scholarly journals Identification of the photosynthetic potential of spring oat varieties in the Lower Volga Re-gion

2021 ◽  
pp. 31-34
Author(s):  
Nina Alekseevna Naumova
Keyword(s):  
Reproductive Period ◽  
Climatic Conditions ◽  
Volga Region ◽  
Lower Volga Region ◽  
Net Productivity ◽  
Photosynthetic Productivity ◽  
Lower Volga ◽  
World Collection ◽  
Yield Values ◽  
Photosynthetic Potential

In 2017-2019, in the agro-climatic conditions of the Lower Volga region, the experience of studying spring oat varieties of different ecological and geographical origin from the world collection of VIR was laid, in order to determine their photosynthetic potential, and to identify varieties with high photosynthetic productivity. Over the years of research, the most adapted varieties of this crop were selected, their photosynthetic potential was determined, and the intensity of photosynthesis during the reproductive period of development (during the main growth phases) of spring oats in the conditions of the Lower Volga region was analyzed. On average, for 3 years of studying the collection varieties of spring oats in terms of the net productivity of photosynthesis, samples were noted: Myrtle, Athlete, Urs guara, Urs penca, p. 1. 3326 It was determined that with the growth of (FP) and (BPF), the yield of oats also increased. Since this indicator directly depends on the physiological and bioclimatic processes occurring in plants during ontogenesis. In the highest yield in 2017, it varied from 0.66 to 2.01 / ha. In 2018, the minimum yield values for all varieties were obtained from 0.51 t / ha of the Dookie 10 variety to 1.78 t / ha of the Mir variety. In the conditions of 2019, the yield variability by variety was from 0.60 t / ha to 1.94 t / ha. Thus, out of the 8 studied varieties, 5 were identified - p.1. 3326, Guara Urs, Urs foam, Athlete, Myrtle, as highly productive, and therefore the most resistant to abiotic stresses of the conditions of the Lower Volga region.

scholarly journals The Poa bulbosa L. Reproductive Strategy in the Steppe Phytocenoses of the Lower Volga Region

2020 ◽  
Vol 20 (4) ◽  
pp. 395-403
Author(s):  
Elmira I. Kaybeleva ◽  
◽  
Ekaterina A. Arkhipova ◽  
Olga I. Yudakova ◽  
Maxim Yu. Voronin ◽  
...  
Keyword(s):  
Reproductive Strategy ◽  
Growing Season ◽  
Reproductive Organs ◽  
Climatic Conditions ◽  
Volga Region ◽  
Herbarium Specimens ◽  
Mediterranean Flora ◽  
Lower Volga Region ◽  
Average Temperature ◽  
Lower Volga

Poa bulbosa L. is a native cereal of the European and Mediterranean flora and an invasive species in North America. The study of its reproductive strategy in different environmental and climatic conditions is important for the development of effective methods of containment and prevention of invasions. Plants of two coenopopulations were investigated embryologically. In addition, the morphology of reproductive organs was analyzed in 175 herbarium specimens collected in the flora of the Lower Volga region from 1919 to 2017. It was found that in the steppe phytocenoses of the Lower Volga region P. bulbosa reproduce mainly vegetatively by basal bulbs and pseudoviviparous bulblets. Rarely, seed mode reproduction in the form of facultative apomixis is realized. There was no dependence of the mode of reproduction (pseudovivipary / seed reproduction) on the date of growing season beginning and on the average temperature in the period from the beginning of the growing season to flowering. The effectiveness of pseudovivipary is low due to the aridity of the Lower Volga region climate. Bulblets germinate in inflorescences and then dry. This holds back the P. bulbosa wider distribution in the studied region.

Study of varieties of varieties of chickpea (Cicer arietinum L.) of the vir collection in the lower volga region

2021 ◽  
Author(s):  
N. Mukhatova Zh. ◽  
Keyword(s):  
Cicer Arietinum ◽  
Biochemical Composition ◽  
Volga Region ◽  
Lower Volga Region ◽  
Cicer Arietinum L ◽  
Lower Volga ◽  
World Collection ◽  
The World ◽  
Economically Valuable Traits

This article evaluates the economically valuable traits of 62 varieties of chickpea from the world collection of VIR. The differentiation of cultivars according to the size of vegetative, generative characters, as well as the biochemical composition of seeds has been carried out.

scholarly journals Biochemical evaluation of grain quality parameters of soybean varieties from the world collection of VIR in the conditions of the Lower Volga region

2021 ◽  
Vol 6 (48) ◽  
pp. 23-23
Author(s):  
Alexey Pominov ◽  
◽  
Albina Levkina ◽  
Vera Bychkova ◽  
Svetlana Guseva ◽  
...  
Keyword(s):  
Grain Quality ◽  
Quality Parameters ◽  
Volga Region ◽  
Lower Volga Region ◽  
Energy Value ◽  
Lower Volga ◽  
World Collection ◽  
The World ◽  
Gross Energy ◽  
Biochemical Evaluation

In 2019-2020, biochemical evaluation of grain quality indicators of soybean varieties from the VIR collection by main groups of nutrients under the conditions of the Lower Volga region was conducted. The differences and peculiarities of the gross energy value of grain were revealed according to the results of the research. The samples with high content of protein and fat in the grain were selected for further use in various directions of selection work on this crop. The coefficient of variation of biochemical grain parameters in soybean varieties varied between 2.7-8.7 %, which indicates its low variability. Keywords: SOYBEAN, BREEDING, WORLD COLLECTION VIR, BIOCHEMICAL EVALUATION, GRAIN QUALITY, GROSS ENERGY VALUE

scholarly journals Obtaining seeds of meadow clover in the Lower Volga region under irrigation

2021 ◽  
Vol 211 (08) ◽  
pp. 2-10
Author(s):  
Natal'ya Burceva ◽  
Natal'ya Molokanceva
Keyword(s):  
Water Consumption ◽  
Field Experiments ◽  
Volga Region ◽  
Total Water ◽  
Seed Productivity ◽  
Lower Volga Region ◽  
Total Water Consumption ◽  
Lower Volga ◽  
Photosynthetic Potential ◽  
Seed Yields

Abstract. The purpose of the experiment was to develop a technology for cultivating meadow clover under irrigation to obtain the planned seed yields in the conditions of the Lower Volga region. Research methods. Field experiments, records and observations were carried out in accordance with the generally accepted methods of experimental work. As a result of the research, it was found that the total water consumption of clover crops varied over the years of the herbage life and depended on the given pre-irrigation threshold of soil moisture. It was highest in the variants with the maintenance of the 70 % pre-flood threshold: 3.6–3.9, the lowest 2.7–3.1 thousand m3/ha in the variants with the 60 % humidity threshold. With the differentiation of humidity by the development phases, the total water consumption varied from 3.1 to 3.5 thousand m3/ha. The share of irrigation water in the structure of total water consumption was 60.6–72.7 % according to the experimental variants. The leaf area depended on the water and nutrient regimes of the soil: it reached the maximum values in the variants with a 70 % pre-irrigation threshold of humidity and fertilization. In comparison with the increase in biomass, the seed productivity of clover was less dependent on the photosynthetic potential and assimilation surface. The highest seed yields were formed in the variants with improved nutrition background and maintenance of a differentiated irrigation regime – 280–730 kg / ha. The accumulation of a significant amount of root mass by clover had a positive effect on improving the ecological state of the irrigated area: the water-physical properties of the soil improved, and nutrients accumulated in it. Scientific novelty. In the conditions of the Lower Volga region, the dependence of the seed productivity of clover on the availability of water and nutrients, on the age of the herbage, was revealed. Their optimal combination is determined for the production of seed yields at the level of 400–700 kg/ha.

scholarly journals THE BREEDING EVALUATION OF SOYBEAN GENE POOL FROM THE WORLD COLLECTION OF N.I. VAVILOV ALL-RUSSIAN INSTITUTE OF PLANT GENETIC RESOURCES IN THE CONDITIONS OF THE LOWER VOLGA REGION

2021 ◽  
Author(s):  
A.V. Pominov ◽  
◽  
E.A. Zhuk ◽  
D.P. Volkov ◽  
O.S. Nosko ◽  
...  
Keyword(s):  
Genetic Resources ◽  
Seed Weight ◽  
Plant Genetic Resources ◽  
Volga Region ◽  
Soybean Sample ◽  
Lower Volga Region ◽  
Lower Volga ◽  
World Collection ◽  
The World ◽  
Early Ripening

The article presents the evaluation results of soybean sample varieties of the world collection of N.I. Vavilov All-Russian Institute of Plant Genetic Resources by economic characters in the conditions of the Lower Volga region. We identified the most early ripening samples by the duration of the growth season and interstage periods. We noted the soybean sample varieties with the highest attachment of the lower bean, the maximum seed weight per plant, thousand-seed weight, and high biochemical seed qualities. We identified the genotypes with an optimal combination of the listed characteristics for further use in various areas of breeding work.

Comparative evaluation of breeding lines of sugar sorgo in competitive variety testing

2020 ◽  
Author(s):  
E. A. Vertikova ◽  
Keyword(s):  
Comparative Evaluation ◽  
The State ◽  
Volga Region ◽  
Lower Volga Region ◽  
Breeding Lines ◽  
Variety Trial ◽  
Lower Volga ◽  
Variety Testing

In a competitive variety trial, promising selection lines of sugar sorghum were studied in the Lower Volga region. Based on a set of signs, the best lines were identified, which are recommended for transfer to the State Variety Testing. Breeding lines, which are distinguished by high values of commercially valuable traits, can be used in planned crosses to create highly productive varieties and hybrids of sugar sorghum.

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