E. V. Kozhuhova
Krasnoyarsk Agricultural Research Institute, Federal Research Center “Krasnoyarsk Scientific Center”, Siberian branch, Russian Academy of Sciences, prosp. Svobodnyi, 66, Krasnoyarsk, 660041, Russian Federation
Abstract. The studies were conducted in 2018–2020 in the forest-steppe zone of the Krasnoyarsk Territory. The soil of the experimental site was represented by ordinary heavy loamy chernozem. The forecrop was bare fallow. The purpose of this work was to assess the length variability of different pea plant morphotypes under conditions of Yenisei Siberia, to determine the most stable group of samples, and to identify the main factors affecting the value of this indicator. The study objects were nine samples of sowing pea, three of each morphotype: medium-stemmed laminar, medium-stemmed with the awned leaf type, and short-stemmed with the awned leaf type. The samples from the short-stemmed group (sigma2d=127.7) were more stable in terms of plant length; the medium-stemmed laminar genotypes (sigma2d =149.9) were the least stable in the experiment. The samples from the medium-stemmed laminar group (bi=1.27) were most susceptible to changing environmental conditions in terms of plant length; the short-stemmed genotypes with the awned leaf type were characterized by the weakest response (bi =0.59). The length of the medium-stemmed samples varied more than that of the short-stemmed samples (CV was 33.4% and 28.9%, respectively). Each sample had a different number of internodes, the variability of this sign ranged from insignificant to medium (CV varied from 7.3% to 14.6%). Short-stemmed samples were characterized by the smallest variability of internode length over the years (CV=18.5%); the largest variability was registered among medium-stemmed laminar samples (CV = 25.8%). The plant length depended more strongly on the internode length (r ± Sr = 0.951 ± 0.062); the correlation with the number of internodes throughout the entire sample group was medium (r ± Sr = 0.633 ± 0.155). Therefore, when breeding short-stemmed genotypes, special attention should be paid to the internode length. The correlation between lodging resistance and height of pea plants in the sample group was significant and moderately negative (r ± Sr = -0.545 ± 0.168).
Keywords: pea (Pisum sativum L.); sample; plant length; adaptability; lodging resistance.
Author Details: E. V. Kozhuhova, Cand. Sc. (Agr.), leading research fellow (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Kozhuhova EV. [Variability of pea plant length under conditions of Yenisei Siberia]. Dostizheniya nauki i tekhniki APK. 2021;35(11):15-9. Russian. doi: 10.53859/02352451_2021_35_11_15.