L.G. Pinchuk, E.V. Gribovskaya, T.S. Melekhina
Kemerovo State Agricultural Institute, ul. Markovtseva, 5, Kemerovo, 650056, Russian Federation
Abstract. In 2010-2013 in the northern forest-steppe of the foothills of the south-east part of Western Siberia (Kuznetsk forest-steppe) the studies were carried out to assess adaptive reactions (ecological plasticity and stability) of winter wheat according to productivity, its structure, mass fraction of protein and gluten in grain depending on sowing time and seeding rates. The soil of the experimental plot was leached chernozem, medium thick, medium humic, heavy loamy. The three-factor experiment included four varieties of soft winter wheat (Omskaya 4 – the standard, Omskaya Ozimaya, Novosibirskaya 40, Novosibirskaya 51), three sowing times (early – the second decade of August, middle – the third decade of August, late – the first decade of September), three seeding rates (5.5, 6.0 and 6.5 million viable seeds per hectare). Ecological plasticity (bi) and stability (S2di) were evaluated by the method of S.A. Eberhart and W.A. Rusell (1966) in the interpretation of V.A. Zykin. Varieties Omskaya 4, Novosibirskaya 40, Novosibirskaya 51 showed good plasticity in terms of yield (bi = 1.06, 1.01 and 1.02 respectively), plant density before harvesting (bi = 1.19, 1.04 and 1.04 respectively), and the number of grains per ear (bi = 1.12, 1.06 and 1.00 respectively), as well as they revealed high stability on these signs (S2di = 0.08, 0.03 and 0.08 respectively). The lower level of stability of these yield structure indices was performed by Omskaya Ozimaya variety. Increased plasticity on protein mass fraction was registered in Novosibirskaya 40 variety (bi = 1.24); of gluten mass fraction – in Omskaya Ozimaya and Novosibirskaya 40 (bi = 1.21 and 1.22 respectively). The greatest stability of the protein mass fraction was revealed in Omskaya Ozimaya and Omskaya 4 (S2di = 0.16 and 0.63 respectively), gluten mass fraction – all varieties (S2di = 0.72-1.00).
Keywords: soft winter wheat, variety, yield and its structure, protein mass fraction, gluten mass fraction, sowing time, seeding rate, ecological plasticity, stability.
Author Details: L.G. Pinchuk, D. Sc. (Agr.), professor (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); E.V. Gribovskaya, post graduate student; T.S.Melekhina, Cand. Sc. (Agr.), methodist.
For citation: Pinchuk L.G., Gribovskaya E.V., Melekhina T.S. Adaptability of Winter Wheat Varieties according to Productivity and Grain Quality Depending on Sowing Time and Seeding Rate in the Kuznetsk Forest-Steppe. Dostizheniya nauki i tekhniki APK. 2017. V. 31. No. 4. Pp. 43-46 (in Russ.).