2 research outputs found
Analysis of the selective value of promising Melissa officinalis L. subsp. altissima (Smith.) Arcang variety
The aim of this research was to study a promising MD 1–17 Melissa officinalis L.
subsp. altissima (Smith.) Arcang. variety sample obtained in the collection of the gene pool of
the Research Institute of Agriculture of Crimea (RIAC) in comparison with Krymchanka
(selected in the RIAC) and Lada (selected in the All-Russian research Institute of medicinal and
aromatic plants(VILAR) varieties of lemon balm M. officinalis L. subsp. officinalis. In 2017–
2019, in the Department of Essential Oil and Medicinal Plants of the RIAC,a competitive variety
trial of lemon balm varieties was conducted in accordance with the methodological
recommendations for the selection of essential-oil plants. A territory where this study was
conducted belongs to one of the five agroclimatic regions – the upper piedmont, warm, not
enough humid; to the northern subarea with moderately mild winters. Weather conditions during
the years of competitive variety trial varied significantlya fact that allowed assessing the
adaptability of studied variety samples and forecasting the nature of productivity potential
realization in different growing conditions. As a result, it was found that MD 1–17 variety sample
significantly exceeds other varieties in terms of yield of fresh raw materials, on average, by 62.2
and 77.4%, and in yield of air-dried raw materials, on average, by 32.2 and 52.2%, respectively.
In terms of obtaining essential oil from air-dried raw materials, this variety sample exceeds the
best in this parameter Crimean variety Krymchanka by 56.3%. Basic components of its essential
oil are caryophyllene (25.3–35.9%) and germacrene D (17.7–31.2%) with almost complete
absence or insignificant amount of citral (0.1–7.3%); the proportion of latter in essential oils of
Krymchanka and Lada varieties can reach 36.6% or more. Novelty of this study includes the
creation of the first variety of a new promising essential oil plant –M. altissima. Raw materials
of this variety and products of its processing may be of interest for different ways of use, including
the perfumery and cosmetics industry, for food purposes as a component of tea compositions, etc
Comparative anatomical and morphological characteristics of two subspecies of Melissa officinalis L. (Lamiaceae)
Received: February 23rd, 2022 ; Accepted: May 22nd, 2022 ; Published: July 30th, 2022 ; Correspondence: [email protected] aim of the research is to comprehensively compare the anatomical and morphological
structures of plants of Melissa officinalis subsp. officinalis (‘Krymchanka’ and ‘Lada’ varieties)
and of M. officinalis subsp. аltissima (Sm.) Arcang. These plants have pronounced differences in
morphological features and production indexes. They are grown in the collection of aromatic
plants of the Research Institute of Agriculture of the Crimea (Krymskaya Roza village,
Belogorsky district of Crimea). These studies will allow us to supplement the botanical
characteristics of both subspecies of M. officinalis, and also to evaluate their plasticity and
possibilities of adaptation to growing conditions. For examination we collected plants in the
flowering phase. Anatomical study was carried out using a fixed (alcohol: glycerin : water in a
ratio of 1: 1: 1) and native preparation. A complex of mesomorphic and xeromorphic characters
is established, that confirms the high plasticity and determines the adaptive capabilities of the
species when introduced into various soil and climatic conditions. A variety of epidermal
structures was revealed, which are represented by single and multicellular non-glandular
trichomes and various types of glandular structures. Among them, trichomes with a multicellular
pedicle and a unicellular head, which we found only in M. officinalis subsp. officinalis