scholarly journals Intra- and Inter-Specific Crosses among Centaurea aspera L. (Asteraceae) Polyploid Relatives—Influences on Distribution and Polyploid Establishment

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1142 ◽  
Author(s):  
Alfonso Garmendia ◽  
María Ferriol ◽  
David Benavent ◽  
P. Pablo Ferrer-Gallego ◽  
Hugo Merle
Keyword(s):  
Mating System ◽  
Ploidy Level ◽  
Competitive Advantages ◽  
Polyploid Complex ◽  
Specific Hybridization ◽  
Evolutionary Advantage ◽  
Postzygotic Barriers ◽  
Exclusion Effect ◽  
Sterile Hybrids

How polyploids become established is a long-debated question, especially for autopolyploids that seem to have no evolutionary advantage over their progenitors. The Centaurea aspera polyploid complex includes diploid C. aspera and two related tetraploids C. seridis and C. gentilii. Our purpose was to study the mating system among these three taxa and to analyze its influence on polyploid establishment. The distribution and ploidy level of the Moroccan populations, and forced intra- and inter-specific crosses were assessed. Allotetraploid C. seridis produced more cypselae per capitulum in the intra-specific crosses. It is a bigger plant and autogamous, and previous studies indicated that selfing forces the asymmetric formation of sterile hybrids. All these characteristics help C. seridis to avoid the minority-cytotype-exclusion effect and become established. Inter-specific hybridization was possible between C. aspera and C. gentilii, and with the symmetric formation of hybrids. However, 49% of the hybrid cypselae were empty, which probably reveals postzygotic barriers. Autotetraploid C. gentilii produced the same number of cypselae per capitulum as those of the diploid parental, has an indistinguishable field phenotype, is allogamous, and symmetrically produces hybrids. Therefore, C. gentilii does not seem to have the same competitive advantages as those of C. seridis.

scholarly journals Mating System and Hybridity in Eucalyptus pauciflora

1977 ◽  
Vol 30 (4) ◽  
pp. 337 ◽  
Author(s):  
MA Phillips ◽  
AHD Brown
Keyword(s):  
Mating System ◽  
Outcrossing Rate ◽  
Seedling Stage ◽  
Average Heterozygosity ◽  
Evolutionary Advantage ◽  
Allozyme Polymorphisms ◽  
Self Fertilization

Allozyme polymorphisms at four loci expressed in seeds, and three other loci expressed in seedlings, were used to determine the outcrossing rate in three natural subalpine populations of snow gum (E. paucijlora). Based on the seed loci data, an estimated 37 % of seed was derived from self-fertilization and 63 % from random outcrossing. In the most elevated population the estimate after germination was similar. However, at lower elevations the frequency of effective self-fertilization estimated at the seedling stage was only 16 %. The less elevated populations also showed a greater average heterozygosity and a larger increase in heterozygosity in the adult over the progeny stages. Heterosis apparently operated differentially in these populations-it was more intense at the lower altitudes. Selection in favour of outcrossed individuals may be an important factor in checking the spread through the population of genes which promote self-fertilization, and which would otherwise enjoy an evolutionary advantage.

scholarly journals Postzygotic isolation varies by ploidy level within a polyploid complex

2016 ◽  
Vol 213 (1) ◽  
pp. 404-412 ◽  
Author(s):  
Brittany L. Sutherland ◽  
Laura F. Galloway
Keyword(s):  
Ploidy Level ◽  
Polyploid Complex ◽  
Postzygotic Isolation

Socio-cultural Resource for Kazakhstan Modernization

2012 ◽  
pp. 74-82 ◽  
Author(s):  
A. Stavinskaya ◽  
E. Nikishina
Keyword(s):  
Social Capital ◽  
Cultural Capital ◽  
Competitive Advantages ◽  
Institutional Reforms ◽  
Cultural Resource ◽  
Bonding Social Capital ◽  
Social And Cultural Capital ◽  
The Social ◽  
Social And Economic Development ◽  
Cultural Features

The opportunities of the competitive advantages use of the social and cultural capital for pro-modernization institutional reforms in Kazakhstan are considered in the article. Based on a number of sociological surveys national-specific features of the cultural capital are marked, which can encourage the country's social and economic development: bonding social capital, propensity for taking executive positions (not ordinary), mobility and adaptability (characteristic for nomad cultures), high value of education. The analysis shows the resources of the productive use of these socio-cultural features.

Russian Banking Sector: Issues of Consolidation and Corporate Governance

2005 ◽  
pp. 65-75 ◽  
Author(s):  
A. Murychev
Keyword(s):  
Corporate Governance ◽  
Banking Sector ◽  
Competitive Advantages ◽  
Regional Banks

The article analyzes urgent issues of the development of Russian banks. The probability of Moscow banks' regional expansion is noted. Hence the necessity for regional banks to find market niches. Competitive advantages of small and medium-sized banks as well as barriers to their activity are considered. Special attention is paid to the problems of corporate governance in banks. The results of the survey conducted by the Association of Regional Banks of Russia in summer of 2004 are analyzed.

Genetic Diversity, Mating System, and Reproductive Output of Restored Melaleuca acuminata Populations are Comparable to Natural Remnant Populations

2019 ◽  
Vol 37 (4) ◽  
pp. 222-232 ◽  
Author(s):  
Melissa A Millar ◽  
Janet M Anthony ◽  
David J Coates ◽  
Margaret Byrne ◽  
Siegfried L Krauss ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mating System ◽  
Reproductive Output

Specifics of creating an effective system of project financing of innovation and investment activities of dairy subcomplex enterprises

2020 ◽  
Vol 26 (9) ◽  
pp. 1951-1969
Author(s):  
S.A. Chernikova
Keyword(s):  
Financial Stability ◽  
Current Model ◽  
Methodological Approach ◽  
Information Support ◽  
Competitive Advantages ◽  
Project Financing ◽  
Financing System ◽  
Management Of Innovation ◽  
Effective System ◽  
The Impact

Subject. The article considers the need to study the financing of investment and innovation processes and creating an effective system of project financing. Objectives. The purpose is to search for new opportunities to enhance the competitive advantages of enterprises of the dairy subcomplex, to ensure their financial stability and steady position in specialized agricultural food-product markets. Methods. The study draws on the theoretical and methodological approach to the impact of project management of innovation and investment activities on improving the efficiency of the project financing system and financial stability of enterprises operating in the dairy subcomplex. Results. The findings show that four levels can be distinguished in the formation and improvement of the system of project financing and the management of innovation and investment activities, depending on the depth of transformation. The principle that provides the integration of the said system with the current model of management of the dairy subcomplex enterprise is defined as a driver. The paper offers a number of levels of the system transformation to gain competitive advantages. Conclusions. I present a mechanism for creating and improving the system of project financing and the management of innovation and investment activities, and a mechanism for interaction of the network of automated information systems, intended to make management decisions, with the automation of information support to innovative solutions.

Challenges and threats to the economic security in the ferrous metallurgy

2020 ◽  
Vol 8 (8) ◽  
pp. 1527-1544
Author(s):  
I.L. Ryabkov ◽  
N.N. Yashalova
Keyword(s):  
Ferrous Metallurgy ◽  
Financial Management ◽  
Ferrous Metal ◽  
Economic Security ◽  
Competitive Advantages ◽  
Corporate Strategies ◽  
Group Methods ◽  
Production Distribution ◽  
The Impact ◽  
Market Strategies

Subject. The article focuses on market strategies of the Russian enterprises operating in the ferrous metallurgy. Objectives. The study is to analyze corporate strategies the leading ferrous metal manufacturers use in the Russian Federation, such as NLMK Group, Severstal, Magnitogorsk Iron & Steel Works, EVRAZ Group. Methods. The study interprets public financial statements and methods of the logic, intuitive and comparative analysis. Results. We analyze market strategies of the Russian metal manufacturers, determine their development priorities and competitive advantages and weaknesses. We describe the impact of various threats and measures metallurgical companies undertake to eliminate them. Conclusions and Relevance. We sorted out possible threats and exposures of the Russian metallurgic companies' economic security and traced the dynamics of their significance for 2015 to 2019. Key threats relate to policies, economy, external and internal market, regulations and laws, production, distribution and financial management, consumption, IT, social welfare and environment.

Social Responsibility of Authorities and Local Self-Government in Support of Integrated Development of Territories

2019 ◽  
pp. 22-27
Author(s):  
Victor Dubishchev ◽  
Olesia Hryhorieva ◽  
Iryna Makarenko
Keyword(s):  
Social Responsibility ◽  
Development Strategy ◽  
Global Economy ◽  
Competitive Advantages ◽  
Socially Responsible ◽  
Integrated Development ◽  
Responsible Behavior ◽  
Development Plans ◽  
Key Aspects ◽  
Intellectual Potential

The contemporary approaches to the development of territories are considered in the article. It is noted that the integrated European approach to the development of territories is increasingly being applied in Ukraine. The essence of integrated development, the stages of development of the Integrated Development Strategy (Concept Strategy), emphasized that understanding of the role and functions of government and local self-government in the development and implementation of integrated development of territories should be perceived not only as the current management task, but also as social responsibility to the community and society. The key aspects of socially responsible behavior of authorities and local self-government in ensuring integrated development of territories are determined. It is noted that the perception of the fulfillment of its functions as social responsibility will allow to effectively plan and implement the development plans of the territories, compete for investments and the best jobs; use the local resource of the territory to create competitive advantages of the region, provide motivation and the ability of "key players" to use competitive advantages and to cooperate effectively; create and maintain institutions that promote the use of intellectual potential, ongoing modernization and innovation in the region; to ensure the willingness and ability of key institutions to adapt to the challenges of the global economy.

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