Adaptive reaction of barley varieties during environmental testing in the Udmurt Republic

The article presents the results of screening of 20 varieties of fiber flax (Linum usitatissimum L.) according to the yield of flax fiber and adaptability parameters in the conditions of the Northwestern region. The variety Dobrynya (Russia) zoned in the region was taken as standard. On average, over the years of research (2015-2017), the yield of flax fiber in varie-ty numbers varied in the range of 1.22-2.67 t/ha. According to the calculations of the environmental conditions index, the most favorable conditions for growth and development of fiber flax varieties were in 2016-2017 (Ij = +0.07-0.73), the worst in 2015 (Ij = -0.79). The highest yield of fiber (t/ha) was observed in varieties Y 51269 (2.67) (China), A-236 (2.66), Dobrynya (2.49), M-249 (2.48) and L 280-02 (2.38) (Russia), Glazur (2.48) (Ukraine), which exceeded the average among the varieties by 9.7-2.3 %. Among them, the varieties Y 51269 (China) and A-236 (Russia) exceeded the standard by 0.17-0.18 t/ha, in two years of three the growth was reliable. The studied varieties did not fully realize their relatively high yield potential and were characterized by a strong degree of variability. The best indicators of stress resistance (0.79-1.16) were observed in Vesnichka, L-2 (Russia), B-226 (Lithuania), Tyy (China) the varieties and lines Dobrynya, M-249, A-236, L-6, L-4, L-5, L 280-02 (Russia), Glazur, Vruchiy (2.34-2.32) (Ukraine) and Tyy (2.33) (China) were genetically flexible genotypes (2.56-2.23). Samples B-226 (Lithuania), Glazur (Ukraina), L-2-1, Vesnichka, and L 280-02 (Russia) had high homeostatic values and low coefficient of variation. Highly responsive to environmental conditions were samples L-5, L-3, L-4, A-236, M-249, Dobrynya, (Russia), Sxy20, Sxy, Y 51269 (China), Vruchiy (Ukraine); plastic ˗- varieties Glazur (Ukraine), L 280-02, L-5-1, 85-58-26-20 (Russia); weakly responsive − Lu-1, Tyy (China), L-2-1, L-205, Vesnichka (Russia), B-226 (Lithuania). According to the yield of flax fiber and the complex of adaptability parameters, the cultivars B-226 (Lithuania), Y 51269 , Tyy, Lu 1 (China), L 280-02, L-6, A-236, Dobrynya (Russia), Vruchiy and Glazur (Ukraine) were distinguished. They had high stress resistance, genetic flexibility, plasticity and stability. They can be used as sources of adaptability when creating new varieties of fiber flax.

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New spring barley variety Tolkan of fodder-grain use

Pakul

Мартынова

2020

Аграрная наука Евро-Северо-Востока

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The aim of the research is to make a comprehensive assessment of the new spring barley variety Tolkan of fodder grain use according to the economically valuable traits. Studies were carried out in 2016-2019. By the method of intraspecific hybridization of geographically distant forms and direction individual selection from the hybrid population of Pamos x Bankuti Korai, the new spring barley variety Tolkan has been developed. The variety is highly productive, of mid-ripening type, the growing season is 85 days, the average yield over the years of research was 5.4 t/ha, which exceeds the Biom standard variety by 0.8 t/ha (LSD05 = 0.15), the maximum yield is 7.7 t/ha. The main element of productivity is the mass of grain per head 0.97 g, which has a close reliable relationship with the yield, r = 0.96 (reliability threshold at the level of 5 %, R = 0.88), the variety is mostly adapted to environmental conditions, Cv = 30.2 % (Biom standard variety − 36.7 %). It is characterized by large grain, the average absolute grain mass forthe years of research is 51.0 g, maximum - 63.0 g, by high resistance to lodging at a plant height of 57 to 94 cm, by immunity to loose smut and barley smut (absence of damage on an infectious background). When studying the variety in the production test of 2018-2019 according to the bare fallow predecessor, the yield for the first sowing period (May 7-11) was 4.14 t/ha, for the Biom standard variety − 3.27 t/ha (LSD05 = 0.46), forthe second period (May 13-19) − 3.64 t/ha, for the standard variety − 2.4 t/ha (LSD05 = 0.39 t/ha). On the basis of the comprehensive assessment Tolkan spring barley variety was transferred to the state test in 2019.

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Adaptive reaction of barley varieties during environmental testing in the Udmurt Republic

Cited by 7 publications

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Influence of agrometeorological climate changes on grain productivity of spring barley in the Non‐chernozem zone of the Russian Federation

Influence of agrometeorological climate changes on grain productivity of spring barley in the Non‐chernozem zone of the Russian Federation

Screening of fiber flax varieties from the VIR collection according to flax fiber yield and adaptability parameters in the conditions of the Nortwestern region

New spring barley variety Tolkan of fodder-grain use

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