E. V. Kozhukhova
Krasnoyarsk Agricultural Research Institute, Federal Research Center “Krasnoyarsk Scientific Center of the SB of the RAS”, prosp. Svobodnyi, 66, Krasnoyarsk, 660041, Russian Federation
Abstract. The studies were carried out in the forest-steppe zone of the Krasnoyarsk Krai in 2016–2018. The purpose was to determine the productivity parameters of semi-dwarf breeding lines of pea. The soil in the experimental field was ordinary heavy loamy chernozem with a medium provision with mobile phosphorus and high provision with mobile potassium (according to Chirikov). The acidity of the soil solution (pH) was 6.8. Excessive moistening was noted in 2016 and 2017 (hydrothermal coefficient was 1.4 and 1.5, respectively). The conditions in 2018 were close to optimal (hydrothermal coefficient was 1.0). The studies were carried out according to the method of state competitive variety trials. Material for the study was 6 lines of semi-dwarf pea. Anushka and Yakhont semi-stemmed varieties were taken as standards. The genotypes of pea of semi-dwarf lines were compared with semi-stemmed standards in percentage correlation. The correlation between the number of seeds per plant and the heat and moisture availability in the interphase flowering-maturation period was average and reliable (r = 0.547 ± 0.192 and r = 0.669 ± 0.171, respectively). In the amount of productive nodes it was found the similar tendency (r = 0.500 ± 0.199 and r = 0.736 ± 0.155, respectively). The most of productive nodes on the plants of semi-dwarf lines formed in the year with excessive moisture availability during the flowering period. The genotypes under study showed the highest yield in the flowering period of 2016 with higher moisture availability, in which semi-dwarf lines exceeded semi-stemmed standards by 0.34 t/ha. In July 2016 the amount of precipitation exceeded the norm by 81.4 mm. The number of productive nodes, in that case, amounted to 3.2 pieces. Under the conditions of rainfall shortage in July 2017 and 2018 (by 5 and 38 mm respectively) it decreased to 2.05 and 2.25 pcs. The semi-stemmed varieties exceeded the semi-dwarf samples in the number of productive nodes per plant by 2.2–22.8%.
Keywords: pea (Pisum sativum L.); breeding; semi-dwarf lines; productivity parameters; productive nodes; bean number; seed number.
Author Details: E. V. Kozhukhova, Cand. Sc. (Agr.), research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Kozhukhova E. V. Productivity Parameters of Semi-Dwarf Lines of Pea. Dostizheniya nauki i tekhniki APK. 2019. Vol. 33. No. 7. Pp. 17–20 (in Russ.). DOI: 10.24411/0235-2451-2019-10704.