ECOLOGICAL-GEOGRAPHIC APPROACHES TO THE STUDY OF GENETIC DIVERSITY OF BARLEY AND OAT FROM THE VIR COLLECTION

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Abstract


Under conditions of climate change, the assessment of the stability of genotypes is of particular importance. To conduct directed selection of genotypes with a narrow or broad reaction rate, it is necessary to assess their stability already in the early stages of breeding. The aim of the study was to study the stability of breeding significant traits of oat and barley samples in contrasting ecological and geographical conditions. 25 oat samples and 25 barley samples were studied over 3 years under contrasting conditions in St. Petersburg and the Tambov Region. Varieties are characterized by average values of economically valuable traits and genotype regression coefficients on the influence of the bi environment according to Eberhart and Russell. The most sensitive to a change in the ecological and geographical situation were the durations of the germination–heading, germination–harvest periods and grain yield. These characters varied to a greater extent depending on the cultivation conditions than on the genotype. According to regression coefficients for environmental conditions, significant differences in genotypes were only in yield. Contrasting groups of varieties were distinguished by regression coefficients on environmental conditions, genotypes with high productivity. The durations of “germination–heading”, “germination–harvest”, the plant height reacted to the change in the environment the same in different varieties. The duration of the growing season was determined by the sum of effective temperatures above 15 °С. The reduction of the growing season in both crops was 3 days with an increase in the sum of effective temperatures above 15 °С by 100 °С.


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About the authors

Igor G. Loskutov

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Author for correspondence.
Email: i.loskutov@vir.nw.ru
ORCID iD: 0000-0002-9250-7225
SPIN-code: 2715-2082
Scopus Author ID: 8619012600
ResearcherId: D-5238-2013

Russian Federation, St. Petersburg

Doctor of Biological Sciences, Chief Researcher, Acting Head of the Department of Genetic Resources of Oats, Rye, Barley

Lyubov Yu. Novikova

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Email: l.novikova@vir.nw.ru
ORCID iD: 0000-0003-4051-3671

Russian Federation, St. Petersburg

Doctor of Agricultural Science, Leading Researcher, Acting Head of the Department of Automated Information Systems for Plant Genetic Resources

Olga N. Kovaleva

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Email: o.kovaleva@vir.nw.ru
ORCID iD: 0000-0002-3990-6526

Russian Federation, St. Petersburg

Candidate of Biological Science, Leading Researcher, Department of Genetic Resources of Oats, Rye, Barley

Nadezhda N. Ivanova

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Email: n.ivanova@vie.nw.ru
ORCID iD: 0000-0002-4686-1338

Russian Federation, St. Petersburg

Senior Researcher, Department of Genetic Resources of Oats, Rye, Barley

Elena V. Blinova

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Email: e.blinova@vir.nw.ru
ORCID iD: 0000-0002-8898-4926

Russian Federation, St. Petersburg

Candidate of Agricultural Sciences, Senior Researcher, Department of Genetic Resources of Oats, Rye, Barley

Galina. V. Belskaya

Federal Research Center “N.I. Vavilov All-Russian Institute of Plant Genetic Resources”

Email: belskaigalin@yandex.ru
ORCID iD: 0000-0002-8644-3501

Russian Federation, St. Petersburg

Candidate of Agricultural Science, Senior Researcher, Head of the Laboratory of Cereal Crops

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Supplementary files

Supplementary Files Action
1.
Fig. 1. Agrometeorological conditions of ecological and geographical testing of samples

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2.
Fig. 2. Agrobiological indicators of 25 oat samples. The minimum, maximum, median and quartiles are shown: a - “seedlings - heading”; b - “seedlings - ripening”; in - the height of the plant; g is the mass of 1000 grains; d - grain weight from 1 m2

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3.
Fig. 3. Agrobiological indicators of 25 samples of barley. Minimum, maximum, median and quartiles are shown: a - “seedling – earing”; b - “seedlings – ripening”; in - the height of the plant; g is the mass of 1000 grains; d - grain weight from 1 m2

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4.
Fig. 4. Agrometeorological dependences of the durations of the growing periods of oats and barley: a - “seedlings - heading” on the length of the period between the dates of a stable transition of temperatures above 10 and 15 ° C; b - “seedlings - ripening” of the sum of effective temperatures above 15 ° C

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Copyright (c) 2020 Loskutov I.G., Novikova L.Y., Kovaleva O.N., Ivanova N.N., Blinova E.V., Belskaya G.V.

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