Page 162 - Zbornik_Konf_2019

https://doi.org/10.15414/2019.9788055220703

4 International Scientific Conference Abstracts Book
th
IMPACT OF PLANTS SECONDARY METABOLITES ON CABBAGE PRODUCTIVITY

Alla Borovskaia , Natalia Mascenco , RaisaIvanova , Lidia Shpak
1

1
2
1
1 Institute of Genetics, Physiology and Plant Protection, Chisinau, Republic of Moldova;
E-mail.: allaborovskaia@gmail.com
2 Transnistrian Research Institute of Agriculture, Tiraspol, Republic of Moldova

Improving the sustainability of vegetable crops to adverse growing conditions is a
significant reserve for increasing yields with the already achieved level of intensification of
their production. The implementation of resource-saving and especially environmentally safe
technologies for the production of vegetables brings to the fore the use of biologically active
substances (BASs) of natural origin as growth regulators. It is BASs with their exogenous use
that can in low concentrations influence the intensity of the physiological processes in the
plants, especially under unfavorable conditions for their growth.
The purpose of this study was to use a complex of biologically active substances isolated
from some representatives of the wild flora of Republic of Moldova (family of Plantaginaceae
Juss.) as growth regulators and to establish their effect on seed viability, yield and biochemical
composition of white cabbage (Brassica oleracea L., Brassicaceae Burnett family).
Plants of Linaria vulgaris Mill., Verbascum densiflorum Bertol., Linaria genistifolia L.,
Veronica officinalis L. were collected during the flowering stage, in the period of maximum
accumulation of biologically active compounds. From the aerial part of these plants by
exhaustive extraction with aqueous ethanol followed by purification of extracts through the
adsorption-distribution chromatography on columns with a sorbent, there were obtained the
various complexes of BASs. The isolated complex fractions were characterized using methods
of spectral and chromatographic analysis and tested in laboratory conditions for their
biological activity by pre-sowing soaking the seeds of white cabbage with low germination
(62.4 %). The certified natural growth regulator Ecostim, contained the tomatoside, the
steroid glycoside of furostanol series, was used as a reference preparation.
In field condition, the cabbage seeds were soaked in 0.01 % aqueous solutions of bio-
regulators, which showed the greatest positive germination effect during laboratory testing.
The use of the preparation Ecostim and the complex of bio-regulators from Veronica officinalis
for pre-sowing seed soaking created the most favorable conditions for the growth and
development of white cabbage, significantly increasing the seed germination, stimulating the
processes of root formation of seedlings and its survival.
The ability of these bio-regulators to improve the production process of white cabbage
was established. Seed treatment with the solutions of Ecostim and complex of bio-regulators
from Veronica officinalis contributed to an additional 11.1 tons and 6.7 tons of standard
cabbage heads per hectare, respectively. It was shown that the pre-sowing treatment of seeds
also had a positive effect on the biochemical indexes of cabbage, increasing the content of
vitamin C and sugars.
The performed research, its scientific and applied results allowed us to recommend the
pre-sowing seed treatment with solutions of the preparation Ecostim and the complex of bio-
regulators from Veronica officinalis as an element in the technology of cabbage growing.

Keywords: bioregulator, Ecostim, Veronica officinalis L. white cabbage, yield.

|162 4 International Scientific Conference Agrobiodiversity Nutrition, Health and Quality of Human and Bees Life
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September 11–13, 2019