K. A. Galimov
Ural Agricultural Research Institute – the branch of the Ural Federal Agrarian Scientific Center of the Ural branch of the RAS, ul. Glavnaya, 21, Istok, Ekaterinburg, 620061, Russian Federation
Abstract. Nineteen collection samples of winter rye were tested to optimize and increase the efficiency of breeding work with this culture under conditions of the Middle Urals in 2012–2015. The investigations were carried out on experimental fields of the Ural Research Institute of Agriculture. Seven signs were studied: the height of plants, the number of grains in an ear, the weight of 1000 grains, the weight of grain in an ear, the content of water-soluble arabinoxylans, crude protein, and starch in grain. On the basis of these signs, the factor of phenotypic stability SF and ecological plasticity bi were calculated. The conditions of a year had the greatest influence on the manifestation of all signs; a variety had less effect, for some signs there was an interaction between the conditions of the year and variety genotype. The greatest differences in genotypic variation (CV(gen) = 16.1–25.8%) were characteristic for the weight of 1000 grains, mass of grain in an ear, the content of water-soluble arabinoxylans. For other signs, the range of ecological variation (CV(ecol)) was at the level of the intervarietal variation (CV(gen)). Poorly varied starch content and plant height showed the maximum buffer capacity (SF was 1.05 and 1.10). Strongly varying content of water-soluble arabinoxylans showed a rather low buffer capacity (SF was 1.85). Samples with high phenotypic stability of the studied signs were more valuable for breeding than lines with high ecological plasticity, in which the indicator bi was higher than 1. On the basis of the number of grains in the ear, the variety Population 20 clone 05 was selected, which had high stability and low plasticity, Nika 3 variety was selected by the weight of 1000 grains, the weight of grain from the ear and starch content in grain. In years with adverse weather conditions, environmentally sustainable varieties-populations can provide relatively high adaptability.
Keywords: winter rye (Secale cereale L.); variety; ecological variation; phenotypic stability; plant height; number of grains in the ear; weight of 1000 grains; ear productivity; content of water-soluble arabinoxylans; content of crude protein; content of starch.
Author Details: K. A. Galimov, senior research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Galimov K. A. Evaluation of Adaptability of Collection Samples of Winter Rye. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 3. Pp. 37–41 (in Russ.). DOI: 10.24411/0235-2451-2019-10309.