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Promising Populations of Alfalfa (Medicago varia Martyn.) for Variety Change under Climatic Conditions of the Middle Volga 伏尔加河中游气候条件下紫花苜蓿(Medicago varia Martyn.)
Pub Date : 2023-12-01 DOI: 10.3103/s1068367423080219

Abstract

The research was performed to identify the most promising populations of alfalfa (Medicago varia Martyn.) for their use in variety change. The work was performed under the conditions of the southern forest-steppe of the Middle Volga region in 2018–2021. The material for the study was represented by five promising populations of alfalfa. The released variety Izumruda was taken as the standard. The soil of the experimental plot was represented by typical medium-humus heavy loamy chernozem with the humus content of 5.2% in the plow layer; the content of mobile potassium and phosphorus (according to Kirsanov) at the level of 292 and 156 mg/kg of soil, respectively; the amount of easily hydrolyzable nitrogen of 116–132 mg/kg of soil, and pH of salt extract equal to 6.9–7.2. The seeding rate was 15 kg/ha. The largest total mean yield of green mass for the years of research was provided by samples Populyatsiya 24 (39.5 t/ha), Temno-zelenaya (39.9 t/ha), and Populyatsiya 13 (40.2 t/ha), which was by 11.0–12.9% higher than the yield of standard variety Izumruda. The production of dry matter in total of two cuttings was the highest for the varieties Populyatsiya 4 (9.4 t/ha), Temno-zelenaya (9.5 t/ha), and Populyatsiya 13 (10.2 t/ha), which exceeded the standard by 11.9–21.4%. The high content of protein and carotene was typical for the varieties Temno-zelenaya (16.74% and 115 mg per 1 kg of feed, respectively) and Populyatsiya 13 (16.62% and 110 mg per 1 kg of feed, respectively), and the protein content was the highest (16.77%) for Populyatsiya 24.

摘要 该研究旨在确定紫花苜蓿(Medicago varia Martyn.)这项工作于2018-2021年在伏尔加河中游地区南部森林草原条件下进行。研究材料由五个有潜力的紫花苜蓿种群代表。以已发布的品种 Izumruda 为标准。实验地块的土壤为典型的中腐殖质重壤土切尔诺泽姆,耕层腐殖质含量为 5.2%;移动钾和磷含量(根据基尔萨诺夫标准)分别为 292 毫克/千克土壤和 156 毫克/千克土壤;易水解氮含量为 116-132 毫克/千克土壤,盐提取物的 pH 值为 6.9-7.2 。播种量为 15 公斤/公顷。研究期间,"波普利亚采亚 24 号"(39.5 吨/公顷)、"Temno-zelenaya"(39.9 吨/公顷)和 "波普利亚采亚 13 号"(40.2 吨/公顷)样品的平均绿色总产量最高,比标准品种 "Izumruda "的产量高出 11.0-12.9%。Populyatsiya 4 号(9.4 吨/公顷)、Temno-zelenaya(9.5 吨/公顷)和 Populyatsiya 13 号(10.2 吨/公顷)品种两次扦插的总干物质产量最高,比标准品种高出 11.9-21.4%。蛋白质和胡萝卜素含量高的典型品种是 Temno-zelenaya(每 1 公斤饲料中分别含有 16.74% 和 115 毫克)和 Populyatsiya 13(每 1 公斤饲料中分别含有 16.62% 和 110 毫克),而 Populyatsiya 24 的蛋白质含量最高(16.77%)。
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引用次数: 0
Estimation of Water Conductivity of Typical Chernozem in the Depressed Zone of the Water-Regulating Forest Belt 估算水调节森林带凹陷区典型切尔诺泽姆的导水率
Pub Date : 2023-12-01 DOI: 10.3103/s1068367423090148

Abstract

The studies aimed to assess the change in the absorbency of the soil with distance from the forest belt, including the depressed zone. The work was carried out in 2018–2022 in a long-term field stationary experience in contour-reclamation agriculture in the Kursk region. The assessment was carried out for erosion-threatening slopes of southern and northern exposures with an agroforest reclamation complex, represented by contour-parallel placed water-regulating two-row forest belts with a water-catching ditch in the row-spacing and a masonry-cum-earth dam along the lower edge. The soil was a typical medium-thick low-humus heavy loamy chernozem. To determine the width of the depressed zone, the yield of crops was studied at 5, 10, and 25 m from the forest belt up and down the slope, the control was the upland. A significant decrease in harvest, regardless of weather conditions, was observed at 5 m; for buckwheat it was 68.8–75.0%, spring barley 40.0–65.7%, winter wheat 24.9–56.9% compared to control. The absorbing capacity of the soil was determined on perennial grasses and spring barley in the depressed zone by the method of small flooded areas and sprinkling of runoff areas. The intensity of pressure absorption in the crops of perennial grasses on the soils of the slope of the northern exposure was higher than in the crops of barley by 55%, of the southern, four times. The intensity of water absorption, estimated by the method of sprinkling of runoff plots, in crops of perennial grasses on the slope of the northern exposure was 0.6 mm/min, of the southern exposure 0.8 mm/min, which was significantly higher than in barley crops. To increase the absorbency of the soil, both during the period of snowmelt and during heavy rains, it is recommended to sow perennial grasses along forest strips more than 5 m wide.

摘要 研究旨在评估土壤吸水性随距离林带(包括郁闭区)的变化情况。这项工作于 2018-2022 年在库尔斯克地区一个具有长期污染开垦农业经验的田间固定点进行。评估针对的是南面和北面有侵蚀威胁的斜坡,斜坡上有一个农林开垦综合体,由等高线平行放置的水调节双行林带代表,林带的行间距上有一条集水沟,下沿有一个砖石土坝。土壤为典型的中厚低腐殖质重壤土。为了确定郁闭带的宽度,研究了坡上和坡下距离林带 5 米、10 米和 25 米处的作物产量,对照为高地。与对照组相比,无论天气条件如何,5 米处的收成都明显减少;荞麦减少了 68.8-75.0%,春大麦减少了 40.0-65.7%,冬小麦减少了 24.9-56.9%。通过小面积漫灌和径流区洒水的方法,测定了郁闭区多年生禾本科植物和春大麦的土壤吸收能力。北坡土壤上多年生禾本科作物的压力吸收强度比大麦作物高 55%,是南坡的四倍。根据径流地块洒水法估算,北部斜坡上多年生禾本科作物的吸水强度为 0.6 毫米/分钟,南部斜坡上多年生禾本科作物的吸水强度为 0.8 毫米/分钟,明显高于大麦作物。为了在融雪期和暴雨期提高土壤的吸收能力,建议在宽度超过 5 米的林带上播种多年生牧草。
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引用次数: 0
Changes in Kinetic Parameters and Cytological Characteristics of Rooster Spermatozoa under the Influence of Technological Factors 技术因素影响下公鸡精子动力学参数和细胞学特征的变化
Pub Date : 2023-12-01 DOI: 10.3103/s1068367423060150

Abstract

The problems of fertility reducing of rooster semen in the cycle “native sperm–equilibration–short-term and long-term storage (cryopreservation)” are urgent. The purpose of this study was to determine the effect of different methods of preparation (centrifugation or filtration) of rooster semen on its quality characteristics, depending on the method of removing possible pollutions; to evaluate the change in the composition of the cytosol of spermatozoa of native sperm under the influence of dilution and during short-term storage. Materials and methods. Semen of roosters (n = 22) of the Russian white breed was used. Experiment 1: semen was divided into 3 aliquots: I—diluted with synthetic cryoprotective medium LCM in a ratio of 1:1, II—filtered semen diluted with medium (membrane pore diameter 0.2 μm), III—centrifuged (at 3000 rpm in for 10 minutes). Native and frozen/thawed sperm were evaluated in terms of damage to spermatozoa membranes, chromatin, and acrosomes. The composition of carbohydrates and polyols of native spermatozoa was assessed under the influence of dilution and after storage (3 h). The advantage of filtration as a method of technological preparation of semen compared to centrifugation in terms of progressive motility (with rectilinear-translational movement) of sperm (41.0% versus 27.0%) and chromatin damage (43.4% versus 66.4%) has been shown. The same advantage was observed in frozen/thawed sperm filtered before freezing in terms of progressive motility (25.5% vs. 5.5%) and chromatin damage—16.5% vs. 33.6%, respectively. Semen filtration, as a method of technological processing of rooster semen, can be an effective additional step in the preparation of semen for artificial insemination and/or short-term storage. The main component in the composition of the cytosol of native spermatozoa, according to the content of carbohydrates and polyols, was inositol —73.7% of Σ carbohydrates and polyols. The level of inositol decreased during storage by 6.5 times (from 0.030 to 0.007 mg/mL). The data obtained let us suppose the role of inositol as the main antioxidant in the cytosol of spermatozoa. Technological factors of storing rooster semen in various modes (short-term at a temperature of 5°C and long-term at a temperature of –196°C) have a significant impact on the ratio of sperm cytosol components (carbohydrates and polyols). A significant, 2.5‑fold decrease in the relative content of inositol in the cytosol of frozen/thawed spermatozoa, compared with the indicators of native semen, allows us to recommend the introduction of the antioxidant inositol into the composition of cryoprotective media for rooster semen.

摘要 公鸡精液在 "原生精子-校准-短期和长期贮存(冷冻保存)"周期中降低受精率的问题迫在眉睫。本研究的目的是确定公鸡精液的不同制备方法(离心或过滤)对其质量特性的影响,这取决于去除可能的污染的方法;评估在稀释的影响下和短期储存期间原生精子精子细胞质成分的变化。材料和方法使用俄罗斯白种公鸡(n = 22)的精液。实验 1:精液分为 3 等分:I 用合成低温保护介质 LCM 按 1:1 的比例稀释;II 用介质稀释过滤精液(膜孔直径 0.2 μm);III 离心(3000 转/分,10 分钟)。从精子膜、染色质和顶体的损伤角度对原生精子和冷冻/解冻精子进行了评估。在稀释和储存(3 小时)后,对原生精子的碳水化合物和多元醇成分进行了评估。与离心法相比,过滤法作为精液技术制备方法在精子的渐进运动(直线-横向运动)(41.0% 对 27.0%)和染色质损伤(43.4% 对 66.4%)方面具有优势。在冷冻前过滤的冷冻/解冻精子中也观察到了同样的优势,即精子的渐进运动(25.5% 对 5.5%)和染色质损伤(16.5% 对 33.6%)。精液过滤作为公鸡精液的一种技术处理方法,可以成为人工授精和/或短期储存精液制备过程中的一个有效补充步骤。根据碳水化合物和多元醇的含量,本地精子细胞液组成的主要成分是肌醇--占Σ碳水化合物和多元醇的73.7%。在储存过程中,肌醇的含量下降了 6.5 倍(从 0.030 毫克/毫升降至 0.007 毫克/毫升)。这些数据表明肌醇是精子细胞液中的主要抗氧化剂。以不同模式(5°C 温度下的短期储存和 -196°C 温度下的长期储存)储存公鸡精液的技术因素对精子细胞溶液成分(碳水化合物和多元醇)的比例有显著影响。与原生精液的指标相比,冷冻/解冻精子细胞质中肌醇的相对含量明显下降了 2.5 倍,因此我们建议在公鸡精液低温保护介质的成分中加入抗氧化剂肌醇。
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引用次数: 0
Effect of Presowing Treatment of Spring Wheat Seeds (Triticum aestivum L.) with Organic Acids of Natural Origin in a Vacuum Environment on Plant Growth and Development 在真空环境中用天然有机酸预处理春小麦种子(Triticum aestivum L.)对植物生长和发育的影响
Pub Date : 2023-12-01 DOI: 10.3103/s1068367423070248

Abstract

The study investigates the effect of presowing treatment of spring wheat seeds (Triticum aestivum L.) with succinic and salicylic acids at concentrations of 10–5 M and 10–3 M with and without the use of a vacuum infiltrator. The obtained results showed a positive effect of seed treatment under conditions of vacuum pressure (0.9 atm, 15 min) on the development of coleoptile and seedling root on the seventh day of germination. In terms of the germination energy or vigor, exposure to a vacuum environment did not have a significant effect on the third day. In the stressful conditions of plant development under hyperthermia exposure, it was found that treatment of seeds with salicylic acid at a concentration of 10–3 M in a vacuum environment ensured the best result in that it reduced the stress load by suppressing catalase activity. Succinic acid at a concentration of 10–5 M proved to be the best option as a growth enhancer. In combination with the use of a vacuum environment, this treatment most significantly accelerated the development of the coleoptile and the root of the seedling on the seventh day of germination.

摘要 该研究调查了在使用或不使用真空渗入器的情况下用浓度为 10-5 M 和 10-3 M 的琥珀酸和水杨酸对春小麦种子(Triticum aestivum L.)进行播前处理的效果。结果表明,在真空压力(0.9 个大气压,15 分钟)条件下处理种子,对萌发第七天的胚叶和幼苗根系的发育有积极影响。就萌发能量或活力而言,暴露在真空环境中对第三天没有显著影响。在高热暴露下植物生长的胁迫条件下,发现在真空环境中用浓度为 10-3 M 的水杨酸处理种子效果最好,因为它能抑制过氧化氢酶的活性,从而减轻胁迫负荷。浓度为 10-5 M 的琥珀酸被证明是最佳的生长促进剂。结合使用真空环境,这种处理方法在发芽第七天最显著地加速了秧苗的叶柄和根的发育。
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引用次数: 0
Combined Effect of PGPB Strains Pseudomonas Plecoglossicida 2,4-D and Humic Substances on the Growth and Content of Photosynthetic Pigments and Phytohormones in Wheat Plants in Drought Conditions Plecoglossicida 假单胞菌 PGPB 菌株 2,4-D 和腐殖质对干旱条件下小麦植株生长及光合色素和植物激素含量的联合影响
Pub Date : 2023-12-01 DOI: 10.3103/s1068367423070297

Abstract

The aim of the study was to study the effect of bacteria that stimulate plant growth and humic substances on the content of chlorophyll, nitrogen balance index, cytokinin concentration, and abscisic acid in wheat plants grown in drought conditions. The accumulation of the raw mass of wheat plants during treatment with a strain of Pseudomonas plecoglossicida 2,4-D bacteria and humic substances with a deficiency of soil moisture is shown. Stimulation of plant growth is associated with the activation of root growth, which led to an increase in the nitrogen balance index and chlorophyll concentration in the treated plants. The detected increase in the concentration of chlorophyll in plants treated with P. plecoglossicida 2,4-D correlated with a decrease in the content of abscisic acid in shoots, and that in plants treated with humates correlated with an increase in cytokinins in shoots. A higher efficiency of plant treatment with a combination of bacteria and humic substances than any of them individually may be associated with the additive effect of these treatments on hormonal balance.

摘要 该研究旨在探讨刺激植物生长的细菌和腐殖质对干旱条件下生长的小麦植株叶绿素含量、氮平衡指数、细胞分裂素浓度和赤霉酸的影响。在土壤水分不足的情况下,用一株褶皱假单胞菌(Pseudomonas plecoglossicida)2,4-D 细菌和腐殖质处理小麦植株时,小麦植株原始质量的积累情况可见一斑。植物生长刺激与根系生长激活有关,根系生长激活导致氮平衡指数和叶绿素浓度增加。叶绿素浓度的增加与植物嫩芽中脱落酸含量的减少有关,而叶绿素浓度的增加与植物嫩芽中细胞分裂素含量的增加有关。与单独使用细菌和腐殖质相比,使用细菌和腐殖质组合处理植物的效率更高,这可能与这些处理对激素平衡的叠加效应有关。
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引用次数: 0
Improving Protein Content Prediction in Wheat Grain 改进小麦籽粒蛋白质含量预测
Pub Date : 2023-10-01 DOI: 10.3103/s1068367423050099

Abstract

The paper reports a study conducted with the goal of expanding the possibilities of using the previously obtained multiple nonlinear regression equation describing the dependence of protein content in wheat grain (Y, %) on the amount of crude gluten (X1, %) and 1000-grain weight (X2, g). It has been demonstrated that the original and three improved equations can be used in breeding practice to predict wheat grain protein content. The algorithm and the results of testing the predictive ability and prediction accuracy of the equations using independent data were presented. Analysis of the experimental data from 288 Russian and foreign publications, with a total number of observations n = 4604, obtained for more than 300 winter and spring soft and durum wheats in Russia and abroad (Albania, Belarus, Bulgaria, Egypt, Kazakhstan, Lithuania, Poland, Slovakia, and Ukraine) within the period from 1959 to 2020 showed that 755 observations, or 16.4%, fell beyond the variation limits accepted by GOST 10846-91: Method of Protein Determination. At the same time, the accuracy of protein content prediction reached 83.6%. The developed equations can be used for predicting protein content in almost all cases when the results of protein and crude gluten content analysis in wheat grain, as well as 1000-grain weight, are provided for actual or fixed moisture content or are recalculated for absolute dry matter.

摘要 本文报告了一项研究,目的是扩大使用以前获得的描述小麦籽粒蛋白质含量(Y,%)与粗面筋含量(X1,%)和千粒重(X2,克)之间关系的多元非线性回归方程的可能性。实验证明,原始方程和三个改进方程可用于育种实践,预测小麦籽粒蛋白质含量。介绍了利用独立数据测试方程预测能力和预测准确性的算法和结果。对俄罗斯和国外(阿尔巴尼亚、白俄罗斯、保加利亚、埃及、哈萨克斯坦、立陶宛、波兰、斯洛伐克和乌克兰)1959 年至 2020 年期间 300 多种冬小麦和春软小麦及硬质小麦的 288 份俄罗斯和国外出版物中的实验数据进行了分析,观测数据总数 n = 4604,结果表明有 755 个观测数据(即 16.4%)超出了 GOST 10846-91 所接受的变化范围:蛋白质测定方法》所接受的变化限度。同时,蛋白质含量预测的准确率达到 83.6%。在提供实际或固定含水量的小麦谷物蛋白质和粗面筋含量分析结果以及 1000 粒重或重新计算绝对干物质的情况下,所开发的方程几乎可用于所有情况下的蛋白质含量预测。
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引用次数: 0
Nitrogen Regime of Sod–Podzol Soil with Prolonged Use of Different Types and Combinations of Mineral Fertilizers 长期施用不同类型和组合矿物肥料的草皮-Podzol 土壤的氮调节机制
Pub Date : 2023-10-01 DOI: 10.3103/s1068367423050178

Abstract

The study investigates the effect of various types and combinations of mineral fertilizers on the fractional composition of nitrogen in sod–podzol soil in a long-term stationary experiment and compares it with a virgin (undisturbed) analog. The studies were carried out on the experimental field of the Perm Research Institute of Agriculture in 2016 and 2018 after harvesting barley in an eight-field crop rotation on sod–podzol heavy loamy soil. The experiment’s design was as follows: without fertilizers: N90; Р90; K90; N90P90; N90K90; P90K90; and N90Р90K90. To assess the effect of nitrogen, phosphorus, potash fertilizers, and their combinations on the nitrogen regime of sod–podzol soil, arable soil was compared with the virgin analog. The nitrogen pool of sod-podzol soil of a long-term station experiment is represented by 64–71% nonhydrolyzable and 17–22% not readily hydrolyzable forms of nitrogen. Long-term use of various types and combinations of mineral fertilizers did not significantly change the ratio of nitrogen fractions characteristic of virgin soils of this type. Nitrogen fertilizers, both in single-strength application and in combination with potassium chloride (N90K90) and superphosphate (N90P90), contributed to an increase in the total nitrogen content in the topsoil layer by 10–20% compared to the control; mineral nitrogen compounds improved the total nitrogen content two- and threefold. Single-strength application of potash fertilizer provided an increase in the content of total nitrogen in the soil by 12%; introduction of superphosphate did not have an appreciable effect on the nitrogen regime of the soil. Long-term use of complete mineral fertilizer (N90P90K90) maintained the total nitrogen at the virgin soil level, that is, 1490 mg/kg. Long-term single-strength application of nitrogen fertilizers increased the content of nitrate nitrogen by 1.5–2.5 times and ammonium by 1.5‒14.6 times in the soil throughout the entire meter layer. In the variants N90P90, N90K90, and N90P90K90, stock of mineral nitrogen increased two- to threefold in the 0–20 cm layer and doubled in the 0–100 cm layer compared the control variant.

摘要 本研究调查了在长期固定实验中,各种类型和组合的矿物肥料对草皮-podzol 土壤中氮组分的影响,并将其与原始(未受干扰)模拟物进行了比较。研究于 2016 年和 2018 年在彼尔姆农业研究所的试验田中进行,在大麦收获后,在草皮-podzol 重壤土上进行八田轮作。实验设计如下:不施肥:N90;Р90;K90;N90P90;N90K90;P90K90;N90Р90K90。为了评估氮肥、磷肥、钾肥及其组合对草皮-podzol 土壤氮机制的影响,将耕地土壤与原生模拟土壤进行了比较。在一个长期试验站实验中,草皮-podzol 土壤的氮库中有 64-71% 的非水解氮和 17-22% 的不易水解氮。长期使用各种类型和组合的矿物肥料并没有明显改变这类原始土壤特有的氮组分比例。与对照组相比,单一浓度的氮肥以及与氯化钾(N90K90)和过磷酸钙(N90P90)混合施用,可使表土层的总氮含量增加 10-20%;矿物氮化合物可使总氮含量提高两倍和三倍。单次施用钾肥可使土壤中的全氮含量增加 12%;施用过磷酸钙对土壤的氮素结构没有明显影响。长期施用全矿物肥料(N90P90K90)可将全氮保持在原始土壤水平,即 1490 毫克/千克。长期施用单一浓度的氮肥会使整个米层土壤中的硝态氮含量增加 1.5-2.5 倍,铵态氮含量增加 1.5-14.6 倍。在 N90P90、N90K90 和 N90P90K90 变体中,与对照变体相比,0-20 厘米土层中的矿物氮含量增加了 2-3 倍,0-100 厘米土层中的矿物氮含量增加了一倍。
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引用次数: 0
Effects of Holsteinization on Productive Lifespan of Black-and-White Cows in Smolensk Oblast 荷斯坦化对斯摩棱斯克州黑白花奶牛生产寿命的影响
Pub Date : 2023-10-01 DOI: 10.3103/s1068367423050130

Abstract

The aspects of Black-and-White holsteinized cow’s productive lifespan were the objectives of the survey carried out with 9270 Black-and-White cows and their crosses with Holstein bulls that were culled in 1990–2020 for different reasons at the end of their productive lifespan. The survey was performed based on pedigree and commercial cattle farms in Smolensk oblast with the grouping method. Phenotypic correlations between the analyzed production traits were estimated. Holsteinization of the Black-and-White breed in the Smolensk oblast resulted in its absorption through crossing the cows with Holstein sires to have a Holstein blood percentage of 90.0%. The survey outcomes have revealed a regularity indicating that the higher the percentage of Holstein blood is, the shorter longevity of cows is observed. The difference in lifespan of cows with Holstein blood percentage from 17.6 to 87.1% comprised 4.36 lactation cycles. The productive lifespan of cows can reach 12–13 lactation cycles. However, 50.9% of these animals are culled between the second and fourth lactation cycles. The ratio of days in milk to days dry in dairy cows tends to change with aging. Thus, the longer the productive lifespan in cows is, the higher the number of days in milk per each year of life, on average, is recorded. The major proportion of cows is productive within the ratio of days in milk to lifetime days, varying in the range of 50.1 to 75.0%. Their lifespan is measured by 4.3 lactation cycles. The lifetime milk yield usually varies from 10 000 to 30 000 kg (for 56.7% of the analyzed livestock). The parameter for lifetime daily yield is reasonable to use as an indicator of cow productive lifespan due to its strong positive correlations (r = 0.44–0.90) relative to age-related and productivity performance. The Black-and-White cattle inventory in the Smolensk oblast has proven that it is reasonable to replace this breed with the Holstein breed for its subsequent pure breeding.

摘要 黑白荷斯坦化奶牛生产寿命的各个方面是本次调查的目标,调查对象是 1990-2020 年间因不同原因在生产寿命末期被淘汰的 9270 头黑白奶牛及其与荷斯坦公牛的杂交牛。调查以斯摩棱斯克州的纯种和商业养牛场为基础,采用分组法进行。对所分析的生产性状之间的表型相关性进行了估算。斯摩棱斯克州黑白品种的荷斯坦化是通过奶牛与荷斯坦母牛杂交实现的,其荷斯坦血统比例为 90.0%。调查结果显示,荷斯坦血统比例越高,奶牛寿命越短。荷斯坦血统比例从 17.6%到 87.1%的奶牛寿命相差 4.36 个泌乳周期。奶牛的生产寿命可达 12-13 个泌乳周期。然而,这些奶牛中有 50.9% 在第二至第四个泌乳周期之间被淘汰。奶牛的泌乳天数与干奶天数之比随年龄增长而变化。因此,奶牛的生产寿命越长,平均每年的产奶天数就越高。大部分奶牛的产奶天数与终生天数之比介于 50.1% 到 75.0% 之间。奶牛的寿命以 4.3 个泌乳周期计算。终生产奶量通常在 10 000 至 30 000 千克之间(占所分析牲畜的 56.7%)。终生日产量参数与年龄和生产性能有很强的正相关性(r = 0.44-0.90),因此将其作为奶牛生产寿命的指标是合理的。斯摩棱斯克州的黑白花牛存栏情况证明,用荷斯坦品种取代该品种进行后续纯种繁育是合理的。
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引用次数: 0
Modeling the Effectiveness of Bacillius subtilis Strains Depending on Natural and Climatic Factors in Soft Wheat Cultivation 根据自然和气候因素模拟枯草芽孢杆菌菌株在软质小麦栽培中的效果
Pub Date : 2023-10-01 DOI: 10.3103/s1068367423050087

Abstract

The studies were conducted to identify the natural and climatic factors that can influence the effectiveness (efficacy) of B. subtilis strains with respect to morphometric indicators and soft wheat productivity as well as development of the diseases in 2017–2022. A response of Leningradka 6, k‑64900 spring wheat to the microbiological formulation Vitaplan, SP (titer of viable cells ×1011 CFU/g) and liquid culture (LC) of the B. subtilis strains VKM B‑2604D and B. subtilis VKM B‑2605D (at a 1 : 1 ratio with the titer of viable cells ×1010 CFU/mL). Wheat seeds were treated before sowing; the plants were subsequently sprayed three times during the growing season in the field conditions of the northwestern Russian Federation. The efficacy of bacterial strains in terms of the productivity and particularly harmful wheat diseases depended to a greater degree on the indicators of moisture availability during the growing season. This was confirmed by the results of multidimensional scaling as well the correlation and factor analyses of the indicators. The variant with Vitaplan, SP (DF, dry formulation) in F1 demonstrated high positive factor loadings for the precipitation amount in June, July, and August; HTC in July; relative humidity in June (0.73–0.93); plant stage; plant height; area of flag and preflag leaves; and weight of a vegetative portion of the plant (0.71–0.80). Using the LC B. subtilis VKM V‑2604D + B. subtilis VKM B‑2605D, high positive factor loadings were identified for the precipitation amount in June and August; HTC in July and August (0.71–0.88); productive tillering potential; root weight; spike length; spikelet number per spike; number and weight of grains per spike; and the biological and potential yield (0.71–0.85). The B. subtilis strains’ application improved biological and potential yield by 32.5 ± 7.2% and 24.3 ± 7.0%, respectively, and reduced the intensity of diseases’ progression (by 11.7 ± 1.6% for root rot and by 7.6 ± 0.7% for powdery mildew) as well as brown and yellow rust. The efficacy of the bacterial strains, however, significantly depended on the climatic factors of the wheat growing season.

摘要 研究旨在确定2017-2022年可影响枯草芽孢杆菌菌株在形态指标和软小麦产量以及病害发展方面的效力(功效)的自然和气候因素。列宁格勒6号k-64900春小麦对微生物制剂Vitaplan、SP(活细胞滴度×1011 CFU/g)和枯草芽孢杆菌菌株VKM B-2604D和枯草芽孢杆菌VKM B-2605D(活细胞滴度×1010 CFU/mL,比例为1:1)的液体培养物(LC)的反应。小麦种子在播种前进行了处理;随后在俄罗斯联邦西北部的田间条件下,在生长季节对植株进行了三次喷洒。细菌菌株对生产力和特别有害的小麦病害的功效在更大程度上取决于生长季节的水分供应指标。多维标度以及指标的相关性和因子分析结果证实了这一点。在 F1 中使用 Vitaplan、SP(DF,干制剂)的变体在以下方面表现出较高的正因子负荷:6 月、7 月和 8 月的降水量;7 月的 HTC;6 月的相对湿度(0.73-0.93);植株阶段;植株高度;旗叶和旗前叶面积;植株无性部分的重量(0.71-0.80)。利用 LC B. subtilis VKM V-2604D + B. subtilis VKM B-2605D,6 月和 8 月的降水量、7 月和 8 月的 HTC(0.71-0.88)、生产分蘖潜力、根重、穗长、每穗小穗数、每穗粒数和粒重、生物产量和潜在产量(0.71-0.85)的正因子载荷较高。应用枯草芽孢杆菌菌株后,生物产量和潜在产量分别提高了(32.5 ± 7.2% )和(24.3 ± 7.0% ),并降低了病害的发展程度(根腐病降低了(11.7 ± 1.6% ),白粉病降低了(7.6 ± 0.7% ))以及褐锈病和黄锈病。不过,细菌菌株的功效在很大程度上取决于小麦生长季节的气候因素。
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引用次数: 0
Experimental Modeling of the Influence of Mineral Nutrition Conditions on Spring Two-Row Barley Plants under Light Culture Conditions 光照培养条件下矿质营养条件对春季双行大麦植株影响的实验模型
Pub Date : 2023-10-01 DOI: 10.3103/s1068367423050142

Abstract

The purpose of the study was to identify the influence of mineral nutrition conditions on morphogenesis and absorption of macronutrients by spring barley plants of two varieties in the period from germination to earing under controlled conditions of light culture. The objects of the study were plants of two-row barley of the Takmak variety and the Salome variety. The plants were grown by hydroponics on expanded clay under controlled environmental conditions. Four variants of nutrient solutions were prepared for watering plants: variant one (control)—Knop solution of standard concentration; variant two—Knop solution was prepared with 50% concentration from its standard concentration; variant three—solution was prepared on the basis of Knop solution but with 50% of N concentration from its standard concentration; variant four—solution was prepared on the basis of Knop solution but with 25% of P concentration from its standard concentration. As a result, variants two and three showed a decrease in total bushiness by more than 30% compared to the control. The mass of plants in variants two and three turned out to be 50 and 35%, respectively, less than in the control. The decrease in plant mass was mainly due to a decrease in the mass of lateral shoots. The level of consumption of mineral elements, closely related to the composition of solutions, affected not so much the chemical composition of plant tissues as the amount of plant biomass, which manifested itself in high correlations between the consumption of mineral elements and the gross content of these elements in plants with rather weak links between consumption and the content of mineral elements in plants.

摘要 该研究旨在确定在光照培养的受控条件下,矿质营养条件对两个品种的春大麦植株从发芽到抽穗期间的形态发生和对大量营养元素的吸收的影响。研究对象是塔克马克(Takmak)品种和萨洛米(Salome)品种的双行大麦植株。这些植物在受控环境条件下通过水培法在膨胀粘土上生长。为浇灌植物配制了四种不同的营养液:变体一(对照)--标准浓度的克诺普溶液;变体二--克诺普溶液的浓度为标准浓度的 50%;变体三--溶液是在克诺普溶液的基础上配制的,但氮的浓度为标准浓度的 50%;变体四--溶液是在克诺普溶液的基础上配制的,但磷的浓度为标准浓度的 25%。因此,与对照组相比,变体二和变体三的总灌木量减少了 30%以上。变体二和变体三的植株质量分别比对照组减少了 50% 和 35%。植株质量下降的主要原因是侧芽的数量减少。矿物元素的消耗量与溶液成分密切相关,它对植物组织的化学成分影响不大,但对植物生物量的影响却很大,这表现在矿物元素的消耗量与植物体内这些元素的总含量之间有很高的相关性,而植物体内矿物元素的消耗量与含量之间的联系却很弱。
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引用次数: 0
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Russian Agricultural Sciences
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