N. I. Boiko1,2, O. V. Parkina1, V. V. Piskarev2
1Novosibirsk State Agrarian University, ul. Dobrolyubova, 160, Novosibirsk, 630039, Russian Federation
2Siberian Research Institute of Plant Growing and Breeding – the branch of the “Federal Research Center the Institution of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences”, ul. S-100, zd. 21, a/ya 375, pos. Krasnoobsk, Novosibirskii r-n, Novosibirskaya obl., 630501, Russian Federation
Abstract. The purpose of the research was to study the features of the formation of grain mass per ear of collection samples of common spring wheat under contrasting weather conditions of the forest-steppe of the Cis-Ob’ region and to identify the sources of this trait for further use in the breeding process. The work was conducted in 2011–2013 in the Novosibirsk region. In 2011, HTC was equal to 1.22; in 2012, it was 0.59; in 2013, it was 2.86. The research material was 139 collection samples of common spring wheat of different ripeness groups. Early (E) and mid-early (ME) ripeness groups included 31 samples; mid-ripening (MR) group included 94 samples; mid-late (ML) group included 14 samples. The characteristics of the varieties were compared with the average values in each ripeness group. For the genotypes of the early and mid-early ripeness groups, the share of the influence of the year conditions on varying the grain weight per ear was 76.6%; for the mid-ripening group, it was 76.4%; for the mid-late group, it was 71.9%. The varieties Omskaya 24 (1.14 g), Omskaya Kormovaya (1.11 g), Baganskaya 51 (1.08 g), Yugo-Vostochnaya 4 (1.01 g), Prokhorovka (1.00 g), and Rosinka 1 (0.95 g) were used as sources for improving this trait. The coefficient of variation of grain weight per ear varied from weak (Leningradskaya 95 – 4.5%) to strong (Tuleevskaya – 20.6%) varieties. The value of this indicator was reliably and positively correlated with a weight of 1000 grains (for E and ME groups, r was 0.28–0.47; for MR group, r was 0.42–0.58; for ML group, r was 0.49–0.59), the number of grains per ear (r was 0.71–0.87, 0.76–0.81, and 0.78–0.92, respectively), the number of grains per spikelet (r was 0.47–0.70, 0.58–0.65, and 0.52–0.56, respectively), and the weight of grain per plant (r was 0.30–0.81, 0.50–0.71, and 0.57–0.68, respectively).
Keywords: spring common wheat (Triticum aestivum L.); variety sample; ear grain weight; ripeness group; correlation coefficient; variation coefficient; variance analysis.
Author Details: N. I. Boiko, post graduate student, junior research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); O. V. Parkina, Cand. Sc. (Agr.), assoc. prof.; V. V. Piskarev, Cand. Sc. (Agr.), head of laboratory.
For citation: Boiko N. I., Parkina O. V., Piskarev V. V. Formation of Grain Weight per Ear in Varieties of Common Spring Wheat (Triticum aestivum L.) under Contrasting Weather Conditions of the Forest-Steppe Area of the Cis-Ob’ Region. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 12. Pp. 43–47 (in Russ.). DOI: 10.24411/0235-2451-2019-11208.