Results of study of long-fiber flax’s collection material by the parameters of economically valuable traits

The research was carried out in 2017-2019 in the conditions of the Smolensk region on sod-podzolic medium loamy slightly acidic soil. The study included 25 varieties and lines of fiber flax of domestic and foreign selection. The mid-ripening variety Impuls (Russia) was used as a standard, whose yield, depending on the test year, was 1.07...1.29 t/ha. As shown by the calculations of the index of environmental conditions, the most favorable conditions for fiber flax developed in 2018 (Ij = +0.46), and stress conditions, caused by excessive moisture during the critical period of plant growth and development (GTC = 1.7), in 2017 (Ij = -0.55). On average, over the years of research, the yield of fiber, depending on the genotype, varied in the range of 1.00...1.97 t/ha. The highest yield on average for three years of testing (1.78...1.97 t/ha) and average yield in contrasting conditions were characteristic of the varieties Cesar, Sinel, Dobrinya (Russia), Marylin (Holland), Andrea, Altea (France). Under favorable weather conditions (2018), a high potential for the yield of flax fiber compared to the average value (121.5...133.3 %) was obtained in the varieties Cesar, Dobrinya, Sinel (Russia), Belita (Belarus), Andrea, Altea (France), Marylin (Holland). Under stressful conditions (2017), high adaptability was found in the samples of the Russian selection Cesar (173.4 %), Sinel (168.0 %), Dobrinya (151.1 %), Tost 3 (128.7 %), Alfa, Universal (127.7 %). The varieties Surskiy (bi = 2.2), Belita (Belarus), l. 323-02 (Russia), Marylin (Holland) − 1.7, Alexandrit (Russia), Andrea (France) – 1.5. Were characterized by high responsiveness to cultivation conditions (bi> 1). Russian varieties with a relatively stable yield: Cesar, Sinel – 0.7, Alpha – 0.6, Lider, Smolich, Tost 3, Universal – 0.5, Impuls – 0,2 did not show reaction to changes in growing conditions (bi <1). Thus, the domestic varieties Cesar, Dobrinya and Sinel have the highest yield of flax fiber and adaptability to the soil and climatic conditions of the Central Non–Black Earth Region. Expansion of fiber flax acreage under these varieties will provide strengthening of the domestic raw material base.

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Screening of flax gene pool samples by fiber yield and their adaptability to the conditions of the Central Non-Black Earth Region

Трабурова

Rozhmina

Андреева

2020

Аграрная наука Евро-Северо-Востока

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Variability of fiber content in the stems of different varieties of fiber flax

Rozhmina,

Yanyshina

2023

Аграрная наука Евро-Северо-Востока

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The analysis of experimental data on the evaluation of seed lots of fiber flax of domestic varieties for genetic uniformity by the method of soil control according to the trait "fiber content in the stem" for the period from 1953 to 2022 was carried out. Seed material for evaluation was obtained from breeding and seed-growing institutions in Russia, Belarus, Ukraine, Lithuania, Latvia and Estonia. The purpose of the research was to assess the level of variability of the trait "fiber content in the stems" of fiber flax and the effectiveness of domestic breeding in this direction for 70 years. Using the Svetoch variety as an example, it was shown that the differences between seed lots (from 4 to 11 lots of various scientific institutions were estimated annually) based on the results of 13 years of testing ranged from 0.4 to 2.5 abs. percent within one year, the coefficient of variation was from 0.52 to 3.14 %, which indicated the high stability of this trait. At the same time, the value of the trait in this variety, depending on the growing conditions for the period from 1953 to 1972 ranged from 27.9 to 35.4 %, the coefficient of variation on average over 20 years was 6.8 %, the average value of the trait was 31.7 %. In variety Tomsky 18, for the period of testing from 1993 to 2022, the value of the trait was in the range from 25.5 to 35.0 % (Cv = 8.4 %). The biological potential of modern varieties of fiber flax – Krom, A-29, Diplomat, Cesar, Visit and Tomsky 17 made it possible to obtain a fiber content in the stem in some years at the level of 38.1...39.8 %, with an average value of the trait – 32.8…35.2 % (Cv = 9.6…14.9 %). The highest and most stable fiber content in the stem of 36 studied modern domestic varieties of fiber flax was found in Sursky variety, in which the value of the trait on average over the years of testing was 34.5 %, the coefficient of variation was 6.4 %, which indicated a high level of adaptability.

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Results of study of long-fiber flax’s collection material by the parameters of economically valuable traits

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Screening of flax gene pool samples by fiber yield and their adaptability to the conditions of the Central Non-Black Earth Region

Screening of flax gene pool samples by fiber yield and their adaptability to the conditions of the Central Non-Black Earth Region

Variability of fiber content in the stems of different varieties of fiber flax

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