COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION

In the vegetation experiment conditions it was established that the greatest effect of soybean bacterization can be obtained by two strains of nodule bacteria with slow (Bradyrhizobium japonicum 46) and intensive (B. japonicum КВ11) growth rates when these strains used in inoculum in the ratio 1 : 1...

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Дата:2016
Автор: Krutylo, D. V.
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Мова:Англійська
Опубліковано: Institute of Agrocultural Microbiology and Agro-industrial Manufacture of NAAS of Ukraine 2016
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Назва журналу:Agriciltural microbiology
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Agriciltural microbiology
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author Krutylo, D. V.
author_facet Krutylo, D. V.
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author_sort Krutylo, D. V.
baseUrl_str https://smic.in.ua/index.php/journal/oai
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datestamp_date 2026-07-22T10:10:42Z
description In the vegetation experiment conditions it was established that the greatest effect of soybean bacterization can be obtained by two strains of nodule bacteria with slow (Bradyrhizobium japonicum 46) and intensive (B. japonicum КВ11) growth rates when these strains used in inoculum in the ratio 1 : 1 (binary composition). In compared to the mono-inoculation the combined use of these strains contributed the formation of balanced symbiotic system, increase the level of molecular nitrogen fixation, content of chlorophyll in the biomass leaves and above ground mass of different soybean plants varieties on 7.8–19.6 %. In a field experiment inoculation of soybean seeds with a composition of B. japonicum strains to increase the soybean yields by 11.1–13.7 % compared to the mono-inoculation.
doi_str_mv 10.35868/1997-3004.24.29-36
first_indexed 2025-07-17T12:23:06Z
format Article
fulltext 29 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. — С. 29–36. ISSN 1997-3004 UDC 635.652.2:631.847.211 COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION D. V. Krutylo Institute of Agricultural Microbiology and Agroindustrial Manufacture, NAAS 97, Shevchenka str., Chernihiv, 14027, Ukraine; e-mail: krutilod@mail.ru In the vegetation experiment conditions it was established that the greatest effect of soybean bacterization can be obtained by two strains of nodule bacteria with slow (Bradyrhizobium japonicum 46) and intensive (B. japonicum КВ11) growth rates when these strains used in inocu- lum in the ratio 1 : 1 (binary composition). In compared to the mono-inoculation the combined use of these strains contributed the formation of balanced symbiotic system, increase the level of mo- lecular nitrogen fixation, content of chlorophyll in the biomass leaves and above ground mass of different soybean plants varieties on 7.8–19.6 %. In a field experiment inoculation of soybean seeds with a composition of B. japonicum strains to increase the soybean yields by 11.1–13.7 % com- pared to the mono-inoculation. Key words: Bradyrhizobium japonicum, binary composition of strains, competitiveness, inocu- lation, yield, soybean. An important reserve to increase producti- vity of legumes is the use of rhizobia, which functions in plant-microbial interaction are di- verse: a molecular nitrogen fixation, improved nutrition of plants, synthesis of biologically ac- tive substances, increase of plant resistance to the action of pathogens and abiotic stresses [1; 2]. It is known that in regions of intensive soy- bean cultivation using biological preparations based on rhizobia, soils form different popula- tion of these microorganisms in terms of den- sity. Local populations are considered as a source of economically valuable strains, on the other hand, they can act as competitors of bio- agents of microbial preparations in soil [2–4]. During the study of populations of soybean microsymbionts in soils of Ukraine, among their representatives we found strains with increased growth rate, which conventionally called “strains of intense growth”. Method of analyti- cal selection gave new highly effective strains of rhizobia from soybean with slow (Brady- rhizobium japonicum 46) and intensive (B. ja- ponicum KB11) growth. It has been established that the strains of intense growth are characte- rized by increased saprophytic competence (survival in soil) compared with slowly growing rhizobia [5]. Property for better survival in soil characteristic for rhizobia with intense growth can be used in practice to develop new micro- bial preparations with a wide range of perfor- mance. It should be noted that the list of biological preparations for the plant production over the past decade have expanded to include prepara- tions based on microorganisms of various func- tional groups and preparations of binary action, obtained as a result of a combination of several microorganisms [6]. Today, it has been experi- mentally proved the significant stimulating ef- fect of the mixed cultures of microorganisms on the growth and development of plants. Com- pared with pure cultures of diazotrophs, consor- tia of microorganisms are characterized by in- creased efficiency and stability of action on plants, which makes the prospects of their use in agricultural practice [7; 8]. The possibility of using biological prepara- tions of several strains of rhizobia belonging to the same species has been poorly studied. For example, A. I. Chunderova et al. [9] in field ex- periments with peas show that multistrain (two to three strains) inoculation of peas gives higher and more stable yields than monostrain. The au- thors made a conclusion about the prospects of multistrain preparations when growing peas. We believe that the use of some highly effi- cient strains of soybean rhizobia with different © D. V. Krutylo, 2016 ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 30 survival strategy in soil for biological prepara- tions to inoculate soybean seeds can help to not only increase productivity of the culture, but also the formation of stable active population of specific rhizobia in soil. Considering the above, the objective of our work was to study the effect of binary composi- tion of the strains of soybean rhizobia with dif- ferent rates of growth on soybean symbiotic per- formance of different varieties. Materials and methods. The objects of the study were strains of soybean rhizobia with slow (B. japonicum 46) and intensive (B. japo- nicum KB11) growth, antisera to these strains, and soybean varieties Ustia and Omega Vin- nytska. In vegetation experiments, we studied the effect of binary composition of strains (B. japo- nicum 46 + B. japonicum KB11) on the sym- biotic parameters, growth, and development of soybean plants. Cultures of rhizobia were grown separately in 250 mL flasks with legume medium on an orbital shaker at 180–200 rpm at +28 ... + 30° C for 72 hours. The titre of bacteria was 2–4 × 109 CFU/mL. We studied different ratios of strains of B. japonicum 46 and B. japonicum KB11 in the inoculum (1 : 1, 1 : 2, 2 : 1, 1 : 3, 3 : 1, 1 : 4, 4 : 1). Bacterial load in case of pre- treatment of seeds in all variants was 200– 300 cells per 1 seed. Experiments were conducted in the green- house in 2 L vessels. As the substrate, sod- podzolic soil (pHwat. 5.5–5.9; humus content — 1.0 % that of easily hydrolyzed nitrogen (by Ti- urin and Kononova) — 55,0–60,0 mg; P2O5 — 150,0–160,0 mg and K2O (by Kirsanov) — 100,0–110,0 mg per 1 kg of soil), in which no local soybean rhizobia were used. Soybean of two varieties was cultivated: Ustia and Omega Vinnytska. Frequency of experiment is fivefold. Humidity was maintained at 60 % natural hu- midity. Efficiency of legume-rhizobia symbiosis was assessed by the following parameters: con- tent of dry matter content in the top, plant height, nodule-forming ability and activity of symbiotic nitrogen fixation. The content of pho- tosynthetic pigments in leaves of plants was measured in the flowering stage by spectropho- tometry [10]. The competitiveness of the studied strains (ratio of nodules formed by strain to the total number of studied nodules of each variant, ex- pressed in per cent) was determined by Gruber- Widal agglutination method [11]. We used an- tisera, obtained to slowly growing strain B. ja- ponicum 46 and intensely growing strain B. ja- ponicum KB11. To establish the serological identity of strains of soybean rhizobia, selected nodules were thoroughly washed with water. Each nodule was crushed in a penicillin vial with 1.2 mL of normal saline solution. The re- sulting homogenate was used as an antigen in agglutination with specific antisera. Forty-eight nodules were analysed from each variant. The following variants were used as the controls: normal saline solution + antigen (homogenate of nodules) and antiserum + antigen (pure culture of rhizobia against which the antiserum was ob- tained). The effectiveness of combined use of two strains of soybean rhizobia with slow and in- tense growth was studied in the field at the zone of Polissia of Ukraine (experimental field of the Institute of Agricultural Microbiology and Ag- roindustrial Manufacture of the NAAS). The strains of B. japonicum and B. japonicum KB11 were used in ratio 1 : 1. Inoculation load was 200–300 cells per 1 seed. Soil — leached black soil with small population of soybean rhizobia. Frequency of experiment — fourfold. Area of accounting field — 6 m2. Placement of fields — randomised. Soybean of Ustia variety was culti- vated. The activity of symbiotic nitrogen fixation was determined by acetylene ethylene method [12] on the gas chromatograph Chrom-4 with a flame ionization detector (column with β-β'- oxydipropionitrile). The temperature of the thermostat is 50 °C. Gas rate: hydrogen — 30 mL/min, nitrogen — 100 mL/min, air — 500 mL/min. Processing of data was performed by com- puter programs Microsoft Office Excel and Sta- tistica 7.0 Results and discussion. Vegetation experi- ment with soybean of Ustia variety was per- formed on sod-podzolic soil without soybean rhizobia, therefore, nodules were not formed on the roots of plants in the control variant (without inoculation) (Table 1). Inoculation of soybean seeds separately for strains of rhizobia with intense (B. japonicum KB11) and slow (B. japonicum 46) growth promoted formation of significant number of ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 31 Table 1. Symbiotic parameters, growth and development of soybean of variety Ustia under the effect of inoculation with binary composition of strains B. japonicum, vegetation experiment Variants of experiment Plant height, cm Dry top, g/plant Number of nodules, U/plant Weigh of nodules, g/plant Activity of symbiotic nitro- gen fixation, µg of N per plant per hour Without inoculation (control) 39.38 0.98 0 0 0 Inoculation with B. japonicum 46 45.26 1.29 13.22 0.25 11.18 Inoculation with B. japonicum КВ11 44.17 1.23 7.61 0.18 9.42 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 1) 48.58 1.39 15.44 0.29 14.72 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 2) 47.13 1.32 16.72 0.25 10.59 Inoculation with B. japonicum 46 + B. japonicum КВ11 (2 : 1) 45.70 1.30 21.78 0.27 13.24 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 3) 44.12 1.33 16.00 0.29 11.92 Inoculation with B. japonicum 46 + B. japonicum КВ11 (3 : 1) 42.24 1.36 17.00 0.29 12.21 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 4) 44.11 1.30 15.33 0.28 9.42 Inoculation with B. japonicum 46 + B. japonicum КВ11 (4 : 1) 41.81 1.37 10.44 0.28 14.86 НІР05 2.03 0.07 2.33 0.03 2.27 Note. In this and subsequent tables, reliable rise regarding parameters with monoinoculation is in bold. nodules (8 and 13 units / plant, respectively) with high nitrogenase activity (9.42 and 11.18 µg N per plant per hour). A positive effect of the studied cultures on such parameters as plant height and their top has been noted. Analysis of the obtained data showed that the combined use of two strains of soybean rhizobia with different rate of growth is more effective than monoinoculation. Thus, in most variants, regardless of the ratio of strains in the inoculum, the use of binary composition of B. japonicum 46 + B. japonicum KB11 provided a significant increase in the number of nodules (1.2–2.9 times) and their weight (1.1–1.6 times) compared with monoinoculation. In addition, the combination of two strains gave a significant increase of the level of nitrogenase activity in the nodules (1.3–1.6 times). Better than most parameters (height and top, weight of nodules and activity of symbiotic nitrogen fixation), was combined use of strains of B. japonicum 46 and B. japonicum KB11 in equal proportions — 1 : 1. Reliable gain of the top, weight of nodules and their nitrogenase ac- tivity has been also noted upon domination of slowly growing strain B. japonicum 46 in inocu- lum, when its proportion compared with inten- sely grown strain B. japonicum KB11 was 4 : 1. It should be noted that in case of absolute domi- nance of the strain with slow growth in nodules (monoinoculation with B. japonicum 46), these parameters were lower. That is, the interaction of the host plant with two active strains of soy- bean rhizobia forms more efficient symbiotic systems than the use of each strain separately. This fact can explain the synergistic effect of the studied microorganisms which functionally complement each other in binary composition. Similar results were obtained in vegetation experiment with soybean of Omega Vinnytska variety. Concomitant use of slowly and in- tensely growing strains had a positive effect on symbiotic parameters, growth, and development of soybean plants (Table 2). ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 32 Table 2. Symbiotic parameters, growth and development of soybean of variety Omega Vin- nytska under the effect of inoculation with binary composition of strains B. japonicum, vegeta- tion experiment Variants of experiment Plant height, cm Dry top, g/plant Number of nodules, U/plant Weigh of nodules, g/plant Activity of symbiotic nitro- gen fixation, µg of N per plant per hour Without inoculation (control) 33.98 1.40 0 0 0 Inoculation with B. japonicum 46 43.21 2.06 21.50 0.38 13.83 Inoculation with B. japonicum КВ11 43.07 2.02 21.33 0.38 13.24 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 1) 47.89 2.24 25.00 0.42 25.60 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 2) 44.99 2.11 20.61 0.38 12.07 Inoculation with B. japonicum 46 + B. japonicum КВ11 (2 : 1) 45.34 2.17 20.89 0.40 19.42 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 3) 45.57 2.06 20.94 0.39 14.72 Inoculation with B. japonicum 46 + B. japonicum КВ11 (3 : 1) 47.35 2.13 18.94 0.40 18.54 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 4) 46.37 2.05 18.94 0.35 13.54 Inoculation with B. japonicum 46 + B. japonicum КВ11 (4 : 1) 46.77 2.07 24.11 0.42 25.90 НІР05 1.96 0.13 3.32 0.03 2.62 When growing soybean variety Omega Vinnytska, the same as in the experiment with soybean variety Ustia, B. japonicum 46 and B. japonicum KB11 in the ratio of 1 : 1 were better for the most parameters. Compared to monoinoculation, such binary composition sig- nificantly contributed to increasing the number of nodules (by 16.3–17.2 %), their weight (by 11.1 %), and nitrogenase activity (1.85–1.93 ti- mes). Plant height was increased by 10.8–11.2 %, and top — by 8.7–10.9 %. The combination of two studied strains of rhizobia in inoculum in the ratio of 4 : 1 also had a positive effect on plant height of soybean variety Omega Vinnytska, weight of nodules, and activity of symbiotic nitrogen fixation. In this variant, a significant increase in these pa- rameters compared to monoinoculation has been observed. It should be noted that in both soybean va- rieties, inoculation with studied rhizobia both separately and as part of a binary composition, gave a significant intensification of the synthe- sis of chlorophyll (Table 3). For example, when growing soybean variety Ustia, in variants with different ratios of soybean rhizobia strains, con- tent of chlorophyll a and sum of chlorophyll a and b in the biomass of leaves were increased by 3.5–16.6 % and 5.8–20.7 %, respectively, compared to monoinoculation. The maximum of these parameters (180.46 mg / 100 g and 224.51 mg / 100 g, respectively) was observed in the variant with concomitant use of the strains B. japonicum 46 and B. japonicum KB11 in the ratio of 1 : 1. The greatest accumulation of photosyn- thetic pigments in biomass of the leaves of soy- bean of variety Omega Vinnytska was observed under the use of strains of rhizobia B. japonicum 46 and B. japonicum KB11 in the ratio of 1 : 1 and 1 : 4. In other variants reliable, but some- what lower rise of the content of chlorophyll a and sum of chlorophyll a and b compared with monoinoculation was obtained. Please note that ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 33 Table 3. Content of chlorophyll in the biomass of the leaves of soybean of different varieties at the influence of inoculation with binary composition of strains B. japonicum, vegetation expe- riment Variants of experiment Amount of chlorophyll, mg/100 g Ustia variety Omega Vinnytska variety а b а + b а b а + b Without inoculation (control) 99.83 27.13 126.96 56.59 15.65 72.24 Inoculation with B. japonicum 46 164.97 47.30 212.27 93.39 27.13 120.53 Inoculation with B. japonicum КВ11 154.74 31.24 185.98 98.00 29.39 127.39 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 1) 180.46 44.06 224.51 134.46 38.56 173.03 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 2) 167.06 46.86 213.91 128.22 30.09 158.31 Inoculation with B. japonicum 46 + B. japonicum КВ11 (2 : 1) 160.14 50.69 210.84 111.74 35.67 147.41 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 3) 163.77 47.61 211.38 120.19 35.97 156.16 Inoculation with B. japonicum 46 + B. japonicum КВ11 (3 : 1) 188.70 33.43 222.12 114.81 33.79 148.59 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 4) 167.29 52.61 219.90 128.19 39.55 167.74 Inoculation with B. japonicum 46 + B. japonicum КВ11 (4 : 1) 160.55 42.09 202.64 116.41 32.54 148.95 НІР05 9.43 8.76 12.19 4.41 3.48 6.68 in case of combination of two strains in inocu- lum in the ratio of 4 : 1, despite of the growing of symbiotic parameters, content of chlorophyll in the leaves of plants is increased only in soy- bean of variety Omega Vinnytska. For better understanding of the effect of rhizobia on formation of symbiotic system, we determined the proportion of strains B. japoni- cum 46 and B. japonicum KB11 in nodules of soybean of varieties Ustia and Omega Vinnyt- ska (Table 4). Studies have shown that after the use of strains B. japonicum 46 and B. japonicum 46 KB11 in the ratio of 1 : 1 in both varieties of soybean, number of root nodules formed by these microorganisms was almost similar — 54.2 % : 45.8 % and 45.8 % : 54.2 %. It has been established that increasing the proporti- on of a particular strain in binary composition (1 → 2 → 3 → 4) provided corresponding in- crease of its proportion in nodules. After inocula- tion with B. japonicum 46 + B. japonicum KB11 (1 : 2), distribution of strains in nodules was — 25.0 % : 75.0 %, whereas in case of proportion of strains B. japonicum 46 and B. japonicum KB11 (2 : 1) — 83.3 % : 16.7 %, respectively. The only exception were two variants: on soy- bean of variety Ustia with the use of strains B. japonicum 46 and B. japonicum KB11 in the ratio of 3 : 1 (their proportion in nodules was similar — 50.0 % : 50.0 %) on soybean of va- rieties Omega Vinnytska with a ratio of strains of 2 : 1 (their proportion amounted to 41.7 % : : 58.3 %). That is, the dominance of a particular strain of rhizobia in the inoculum is not always ensured its dominance in the nodules. It should be noted that regardless of the ra- tion of rhizobia in binary compositions, there was no full replacement of one strain by another one from the nodule populations. Each strain occupied its ecological niche, which may indi- cate the presence of close mutual regulation of the amount of symbiotic nitrogen fixers in the rhizosphere of soybean, as well as their ability to compete for specific binding sites on the roots of plants. ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 34 Table 4. Portion of strains B. japonicum 46 and B. japonicum КВ11 in nodules of soybean varieties Ustia and Omega Vinnytska, vegetation experiments Variants of experiment Proportion of strains of soybean rhizobia in nodules, % Ustia Omega Vinnytska B. japoni- cum 46 B. japoni- cum КВ11 B. japoni- cum 46 B. japoni cum КВ11 Without inoculation (control) 0 0 0 0 Inoculation with B. japonicum 46 100.0 0 100.0 0 Inoculation with B. japonicum КВ11 0 100.0 0 100.0 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 1) 54.2 45.8 45.8 54.2 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 2) 25.0 75.0 33.3 66.7 Inoculation with B. japonicum 46 + B. japonicum КВ11 (2 : 1) 83.3 16.7 41.7 58.3 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 3) 12.5 87.5 4.2 95.8 Inoculation with B. japonicum 46 + B. japonicum КВ11 (3 : 1) 50.0 50.0 79.2 20.8 Inoculation with B. japonicum 46 + B. japonicum КВ11 (1 : 4) 12.5 87.5 8.3 91.7 Inoculation with B. japonicum 46 + B. japonicum КВ11 (4 : 1) 79.2 20.8 75.0 25.0 The effectiveness of soybean inoculation with strains of B. japonicum 46 and B. japoni- cum KB11 and their binary composition (ratio of strains of 1 : 1) was studied in a field experi- ment on the background of a small local popula- tion of specific rhizobia. Inoculation of soybean seeds with studied strains helped to increase productivity of culture by 14.3–17.0 % compared to control (Table 5). The combined use of these strains in binary composition — B. japonicum 46 + B. japoni- cum KB11 was more efficient. In this variant, we received the maximum yield of soybean grain — 2.90 t/ha. Thus, the results of the conducted studies showed that the greatest effect from soybean bacterization can be obtained by a combination of two strains of rhizobia with slow (B. japoni- cum 46) and intensive (B. japonicum KB11) growth in the ratio of 1 : 1 (binary composition) in inoculum. Concomitant use of strains con- tributed to the formation of balanced symbiotic system, raising the level of fixation of molecular nitrogen, chlorophyll content in biomass of lea- ves and top of soybean of different varieties by 7.8–19.6 % compared with parameters in case of monoinoculation. Table 5. Seed productivity of soybean of variety Ustia under the effect of combined ino- culation with slowly and intensely growing strains of rhizobia, field experiment, 2013 Варіанти досліду Productivity, t/ha Yield raise, % Without inoculation (control) 2.23 – Inoculation with B japonicum 46 2.61 17.0 Inoculation with B. japonicum КВ11 2.55 14.3 Inoculation with B. japonicum 46 + B. japonicum КВ11 2.90 30.0 НІР05 0.21 ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 35 Against the background of soil population of specific rhizobia, inoculation of soybean by the composition of strains B. japonicum 46 + B. japonicum KB11 provided increase in pro- ductivity of culture by 11.1–13.7 % compared to monoinoculation. Further studies of binary composition of the strains B. japonicum are promising from a sci- entific and practical point of view. 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Сели- верстова, С. М. Алисова, И. Ф. Орлова // Тр. ВНИИСХМ. — Л., 1978. — Т. 47. — С. 74–83. 10. Гродзинский А. М. Краткий справочник по физиологии растений / А. М. Гродзинский, Д. М. Гродзинский. — К. : Наукова думка, 1973. — 398 с. 11. Кэбот Э. Экспериментальная иммуноло- гия / Э. Кэбот, Б. Мейер. — М. : Медицина, 1968. — 677 с. 12. The acetylene-ethylene assay for N2-fi- xation: Laboratory and field evaluation / R. W. F. Hardy, R. D. Holsten, E. K. Jackson, R. C. Burns // Plant Physiol. — 1968. — Vol. 43, № 8. — P. 1185–1207. КОМПОЗИЦІЯ ШТАМІВ BRADYRHI- ZOBIUM JAPONICUM ТА ЇЇ ЗАСТОСУ- ВАННЯ ДЛЯ ІНОКУЛЯЦІЇ СОЇ Д. В. Крутило Інститут сільськогосподарської мікробіології та агропромислового виробництва НААН, м. Чернігів За умов вегетаційних дослідів встанов- лено, що найбільший ефект від бактеризації сої можна отримати при поєднанні в іноку- люмі двох штамів бульбочкових бактерій з повільним (Bradyrhizobium japonicum 46) та інтенсивним (B. japonicum КВ11) ростом у співвідношенні 1 : 1 (бінарна композиція). КОМПОЗИЦИЯ ШТАММОВ BRADYRH- IZOBIUM JAPONICUM И ЕЁ ПРИМЕНЕ- НИЕ ДЛЯ ИНОКУЛЯЦИИ СОИ Д. В. Крутило Институт сельскохозяйственной микробиологии и агропромышленного производства НААН, г. Чернигов В условиях вегетационных опытов пока- зано, что наибольший эффект от бактери- зации сои можно получить при сочетании в инокулюме двух штаммов клубеньковых бактерий с медленным (Bradyrhizobium ja- ponicum 46) и интенсивным (B. japonicum КВ11) ростом в соотношении 1 : 1 (бинар- ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24. 36 Сумісне використання цих штамів сприяло формуванню збалансованої симбіотичної си- стеми, підвищенню рівня фіксації молекуля- рного азоту, вмісту хлорофілів у біомасі листя та надземної маси рослин сої різних сортів на 7,8–19,6 % відносно моноінокуля- ції. У польовому досліді інокуляція насіння сої композицією штамів B. japonicum сприя- ла збільшенню урожайності сої на 11,1– 13,7 % порівняно з моноінокуляцією. Ключові слова: Bradyrhizobium japoni- cum, бінарна композиція штамів, інокуляція, врожайність, соя. ная композиция). Совместное использование штаммов способствовало формированию сбалансированной симбиотической систе- мы, повышению уровня фиксации молекуляр- ного азота, содержания хлорофиллов в био- массе листьев и надземной массы растений сои различных сортов на 7,8–19,6 % отно- сительно моноинокуляции. В полевом опыте инокуляция семян сои композицией штаммов B. japonicum способствовала увеличению урожайности сои на 11,1–13,7 % по сравне- нию с моноинокуляцией. Ключевые слова: Bradyrhizobium japoni- cum, бинарная композиция штаммов, иноку- ляция, урожайность, соя. ISSN 1997-3004 Сільськогосподарська мікробіологія. — 2016. — Вип. 24.
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spelling oai:ojs2.smic.in.ua:article-1122026-07-22T10:10:42Z COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION Krutylo, D. V. Bradyrhizobium japonicum, binary composition of strains, competitiveness, inoculation, yield, soybean Bradyrhizobium japonicum, binary composition of strains, competitiveness, inoculation, yield, soybean In the vegetation experiment conditions it was established that the greatest effect of soybean bacterization can be obtained by two strains of nodule bacteria with slow (Bradyrhizobium japonicum 46) and intensive (B. japonicum КВ11) growth rates when these strains used in inoculum in the ratio 1 : 1 (binary composition). In compared to the mono-inoculation the combined use of these strains contributed the formation of balanced symbiotic system, increase the level of molecular nitrogen fixation, content of chlorophyll in the biomass leaves and above ground mass of different soybean plants varieties on 7.8–19.6 %. In a field experiment inoculation of soybean seeds with a composition of B. japonicum strains to increase the soybean yields by 11.1–13.7 % compared to the mono-inoculation. In the vegetation experiment conditions it was established that the greatest effect of soybean bacterization can be obtained by two strains of nodule bacteria with slow (Bradyrhizobium japonicum 46) and intensive (B. japonicum КВ11) growth rates when these strains used in inoculum in the ratio 1 : 1 (binary composition). In compared to the mono-inoculation the combined use of these strains contributed the formation of balanced symbiotic system, increase the level of molecular nitrogen fixation, content of chlorophyll in the biomass leaves and above ground mass of different soybean plants varieties on 7.8–19.6 %. In a field experiment inoculation of soybean seeds with a composition of B. japonicum strains to increase the soybean yields by 11.1–13.7 % compared to the mono-inoculation. Institute of Agrocultural Microbiology and Agro-industrial Manufacture of NAAS of Ukraine 2016-10-09 Article Article Рецензована Стаття application/pdf https://smic.in.ua/index.php/journal/article/view/112 10.35868/1997-3004.24.29-36 Agricultural microbiology; Vol. 24 (2016): Agriciltural microbiology; 29-36 Сільськогосподарська мікробіологія; Том 24 (2016): Сільськогосподарська мікробіологія; 29-36 1997-3004 10.35868/1997-3004.24 en https://smic.in.ua/index.php/journal/article/view/112/115 Авторське право (c) 2016 D. V. Krutylo https://creativecommons.org/licenses/by/4.0
spellingShingle Bradyrhizobium japonicum
binary composition of strains
competitiveness
inoculation
yield
soybean
Krutylo, D. V.
COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_alt COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_full COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_fullStr COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_full_unstemmed COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_short COMPOSITION OF STRAINS BRADYRHIZOBIUM JAPONICUM AND ITS USE FOR SOYBEAN INOCULATION
title_sort composition of strains bradyrhizobium japonicum and its use for soybean inoculation
topic Bradyrhizobium japonicum
binary composition of strains
competitiveness
inoculation
yield
soybean
topic_facet Bradyrhizobium japonicum
binary composition of strains
competitiveness
inoculation
yield
soybean
Bradyrhizobium japonicum
binary composition of strains
competitiveness
inoculation
yield
soybean
url https://smic.in.ua/index.php/journal/article/view/112
work_keys_str_mv AT krutylodv compositionofstrainsbradyrhizobiumjaponicumanditsuseforsoybeaninoculation