Abstract
Studies on the evaluation of 20 fiber flax accessions of Russian, Chinese, Japanese and Polish breeding from the collection of the Federal Research Center "All-Russian Institute of Plant Genetic Resources named after N. I. Vavilov" (VIR) were conducted in 2018-2020 in order to identify the sources of agronomic valuable characters that are adaptive to the conditions of the North-West of the Russian Federation. The HTC for the growing season in 2018 was 0.95, in 2019 – 1.53 and in 2020-1.1. Abiotic conditions had a greater influence on the formation of plant height (59.6 %), seed yield (60 %) and fiber content in plants (55.1 %), but the influence of the genotype on these indicators was also significant. The effect size of the genotype prevailed in the formation of fiber yield (67.2 %) and the duration of the growing season (52.8 %). The variability of characters was the greatest according to the seed yield (V = 6.7-33.9 %), disease resistance (V = 3.1-26.5 %); the lowest one was noted according to the duration of the growing season (V = 4.4-9.7 %). For the rest characters, it was at the level of up to 20 %. A valuable and plastic source material was identified for practical breeding aimed at creating new varieties with the following characters: early maturity – K-8680 (Russia), K-8782, K-8783 (Japan), which matured 3 days earlier than the Dobrynya standard and had a growing period of 67 days; productivity – K-8651, K-8760, K-8795, K-8797, K-8874, K-8877 (China), which significantly exceeded the fiber yield of the Dobrynya variety (241 g/m2) by 8-14 %. There were identified genotypes significantly exceeding the standard: according to the plant height (82 cm) ‒ K-8681 (Russia), K-8751, K-8794, K-8795, K-8754 (China) ‒ by 12-25 %; yield of flax straw (241 g/m2) – K-8681 (Russia), K-8751, K-8794, K-8795, K-8874, K-8880 (China) – by 25-40 %; seed yield (149 g/m2) ‒ K-8680 (Russia), K-8772 (Poland), K-8782 (Japan) – by 10-23 %; resistance to lodging (9 samples) and diseases (7 samples). Use of the identified gene sources in breeding practice should accelerate the creation of varieties that provide high and stable yields.
Highlights
Авторы благодарят рецензентов за их вклад в экспертную оценку этой работы Конфликт интересов: авторы заявили об отсутствии конфликта интересов
Vavilov" (VIR) were conducted in 2018-2020 in order to identify the sources of agronomic valuable characters that are adaptive to the conditions of the North-West of the Russian Federation
Abiotic conditions had a greater influence on the formation of plant height (59.6 %), seed yield (60 %) and fiber content in plants (55.1 %), but the influence of the genotype on these indicators was significant
Summary
Изучение выборки из коллекции ВИР, состоящей из 20 образцов различного происхождения (4 – Россия, 13 ‒ Китай, 2 ‒ Япония, 1 ‒ Польша), выявило значительное разнообразие по морфологическим, биологическим и хозяйственно ценным признакам (табл. 4). Изучение выборки из коллекции ВИР, состоящей из 20 образцов различного происхождения (4 – Россия, 13 ‒ Китай, 2 ‒ Япония, 1 ‒ Польша), выявило значительное разнообразие по морфологическим, биологическим и хозяйственно ценным признакам Продолжительность вегетационного периода у изучаемых сортообразцов за годы исследований варьировала в пределах 64-81 суток. – 13,1 % при средней длине вегетационного периода соответственно 80, 76 и 67 суток. Внутрисортовое варьирование этого признака было незначительным 4,4-9,7 %, у отдельных образцов он в значительной степени зависел от условий года. Образец К-8794 (Китай) имел вегетационный период в 2018 г. У сортастандарта Добрыня продолжительность вегетационного периода в среднем за годы исследований составила 70 суток (CV = 5,4 %). Методом двухфакторного дисперсионного анализа установлено, что продолжительность вегетационного периода в большей степени зависела от генотипа (52,8 %), но и влияние погодных условий тоже статистически значимо (35,6 %). Таблица 4 ‒ Характеристика коллекционных образцов льна-долгунца по отдельным хозяйственно ценным признакам (2018-2020 гг.) / Table 4 ‒ Characteristics of collection accessions of fiber flax according to individual agronomic valuable characters (2018-2020)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
