scholarly journals Molecular markers in population genetics and breeding of cultivated plants

Author(s):  
Юрий Чесноков ◽  
Yuriy Chesnokov ◽  
Наталья Кочерина ◽  
Natalia Kocherina ◽  
Владимир Косолапов ◽  
...  

Information on the use of molecular and traditional genetic markers in population genetics and breeding of agricultural plants is presented. An assessment of the level of diversity in populations is given using different types of markers, both at the level of alleles and at the level of individual nucleotides, including the measurement of differentiation within different marker systems. The relationship between molecular divergence, phenotypic divergence and co-origin described. The factors affecting the reliable determination of quantitative trait loci highlighted. Special attention is paid to the mapping of Mendelian genes. Special attention paid to the physiological and biochemical characteristics and their role in the manifestation and identification of economically valuable properties of cultivated plant species. Information is provided on the main hardware and software commonly used to conduct statistical calculations and establish a disequilibrium of marker/trait linking in populations. The purpose of the main computer programs, the most widely used for genetic mapping and establishing a marker / trait association, is briefly discussed.

1997 ◽  
Vol 60 (5) ◽  
pp. 505-509 ◽  
Author(s):  
K. JOHANNA BJORKROTH ◽  
HANNU J. KORKEALA

Spoilage characterized by bulging as a result of gas formation in bottled ketchup was studied, Samples produced microbial growth on MRS and Rogosa selective Lactobacillus agar. Seventy randomly selected isolates typed by using restriction endonuclease (ClaI, EcoRI, HindIII) analysis were found to have identical DNA fragment patterns in gel electrophoresis. The strain was identified as Lactobacillus fructivorans using morphological, physiological and biochemical characteristics, combined with the information obtained from ribotyping. Factors affecting growth and survival of this L. fructivorans strain in ketchup production were also studied. An L. fructivorans count of 105 CFU/g resulted in spoilage of inoculated ketchup samples. Spoilage occurred only in samples incubated at 15 to 30°C. The L. fructivorans implicated in causing spoilage demonstrated heat resistance with a D value of 1.2 min at 65°C. The strain did not show resistance to alkaline active chloride-containing detergent sanitizer; alkyldimethylbenzylammonium chloride and alkyldimethylethylbenzylammonium chloride-containing sanitizer were also found to be effective antimicrobial agents.


1950 ◽  
Vol 31 (2) ◽  
pp. 51-55 ◽  
Author(s):  
Robert G. Fleagle

The need for reliable determination of the temperature of the air very near the ground and the difficulties inherent in measurement of this quantity by the ordinary indirect methods are pointed out. It is suggested that the dependence of the speed of light on air density provides a convenient method for the determination of the temperature near the ground by direct measurement of the lapse rate, and evidence is given from other papers to show that this is feasible where the vertical gradient of humidity is not great. The relationship between apparent elevation and lapse rates of temperature and vapor pressure is derived, and the relationship is illustrated by the results of computations.


2014 ◽  
Vol 513-517 ◽  
pp. 3269-3272
Author(s):  
Jing Min Wang ◽  
Yan Mei Li ◽  
Yi Ping Zhu

Project invested with a type of Energy Performance Contracting has many stakeholders and its structure is complex. Risk factors produced from it are so widespread that its hard to control the risks of EPC project. Analyzing EPC project risks with interpretive structural model, solving reachability matrix and establishing Interpretive Structural Model to identify the relationship between factors and the surface, middle and deep risk factors affecting EPC project based on determination of risks, which provides a reference for policies and measures formulation of the relevant departments.


HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 456A-456
Author(s):  
Paul R. Fantz ◽  
Donglin Zhang

Horticultural Science in the past quarter of a century has been shifting to increased emphasis on ornamental plants due to the growth of the modern green industry. Numerous species are being introduced into the exterior and interior landscapes. For popular species, the cultivar, as defined by the International Code of Nomenclature for Cultivated Plants (ICNCP), has become the basic taxon of cultivated plants. Named ornamental plant cultivars are rising at a rapid rate creating identification and segregation problems in the landscape industry, nurseries, botanic gardens, arboreta, and breeding programs. Government regulations and legal issues are beginning to infringe as solutions to the problems. There is a critical need existing for taxonomic research on ornamental cultivars utilizing classical morphological analysis supplemented with modern biotechnological techniques (e.g., anatomical, chemical, cytological, DNA, Sem analysis). Taxonomic research on existing and newer cultivars can provide quantitative botanical descriptions, keys of segregation, correct identification, determination of correct names and synonymy, improved cultivar documentation, and grouping of similar cultivars in large complexes. The taxonomic research is basic science that has immediate applied application within the horticultural society, and results should be published in the journals of ASHS.


2019 ◽  
Vol 17 (9) ◽  
Author(s):  
Puvaneswary Thanaraju ◽  
Puteri Ameera Mentaza Khan ◽  
Nur Hafizah Juhari ◽  
Sheelah Sivanathan ◽  
Nurhayati Md Khair

The Malaysian Property Market Report 2016 reported that Malaysian properties transactions were down, office occupancies were down, and simultaneously unsold units were up. Almost two thirds of the total homes that developers launched remained unsold, comprising 90,491 units at the end of 2016 including of those completed, under construction, and not constructed. In recent years, the declining phenomenon in the property market is getting worse apparently. The reason behind this situation is mainly due to the rising cost of living which causes the purchasing power to be weakened; therefore, to buy a property or even goods for daily use has become difficult as the overall spending power of the Malaysians has decreased. Determining the important factors that impact upon the decision making of the house purchasing process could develop a better understanding for both buyers and home providers which eventually could avoid the ‘unsold’ properties scenario in the market. Hence, the objective of this research is to evaluate the relationship between the three main factors identified which are financial, location, and neighbourhood towards the housing preferences of homebuyers in Kuala Lumpur. A total of 100 respondents, ranged between 25 to 34 years old, responded to the survey, and the results were derived using the multiple regression analysis. The results favour the locational factors that contribute significantly to the determination of a buyer’s preferences when purchasing a house.


2021 ◽  
Author(s):  
Nguyen Quang LInh

Abstract In this study, 18 strains of Vibrio bacteria were identified from 27 samples of Red drum fish (Sciaenops ocellatus) suffering from the haemorrhagic disease from cage culture in Vietnam. The bacterial strains were identified with the 16S rRNA sequencing method and checked for morphological, physiological, and biochemical characteristics by using the API 20E KIT. Twelve strains of V. alginolyticus, three strains of V. fluvialis, and three strains of V. orientalis were recorded. All Vibrio strains have gene similarities with those on the gene bank ranging from 98 to 100%. The biochemical characteristics of these 18 isolates were similar. These bacteria are susceptible to tetracycline and doxycycline and entirely resistant to ampicillin, amoxicillin, and erythromycin.


2018 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Nurhasanah Nurhasanah ◽  
Nenie Adriati Lambung

The purpose of this study is to describe and analyze the relationship between the DPRD and the City Government of Palangka Raya in the preparation and determination of the Regional Budget and to describe and analyze the factors that influence the relationship between the DPRD and the City Government of Palangka Raya in the preparation and stipulation of APBD regulations. This study uses descriptive qualitative research methods. The types and sources of data chosen by researchers are primary data and secondary data. Data collection techniques used to obtain information are interviews and documentation. The results showed that the pattern of interaction between the executive and the legislature in the discussion of the Regional Expenditure Budget (APBD) in Palangka Raya City in 2018, starting from the stages of KUA and PPAS formulation and the RAPBD discussion until the budget approval stage was always colored by several phenomena of interaction between the executive and legislative to carry out the functions of authority to master each other, dominate. In determining budget policy, it was found that the relationship between the DPRD and the City Government of Palangka Raya in the preparation and stipulation of the Regional Budget was still conducive so that it did not lead to deadlock in the formulation and determination of the Palangka Raya City Budget in 2018. Factors affecting the interaction of DPRD and Palangka City Government Raya in the preparation and determination of APBD is the existence of a special mission to negotiate in the form of non-agenda, bargaining with executives to gain the interests of the legislature, a vision that may be different in running a good governance (transparent, democratic, good, fair, responsible and objective ) and equalize the same understanding in responding to every issue and scene in formulating local regulations on APBD and their implementation.


2017 ◽  
Vol 64 (s1) ◽  
pp. 1-13 ◽  
Author(s):  
Lina Pilelienė ◽  
Viktorija Grigaliūnaitė

Abstract Advertising spokesperson is one of the undeniably important factors affecting advertising effectiveness. However, advertising spokesperson has to have some particular features to be effective. Various previous researches resulted in determination of different features of advertising spokesperson and their effectiveness; i.e. type of a spokesperson (celebrity vs. a regular person); gender and race of a spokesperson; etc. were found to have an impact on the spokesperson’s effectiveness. However, the research on the impact of shooting color temperature on its effectiveness is still scarce. Moreover, an assumption can be made that color temperature might cause a different effect depending on advertising spokesperson’s gender. The aim of this paper is to fill this gap by analyzing the relationship between spokesperson’s gender and advertising color temperature in a framework of advertising effectiveness. Neuromarketing research methods were applied to meet the aim and to determine the guidelines for its usage in advertising.


2021 ◽  
Author(s):  
Ke Wang ◽  
Zhu-yun Yan ◽  
Yun-tong Ma ◽  
Bo Li ◽  
Wei Wang ◽  
...  

Abstract Background: Enzyme activities play a very important role in metabolism. Carbon (C) and nitrogen (N) are the two most basic elements for plant growth and development, and their mutual coupling makes C:N become an important index to explore plant element allocation and adaptation strategies. Although the key enzymes activity in carbon and nitrogen metabolism, and defense enzymes are often used to indexes of the physiological and biochemical characteristics of plants, the relationship between them and biomass still lacks understanding. In this paper, under the control condition, the biomass and 18 kinds of physiological and biochemical indexes were obtained through 24 groups experiments of the regenerated seedlings of Salvia miltiorrhiza by 9 endophytic fungi strains grafted. Results: The data were analyzed by descriptive statistical analysis, Lasso variable screening analysis and MLP neural network regression analysis. Results show that many physiological and biochemical indexes are related to biomass, and glutamine synthetase ( GS ),glutamate synthase ( GLS ), glutamate dehydroge nase ( GDH ), peroxidases (POD), catalase (CAT), soluble protein are the key factors which affect the biomass synthesis of Salvia miltiorrhiza . Conclusion: In this paper, it discusses the relationship between physiological and biochemical indexes and biomass in a comprehensive and systematic way by the framework of "Build-Design-Calculate-Test". Through rigorous logical reasoning process, the factors affecting the growth of Salvia miltiorrhiza are selected, and the mathematical model is established. It also provides a powerful tool for the comprehensive and systematic study of plant growth and the synthesis of effective components.


Author(s):  
Olaniyi Segun Ojo ◽  
Fidelis Monday Idieunmah

Timbers are used as structural members in various areas of construction works. Hence the knowledge of properties of wood especially strength and factors affecting the strength of timber is very important. This study was conducted to determine the effect of age on the structural strength of timber. The wood species studied are Iroko (Chlorophora excelsa), Nigerian Mahogany (Khaya anthotheca) and Ita (Celtis mildbraedii). The age of timber were determined by counting the number of annual growth rings, which is the combination of early wood and late wood and samples of different ages of timber, were obtained by personal visit to the forest where fresh timber was cut. The samples obtained were machined and trimmed to standard size with respect to BS 373 1957 (imprint 1999), 20mm X 20mm X 60mm for the determination of maximum compressive strength parallel to grain (MCS//), 20mm X 20mm X 20mm for static shear strength and 20mm X 20mm X 300mm to determine the bending strength. The samples obtained were carried to the laboratory at Forestry Research Institutes of Nigeria (FRIN) in Ibadan for testing using Instron Tensiometer machine. SPSS was used to analyze the relationship between strength and age of timber. The result obtained showed that the maximum compressive and Shear strength for Iroko, were at 120years, whereas it has maximum bending strength at 70years. Nigeria Mahogany and Ita has maximum compressive, bending and shear strength at 80 years, and 70 years respectively and among the three timber samples Ita is better in compression and shear strength and iroko is better in bending strength. It was concluded that age of timber has significant influence on timber strength


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