Survival and Winter Hardiness of Genotypes of Origanum Vulgare L. In the Northern Forest-Steppe Conditions of the Tyumen Region

Abstract

The aim of the research is to study the collections of oregano for winter hardiness in the conditions of the Northern forest-steppe of the Tyumen region in order to select the best genotypes. The material for the study was 23 specimens of oregano, collection selections were taken from the collection of the All-Russian Institute of Plant Genetic Resources named after N.I. Vavilov, as well as from different regions. N.I. Vavilov, as well as from different regions of the Tyumen region. The experiment was planted in 2017 using the seedling method. Field studies were conducted in 2017-2019 in the experimental field of the Research Institute of Agriculture of the Northern Trans-Ural - Branch of the Federal Research Center Tyumen Scientific Center of the Siberian Branch of RAS (Moskovsky settlement, Tyumen district), which is located in the northern forest-steppe. The soil is dark grey forest, heavy loam. The reaction of the soil solution in the salt extract is 5.5...6.8 (GOST 26483-85). Soil humus content (on absolutely dry matter) was 1,50...4,75 % (GOST 26213-91), P2O5 was 7,6...18,0 mg/100 g of soil; K2O was 8,0...25,7 mg/100 g of soil (GOST 26204-91). Observations and records were conducted according to the methodology of the State Crop Variety Test. Meteorological conditions in 2017-2019 varied considerably from the mean annual values. As a result of the analysis of the presented 23 genotypes winter hardiness of oregano in the first year of life is 68...100 %, and in the second year of life 94...97 %. Genotype T-3 has high winter hardiness, while its losses during wintering were recorded only in the second year of life at 3%. The greatest number of rooted plants was recorded for genotypes K-1 (94 %), M-2 (93 %), K-2 (93 %), which was 8...9 % higher than the standard variety. The high level of plant survival was established in genotypes before wintering in the second year of life and in the spring of the third year of life and amounted to 94...97 %

GROWTH AND SURVIVAL OF THYME (Thymus L.) VARIETIES UNDER THE CONDITIONS OF THE NORTHERN TRANS-URALS

“…Кроме того, его используют при оформлении газонов, альпийских горок, рокариев, сухих ручьев в качестве декоративного растения [11]. В связи с широким использованием культуры в различных отраслях промышленности необходимо выявить способность растений противостоять неблагоприятным условиям зимнего и ранневесеннего периода [12,13,14].…”