N.I. Boiko1,2, V.V. Piskarev2, O.V. Parkina1
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 was to study the formation peculiarities of the stem length of collection samples of soft spring wheat (Triticum aestivum L.) under contrasting weather conditions of the forest-steppe of the Ob region and to select the sources of this sign for the further use in the breeding process. The experiments were carried out in 2011–2013. We used 139 variety samples of different terms of maturation as a material for the investigation. Sowing was carried out at the optimal time, accepted in the zone, manually, in two replications. Bare fallow was a forecrop. In 2011 the value of HTC (1.22) was close to the mean annual value (1.20); in 2012 it was a severe drought and increased temperatures (HTC = 0.59); in 2013 it was excessive moisture and a deficient of heat (HTC = 2.86). The average stem length varies according to the ripeness groups from 64.1 cm (early and middle-early groups) to 71.2 cm (middle-late group). Kazakhstanskaya 15 (mid-season group) and Sibirskaya 16 (middle-late group) significantly exceeded the average value of this index in 2011 and 2013 by 11.7 and 16.9, 10.1 and 9.7 cm, respectively. The studied samples had a significant coefficient of variation in the length of the stem, which was 21–30% for the genotypes from the early and middle-early groups, 26–34% in the mid-season group and 22–30% in the middle-late group. Significant positive correlations over three years were observed between stem length and yield (r = 0.41–0.62, r = 0.36–0.58, r = 0.32–0.45 for the samples from the early and middle-early, mid-season, and middle-late groups), stem length and 1000 grain weight (r = 0.35–0.45, r = 0.46–0.34, r = 0.44–0.60, respectively). The following varieties became sources of valuable for breeding signs: Obskaya 14, Aktyube 9, Altajskaya 65, Iren, Cheremshanka (early and middle-early groups); Baganskaya 51, Ishimskaya 92, Kazakhstanskaya 15, Kazakhstanskaya 32, Milturum 7526, Novosibirskaya 67, Omskaya 20, Omskaya Kormovaya, Saratovskaya 68, Shortandinskaya 125, Lutescens 25 (mid-season group); Omskaya 28, Sibirskaya 16, Shortandinskaya 95, Ishimskaya 98 (middle-late group).
Keywords: stem length; collection sample; spring soft wheat; ripeness group; correlation coefficient; coefficient of variation.
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.); V.V. Piskarev, Cand. Sc. (Agr.), head of laboratory; O.V. Parkina, Cand. Sc. (Agr.), assoc. prof.
For citation: Boiko N.I., Piskarev V.V., Parkina O.V. Investigation of Formation Peculiarities of Stem Length in Varieties of Soft Spring Wheat (Triticum aestivum L.) under Contrast Weather Conditions of the Forest-Steppe of the Ob Region. Dostizheniya nauki i tekhniki APK. 2017. Vol. 31. No. 11. Pp. 35-38 (in Russ.).