scholarly journals Study of elite black currant varieties selected at the Federal Agrarian Scientific Centre of the North-East

2021 ◽  
pp. 5-10
Author(s):  
N. S. Vakhrusheva ◽  
T. I. Saltykova ◽  
A. P. Sofronov
Keyword(s):  
Powdery Mildew ◽  
High Resistance ◽  
Control Sample ◽  
Black Currant ◽  
High Productivity ◽  
North East ◽  
The North ◽  
Good Taste ◽  
Negative Effect ◽  
Region 10

Elite varieties of black currant selected at the Federal Agrarian Scientific Centre of the North-East were studied with the purpose of identifying samples with an optimal combination of high productivity, large fruit, good taste, resistance to big bud mite and powdery mildew. The studies were carried out in 2015–2019 on a site located in the central agro-climatic zone of the Kirov region. 10 elite black currant varieties of 2013 planting were investigated. The varieties of Arkadiya and Vologda were used as control. The counts and observations were carried out using conventional methods. The combination of high productivity, its sustainability and high self-fertility was noted in varieties 71-2-07, 65-1-07 and 64-4-07. In terms of resistance to the pest, two highly resistant samples 71-2-07 and 65-1-07 were identified, which showed no signs of damage during the study period. The damage by big bud mite remained low across the entire experimental site. The average negative effect of big bud mite on the yield was found (r = -0.48). In the following 7 elite forms — 71-2-07, 65-1-07, 70-5-07, 46-1-07, 12-1-07, 15-1-07, 20-1-07 (70.0 % of the studied material), the maximum degree of damage by powdery mildew did not exceed 1.0 points, which indicates their high resistance. The combination of high resistance to big bud mites and resistance to powdery mildew was found in varieties 71-2-07 and 65-1-07. During the study period, 9 elite black currant varieties produced large-fruited berries. Out of these 9 forms, 3 (71-2-07, 64-4-07, 12-1-07) showed significantly higher values of this indicator compared to the Vologda control. Sample 27-1-07 was distinguished by a combination of large fruit, good taste and low acidity, as well as by high contents of ascorbic acid and dry matter. Sources of economically valuable traits were identified in 2 samples: 65-1-07 having a combination of high productivity, large fruit, high self-fertility, good taste, resistance to big bud mites and powdery mildew; 64-4-07 having a combination of high productivity, large fruit and high self-fertility. These genotypes can be recommended as a starting material for further breeding. On the basis of the results obtained, the Ariel variety (71-2-07) was forwarded to the State Variety Testing in 2020.

scholarly journals 16S rRNA-Based Identification of a Glucan-Hyperproducing Weissella confusa

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Shraddha Shukla ◽  
Arun Goyal
Keyword(s):  
Culture Medium ◽  
High Capacity ◽  
Static Condition ◽  
High Productivity ◽  
North East India ◽  
North East ◽  
The North ◽  
Industrial Use ◽  
Polymerase Chain ◽  
Weissella Confusa

A gram-positive, nonmotile, irregular, short, rod-shaped new strain of Weissella confusa bacterium was isolated from fermented cabbage. The isolate was physiologically and biochemically characterised. The 16S rDNA was amplified by polymerase chain reaction (PCR). The isolate was identified as Weissella confusa (GenBank accession number: GU138518.1) based on nucleotide homology and phylogenetic analysis. The isolate produces glucansucrase when grown in sucrose-supplemented culture medium which catalyses glucan formation. This novel isolate possesses high capacity of industrial use due to its high productivity of glucan (34 mg/mL) as compared to other strains reported. The optimum temperature for glucansucrase production was 25°C. The shaking condition gave an enzyme activity of 6.1 U/mL which was 1.5 times higher than that given by static condition (4.1 U/mL). The temperature 35°C, pH 5.4, and ionic strength 10–20 mM were optimum for enzyme assay. This investigation unraveled the abundance of industrially valuable microflora of the north east India.

scholarly journals The socio-economic determinants of social capital and the mediating effect of history: Making Democracy Work revisited

2013 ◽  
Vol 54 (1) ◽  
pp. 48-73 ◽  
Author(s):  
Emanuele Ferragina
Keyword(s):  
Social Capital ◽  
Collective Action ◽  
Middle Ages ◽  
Historical Analysis ◽  
Mediating Effect ◽  
The South ◽  
Economic Determinants ◽  
North East ◽  
The North ◽  
Negative Effect

Putnam argued that the different levels of social capital between the North and the South of Italy originated in the Middle Ages. In the North of Italy, the existence of a dense network of medieval towns gave rise to horizontal ties and collective action. Conversely, in the South of Italy, the authoritarian Norman rule generated hierarchical relationships and the absence of collective action. This article proposes an alternative explanation for the lack of social capital in the South of Italy using a comparative perspective. The analysis is undertaken in two steps: 1) testing the socio-economic determinants of social capital in 85 European regions; 2) performing a comparative historical analysis between deviant – that is, South of Italy and Wallonia – and regular – that is, North East of Italy and Flanders – cases. These cases are selected by looking at the residual of the regression model. The results suggest that medieval history does not explain the lack of social capital in the South of Italy. On the contrary, the historical legacy mitigates the negative effect of inequitable income distribution, low labour market participation and weak national cohesion on social capital.

scholarly journals SOURCES OF BARLEY RESISTANCE TO HELMINTHOSPORIOTIC DISEASES AND THEIR USE IN THE NORTH-EAST FARC

2020 ◽  
pp. 76-83
Author(s):  
Т. К. Sheshegova ◽  
I. N. Shchennikova
Keyword(s):  
Spring Barley ◽  
Stability Index ◽  
Microbial Interactions ◽  
High Yield ◽  
Regression Equations ◽  
High Productivity ◽  
North East ◽  
Slow Rusting ◽  
The North ◽  
Period 2

The paper explores 70 samples of spring barley from the collection of WIR under conditions of rather rigid natural infectious helminthosporioses (striped, reticulated and dark brown spotting) in FARC of the North-East in 2018-2019. The spotting was investigated 4-5 times during plants ontogenesis every 10-12 days since the phase 29 on the Cadox scale. The methodology suggested by O.S. Afanasenko (2005) was used to assess the diseases. The nature of vegetative-microbial interactions was evaluated by SCDP (square under the curve of disease progress) and IS (stability index) indicators. During immunological experiment, the authors observed 11 samples resistant to dark brown spotting with lesion rate 10.0-13.0%, SCDP parameters equal 167-223, DUT was 0.18-0.25; 18 samples resistant to reticular spotting (6.0-10.0%, PCRB - 53-103, DUT - 0.18-0.35), and 29 samples characterized by immunity and high resistance to stripe spotting (0-5.0%, SCDP - 10-75). IS - 0.01-0.09). Only 4 samples (Makbo, Kalkul, Buyan and Forward) are characterized by group non-specific resistance to reticulate and dark brown spotting and striate immunity. The longest occurrence period (2-7 days) of dark brown spotting was observed in 8 samples, and reticulum spotting (2-13 days) - in 16 samples. The paper finds out that NCL 95098 (Argentina) had the relatively long occurrence period in terms of dark brown spotting, and varieties from Afghanistan (k-5983) and China (k-2929) to reticulate spotting. Badiory, Makbo, Rodos, and Buyan varieties have equal dynamics of both spotting and slow rusting of diseases in ontogenesis. There is a weak (r = -0.33 - reticulate) and medium (r = -0.58 - dark brown) negative correlation between the latent period and the defeat. The regression equations (y = -0,6071x+6,8571; R2 = 0,917 - dark brown; y = -0,3941x+11,35; R2 = 0,733 - reticulated) show that from infection to the first disease symptoms, their daily increase in trend is 0,61 and 0,39%. Kalkul, NCL 95098, Badioryi and Buyan varieties are seen as effective promising for selection programs to produce high yield adaptive varieties under the conditions of the region. Apart from stability, they are distinguished by the number of productive stems, long, well-grained ears and high productivity.

PRELIMINARY ASSESSMENT OF A BLACK CURRANT NEW HYBRID MATERIAL FOR RESISTANCE TO BIOTIC FACTORS

1970 ◽  
pp. 37-39
Author(s):  
А. Yu. Bakhotskaya ◽  
S. D. Knyazev
Keyword(s):  
Powdery Mildew ◽  
High Resistance ◽  
Selection Process ◽  
Cultivated Plants ◽  
Biotic Factors ◽  
Preliminary Assessment ◽  
Black Currant ◽  
Speed Up ◽  
Derivatives Of

 Resistance to diseases and pests is one of the main tasks of a breeder when creating varieties of cultivated plants. On perennial plants, which include black currants, diseases have a significant impact on the quantity and quality of the formed yield, as well as on the laying of the subsequent yield. Constant screening of new breeding material allows not only to select and isolate promising highly resistant forms at the early stages of ontogenesis, but also, as a result, to speed up the entire selection process of creating immune varieties. As a result of our research, we found that the bulk of the studied hybrid seedlings in 2019-2020 were resistant to American powdery mildew and columnar rust. High resistance to American powdery mildew is characteristic of derivatives of glutinous currant and the Scandinavian subspecies of black currant. Also, the derivatives of glutinous currant are characterized by high resistance to columnar rust.

scholarly journals Perspectives of barley breeding for the conditions of the Volgo-Vyatka region (analytical review)

2021 ◽  
Vol 22 (1) ◽  
pp. 21-31
Author(s):  
I. N. Shchennikova ◽  
L. P. Kokina
Keyword(s):  
Grain Quality ◽  
Agricultural Research ◽  
Raw Materials ◽  
Specific Weight ◽  
High Yield ◽  
Forage Production ◽  
High Productivity ◽  
North East ◽  
The North ◽  
Key Factor

The article is devoted to the analysis of the structure of sown areas and characteristics of barley varieties zoned in the Kirov region for 2020. In 2019 in the Kirov region the varieties cultivated in production for more than 20 years had the largest specific weight – 50.1 % of the acreage occupied with barley. Those cultivated for more than 10 years had 36.1 %; from 5 to 10 years – 13.8 %. Certified sowings varied from year to year in percentage to the occupied area. There is a gradual decrease in unsorted sowings of barley from 3.0 thousand hectares in 2017 up to 1.18 thousand hectares in 2019. The areas sown with barley varieties bred in Federal Agricultural Research Center of the North East named N. V. Rudnitsky (FARC North-East) in the structure of sown areas in 2019 were from 21.5 % in the southern zone up to 57.8 % in the northern zone of the Kirov region. For the whole of the region the greatest distribution was recorded among Belarussian cultivars Zazersky 85 (39.3 % of the areas sown with barley), and cultivars bred in FARC North-East: Ecolog (10.8 %), Rodnik Prikamiya (7.1 %) and Novichok (7.0 %). In northern districts of the region the ratio changed: Ecolog – 27.2 %, Rodnik Prikamiya – 18.9 %, Novichok – 9.0 %, Zazersky 85 – 7.7 %. High productivity (4.22-4.79 t/ha in average), resistance to lodging and diseases characterize the zoned cultivars. The main disadvantage of barley assortment offered for zoning is the lack of stable yield and differences in duration of the growing season among the varieties. All cultivars belong to the group of mid-season, except for the mid-late cultivar Zazersky 85. The region is short of the sources of high-quality raw materials for forage production; only 30.7 % of all assortment of barley in the region are presented by cultivars with high grain quality (Ecolog, Belgorodsky 100, Rodnik Prikamiya and Pamyati Rodinoy). Currently, the trend for developing high-yield early, resistant to lodging and diseases barley varieties of high grain quality is to become the key factor in breeding work.

scholarly journals The assessment of hybrid material of black currant of Federal Agrarian Scientific Center of the North-East breeding according to the complex of economically valuable features

2020 ◽  
pp. 5-11
Author(s):  
T. I. Saltykova ◽  
N. S. Vakhrusheva ◽  
A. P. Sofronov
Keyword(s):  
Hybrid Material ◽  
Agricultural Research ◽  
Maximum Yield ◽  
High Yield ◽  
Parental Form ◽  
Black Currant ◽  
Early Maturity ◽  
North East ◽  
The North ◽  
Good Productivity

The aim of research was to evaluate hybrid black currant families on productivity, large-fruitiness, flavor, resistance to currant gall mite and American mildew and to reveal the best ones in conditions of Kirov region. The studies were held in the experimental orchard of Federal Agricultural Research Center (FARC) of the North-East (Kirov) in 2010-2017. The object of the research was the hybrid of black currant breeding of FARC of the North-East on a plantation established in 2013. The scheme of planting was 3×1 m. 26 hybrid families (453 seedlings) obtained as a result of hybridization in 2010 were evaluated. Observations and recordings were held according to the general methods. For creating hybrid material of black currant the varieties Sapphire, Shagane, Arcadia, Mulatka and forms – as sources of economically valuable features obtained in conditions of Kirov region were used. According to the results of the research, the combinations of hybridization with the maximum yield of hybrid seedlings with valuable features which show an interest for the further breeding were revealed: 41-3-07×Sapphire – early maturity and good productivity (75.6-91.1 %); 10-1-07×Arcadia – large-fruitiness (50.0-66.7 %) and nice flavor (61.5 %); 57-5-07×44-8-96 – with resistance to currant gall mind (100.0 %) and mildew (42.9 %); 69-5-07×Shagane – good productivity (50.0-92.8 %); 102-1-07×Alexandrina, 25-4-07×Mulatka, 99-3-07×34-4-96 – with resistance to currant gall mind (100.0 %). For the further research 12 selected forms of black currant with economically valuable features have been identified, replicated and planted at the site of primary studying. The Sapphire variety became the best parent form in evaluating breeding material. In crossing combinations with its involvement the maximal amount of selected seedlings with economically valuable features (8 from 12 forms) were revealed. In crossing combinations, where the Shagane variety was used as a male parental form, a high yield of productive seedlings was noted.

scholarly journals The Theory of Island Biogeography on the Hawaiki Archipelago

2021 ◽  
Author(s):  
◽  
Khoi Dinh
Keyword(s):  
Exotic Species ◽  
Island Biogeography ◽  
Native Species ◽  
Physical Geography ◽  
Geographical Information ◽  
Similar Species ◽  
North East ◽  
The North ◽  
Theory Of Island Biogeography ◽  
Negative Effect

<p>This thesis addresses MacArthur and Wilson‟s Theory of Island Biogeography (1967) on a set of islands around the north-east coast of the North Island of New Zealand. The flora species lists from these islands were obtained from both published and unpublished island surveys whilst Geographical Information Systems (GIS) techniques were utilised in order to calculate the physical geography of islands.  These islands were an ideal study site for such research because they display natural gradients in both physical geography as well as native and exotic species richness. The literature on the Theory of Island Biogeography has yet to comprehensively understand the differences between the patterns of exotic richness and native richness. Furthermore, the importance of studies on exotics species is increasingly relevant given the negative effect they have had on native communities worldwide.  The results of my research illustrated that there were similar species-area and species-isolation relationships between exotic and native species. These two relationships were also consistent with what is expected under classical island biogeography principles. Interestingly however, I found that distance from the mainland had a stronger negative effect on exotics species. There were a significantly lower proportion of exotics with increasing isolation.  This result has applicable outcomes for conservation management on the Hawaiki archipelago. I suggested that weeding effort focus on larger islands and in particular the islands closer to the mainland. Globally, the biogeographical patterns of exotic species are still poorly examined. With insights from this study and other similar research the Theory of Island Biogeography may be an informative approach to dealing with the ominous threat of exotic species.</p>

scholarly journals Prevalence and Antibiotic Resistance Patterns ofCampylobacterspp. Isolated from Broiler Chickens in the North of Tunisia

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Manel Gharbi ◽  
Awatef Béjaoui ◽  
Cherif Ben Hamda ◽  
Ahlem Jouini ◽  
Kais Ghedira ◽  
...  
Keyword(s):  
High Resistance ◽  
Antimicrobial Susceptibility ◽  
Broiler Chickens ◽  
Geographic Origin ◽  
Infection Level ◽  
North East ◽  
The North ◽  
Total Prevalence ◽  
Resistance Rates ◽  
Pcr Targeting

The aim of the current study is to assess the prevalence ofCampylobacterinfection in broiler chickens, raised in intensive production conditions, and to evaluate the antimicrobial susceptibility of recoveredCampylobacterisolates. A total of 590 cloacal swab samples were taken from 13 broiler chicken flocks in the North East of Tunisia. All samples were tested for the presence of thermophilicCampylobacterby culture and PCR, targeting themapAandceuEgenes, respectively. Susceptibility to antimicrobial drugs was tested against 8 antibiotics. Prevalence ofCampylobacterinfection, relationship with geographic origins and seasons, antimicrobial resistance rates and patterns were analyzed. Total prevalence ofCampylobacterinfection in broiler flocks was in the range of 22.4%, with a predominance ofC. jejuni(68.9%), followed byC. coli(31.1%). Positive association was highlighted between the infection level and the season (P< 0.001), but no link was emphasized considering the geographic origin. Antimicrobial susceptibility testing revealed very high resistance rates detected against macrolide, tetracycline, quinolones, and chloramphenicol, ranging from 88.6% to 100%. Lower resistance prevalence was noticed forβ-lactams (47% and 61.4%) and gentamicin (12.9%). 17 R-type patterns were observed, and a common pattern was found in 30.3% of isolates. This study provides updates and novel data on the prevalence and the AMR of broiler campylobacters in Tunisia, revealing the occurrence of high resistance to several antibiotics and emphasizing the requirement of better surveillance and careful regulation of antimicrobials use.

scholarly journals ANALYSIS OF THE STATUS OF PRELIMINARY GRAIN CLEANING IN FARMS OF THE NORTH-WESTERN REGION OF THE RUSSIAN FEDERATION AND PROSPECTS FOR IMPROVEMENT

2020 ◽  
Vol 15 (2) ◽  
pp. 82-86
Author(s):  
M. Volhonov ◽  
Igor' Zimin ◽  
Yuriy Ostrovskiy
Keyword(s):  
Moisture Content ◽  
Russian Federation ◽  
Western Region ◽  
Efficient Operation ◽  
High Productivity ◽  
Technological Line ◽  
The North ◽  
Negative Effect ◽  
The Russian Federation ◽  
North Western

One of the first operations in the technology of post-harvest processing of a combine heap is preliminary cleaning, which makes it possible to increase the flowability of the material and reduce the cost of drying. In the farms of the North-Western region of the Russian Federation, the grain heap coming from the fields to the processing lines of grain-cleaning and drying complexes is characterized by increased grain mass contamination (15 ... 20%) and a multicomponent composition of trash, which, along with an increase in the moisture content of the grain heap, has a negative effect on the efficiency of the pre-cleaning machines. At grain cleaning and drying points, machines of various designs are used for preliminary grain cleaning. In most cases, they are not intended for separating small weed fractions and separating feed grain, when cleaning a heap with a moisture content of 26 ... 30% or more, their productivity decreases 1.5 ... 2 times. As a result, the wellness of the grain mass is sharply reduced, which in turn reduces the efficiency of storage bins, dryers, as well as machines for primary and secondary grain cleaning. Fundamentally new approaches to the development of designs for grain pre-cleaning machines are required. They must have a high productivity for the coordinated and efficient operation of the entire technological line, as well as carry out preliminary cleaning of grain with its simultaneous separation into feed and seed fractions. Heap cleaners are needed that are capable of separating clean forage from the grain heap already at the first operation, so that it does not need to be additionally cleaned of large weeds and sand, but only needs to be dried on a separate technological line. The pre-cleaner must have a developed air-sieve system and have perfect under-sowing sieves to separate small weed seeds

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