Effect of soil and growth climatic conditions on vitamin content of red clover (Trifolium pratense L.)

© 2020, Editorial board of Journal of Experimental Biology and Agricultural Sciences. All rights reserved. The current study was conducted to estimate the effect of soil and growth climatic conditions on the vitamin content of red clover (Trifolium pratense L.). Further, in vitamins, the content of ascorbic acid and vitamin A (provitamin – carotene) was estimated from the aerial parts of the clover. Ascorbic acid is a powerful antioxidant, antiviral, and antitumor vitamin while vitamin A is a useful vitamin for eyesight. Ascorbic acid content in the red clover tissues was determining potassium hexacyanoferrate method while Provitamin A and total carotenoid was estimated by spectrophotometric method. Results of the study revealed that the highest content of vitamins C was found in the plant grown under the climatic conditions of the southern taiga subzone of the Atninsky and in the zone of deciduous forests (Apastovsky and Kamsko-Ustinsky districts) while the plant is grown under the coniferous-deciduous forests (Zelenodolsky district) climatic conditions are a rich source of vitamin A. From the results of the study, it can conclude the soil and growing conditions especially temperature regime and soil moisture affected the level of vitamins in red clover

Stevioside Has the Maximum Biological Activity among Natural Stevia Diterpenes

© 2020, Pleiades Publishing, Ltd. Abstract: The concentrations of steviol and its derivatives stimulating the growth of wheat plants were measured: 10–8 for stevioside and 10–9 М for steviol and isosteviol. It was found that stevioside increased the activity of amylolytic enzymes and protein content, as well as frost tolerance of the roots of wheat seedlings. Thus, stevioside can be recommended for the development of complex phytopreparations for stimulating the growth processes and increasing the resistance of wheat plants to low temperatures

Changes in Hormonal Status and Expression of Lectin Genes in Wheat Seedlings Treated with Stevioside and Exposed to Low Above-Zero Temperatures

© 2020, Pleiades Publishing, Ltd. Abstract: Effect of presowing treatment with stevioside (10–8 M) on activity, content, and expression of the wheat-germ agglutinin (WGA) gene, as well as the content of phytohormones, was studied in 4-day-old seedlings of wheat (Triticum aestivum L.) exposed to low above-zero temperatures. Pretreatment with stevioside considerably increased the protective potential of plants in response to low-temperature stress. The obtained results point to an ABA-dependent effect of stevioside on WGA in spite of the gibberellin-like chemical structure of the examined growth regulator