаления надземной части и года проведения опыта, достоверно выше, чем в сырье от растений старших возрастов. Рекомендовано дополнить «Агрорекомендацию по возделыванию эхинацеи пурпурной» при выращивании для получения корневищ с корнями агроприемом многократного скашивания надземной части в фенологической фазе стеблевания. Влияние размера частиц измельченного сырья (от 0,25 мм до 1,0 мм) на содержание биологически активных веществ в настойке не наблюдалосьEchinacea purpurea (L.) Moench plants serve as a source of medicinal raw materials: fresh and dried aboveground parts and rhizomes with roots (Rhizomata cum radicibus). They contain total phenylpropanoids (formerly “oxycinnamic acids”, “hydroxycinnamic acids”) and their derivatives, which underlie the immunostimulatory effect of the preparations. Tincture is the most common preparation. Accumulation of total phenylpropanoid derivatives in Echinacea rhizomes with roots is the least studied aspect. The purpose of the present work is to study the effect of the timing and frequency of removal of the aboveground part on total phenylpropanoids in Echinacea rhizomes with roots collected from cultivated plants of different ages. Another aim was to determine total phenylpropanoids in the tincture prepared from raw material ground to various degrees. Echinacea purpurea rhizomes with roots harvested in Moscow in 2008–2010, at the end of the growing period of plants aged 2, 3, 4, 5, and 7 years, were studied. The shoots were cut down during the stem formation (by single and repeated mowing during the growing period), budding, and flowering stages. The intact raw material was used to provide control samples. In 2008–2009, the highest accumulation of phenylpropanoid derivatives in rhizomes with roots was observed in groups with both repeated and single shoot removals performed during the shoot development stage at all plant ages. The shoot removals during the budding and flowering stages resulted in a significant reduction in phenylpropanoids. During the regional drought in July and August 2010, the raw material samples in the group with repeated shoot removals demonstrated the lowest accumulation of phenylpropanoids. The samples in the group with single shoot removal during the shoot development stage showed greater phenylpropanoid accumulation compared with the repeated mowing group. The content of phenylpropanoids in raw material from 2–4-year-old plants, regardless of the period of shoot removal and the year of the experiment, was significantly higher than in the raw material from older plants. It is recommended to supplement the “Agro-recommendation for the cultivation of Echinacea purpurea” with the agricultural method of repeated mowing of the aboveground part in the phenological phase of shoot development when the plant is grown as a source of rhizomes with roots. No effect of the particle size of the ground raw material (from 0.25 to 1.0 mm) on total phenylpropanoids in the tincture has been reveale

Physiological and biochemical characteristics of Populus tremula leaves in anthropogenic disturbed habitats

The main morphological, anatomical, physiological and biochemical characteristics of Populus tremula undergrowth leaves as resistance indicators under conditions of coal pit waste dump are considered. There has been established high variability of morphological parameters and chemical elements composition and anatomical structure peculiarities. There are reported the differences in the content of photosynthetic pigments and phenol compounds