L. A. Popova, L. N. Golovina, A. A. Shamanin
N. Laverov Federal Center for Integrated Arctic Research, Ural Branch, Russian Academy of Sciences, Naberezhnaya Severnoi Dviny, 17, Arkhangel’sk, 163000, Russian Federation
Abstract. The purpose of the study was to identify high-yielding hybrids with high ecological plasticity, stability, and adaptability to breed new varieties of potato suitable for cultivation in the northern regions of Russia. The work was performed in 2018–2020 in the Arkhangelsk region. The soil of the plot was cultivated to a medium degree; it was sod-podzolic and sandy loam. The forecrop was annual grasses. The objects of the study were eight mid-early ripening hybrid potato samples bred in the Lorkh All-Russian Scientific Research Institute of Potato Breeding, and the standard variety was Elizaveta. Meteorological conditions during the years of the study varied significantly in terms of temperature and humidity. They were more favourable in 2018 when the average yield was 27.6 t/ha; the environment index (Ij) was 2.1; in 2020 the environment index was negative (-2.7); the average harvest of tubers decreased to 22.8 t/ha. The best variety patterns were 4568/10 with the average yield of 38.0 t/ha, 4602/9 with the average yield of 30.5 t/ha, and 1509/1 with the average yield of 30.1 t/ha, which was higher by 9.5 t/ha, 2.0 t/ha, and 1.6 t/ha than that of the standard variety Elizaveta. They were plastic (bi was 2.61, 1.54, and 3.00, respectively), but not stable (Si2 was 184.5, 135.6, and 270.2) in terms of yield. Variety samples 4568/8 (bi – 0.73; Si2 – 15.7) and 2804/3 (bi – 0.92; Si2 – 65.6) were characterized by low plasticity, but they less react to changes in environmental conditions. Variety samples 4568/10, 4602/9, and 1509/1 were the most adaptive to the conditions of the region (Ka was 1.49, 1.19, and 1.18, respectively). Prospective variety sample 4568/10 is planned to be transferred to the State Variety Testing.
Keywords: potato (Solanum tuberosum); variety pattern; yield; ecological plasticity; stability; adaptability; hydrothermal coefficient.
Author Details: L. A. Popova, Cand. Sc. (Econ.), senior research fellow (е-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.); L. N. Golovina, senior research fellow; A. A. Shamanin research fellow.
For citation: Popova LA, Golovina LN, Shamanin AA. [Ecological plasticity and stability of potato varieties under conditions of the Arkhangelsk region]. Dostizheniya nauki i tekhniki APK. 2021;35(4):41-4. Russian. doi: 10.24411/0235-2451-2021-10406.