scholarly journals Identification of duplicate accessions in the sweet maize collection by means of zein electrophoresis

2020 ◽  
Vol 24 (6) ◽  
pp. 589-597
Author(s):  
V. V. Sidorova ◽  
Yu. A. Kerv ◽  
A. V. Konarev

Of all the subspecies of Zea mays L. cultivated in the world, sweet maize is the most important for the global economy. The leading seed-growing companies and research institutions around the world are engaged in breeding this crop. To meet the increasing demands of the industry to grain quality, it is important to select appropriate local varieties and lines for hybridization. Local (usually heterogeneous) varieties are a valuable source material for creating self-pollinated lines that contribute to a significant broadening of the genetic base of parental forms used in breeding. The advantages of sweet maize varieties and the interest of the food industry in them make it possible to consider accessions from the maize collection of the N.I. Vavilov Institute (VIR) as a potentially valuable source material for breeding. The present research concentrated on 19 local sweet maize varieties with different grain colors from the VIR collection, that is, 9 varieties with the blue color of ripe grain, 4 with white (colorless) grain, 3 with yellow, and 3 with red. The research included an analysis of zein electrophoretic patterns (protein markers); a study of their biotype composition and the nature of genetic polymorphism, as well as the creation of a protein pattern database for each accession. For a series of accessions with the same varietal name, but different catalog numbers, the degree of their identity was determined from their biotype composition in order to exclude duplication. Zein electrophoresis was carried out in vertical plates of 10 % polyacrylamide gel according to the standard ISTA technique developed with the participation of the Biochemistry and Molecular Biology Department of VIR. Zein patterns were used for the first time to electrophoretically study sweet maize varieties with different grain colors. Unique zein patterns were established for all the accessions studied, which makes possible their identification by specific marker components. The results of this work characterize zein electrophoresis as a useful tool for the identification and registration of duplicate accessions in the VIR collection of sweet maize varieties.

2001 ◽  
pp. 13-17
Author(s):  
Serhii Viktorovych Svystunov

In the 21st century, the world became a sign of globalization: global conflicts, global disasters, global economy, global Internet, etc. The Polish researcher Casimir Zhigulsky defines globalization as a kind of process, that is, the target set of characteristic changes that develop over time and occur in the modern world. These changes in general are reduced to mutual rapprochement, reduction of distances, the rapid appearance of a large number of different connections, contacts, exchanges, and to increase the dependence of society in almost all spheres of his life from what is happening in other, often very remote regions of the world.


2013 ◽  
pp. 97-116 ◽  
Author(s):  
A. Apokin

The author compares several quantitative and qualitative approaches to forecasting to find appropriate methods to incorporate technological change in long-range forecasts of the world economy. A?number of long-run forecasts (with horizons over 10 years) for the world economy and national economies is reviewed to outline advantages and drawbacks for different ways to account for technological change. Various approaches based on their sensitivity to data quality and robustness to model misspecifications are compared and recommendations are offered on the choice of appropriate technique in long-run forecasts of the world economy in the presence of technological change.


Author(s):  
Karina Pasulka ◽  
◽  
Nataliya Kushnir ◽  

Introduction. The situation in the global economy and business during the COVID-19 pandemic is analyzed in this article. More than 30 million people worldwide have already been infected with the coronavirus, which came from China. However, the spread of the disease has also had an extremely serious impact on the economies of various countries in the world. The Organization for Economic Co-operation and Development has already said that it will take many years for the world to recover from the pandemic. EU GDP in the second quarter of 2020 showed a record decline - 14.4% year on year. The German economy returned to the level of 2011, the Spanish - in 2002, and the Italian economy was rejected in the early 1990s. These and other characteristics show the importance of research on this topic and problem, because it does not apply to a particular region or a particular country, but the whole world.


2020 ◽  
Vol 2 (3) ◽  
pp. 153-158
Author(s):  
E. V. YANUSIK ◽  

The article discusses the main prerequisites for the development of nuclear energy in the global econo-my, also defines nuclear energy and discusses the structure of global energy consumption. The article proves that the crucial prerequisite for the development of nuclear energy in the world market is the economic efficiency of nuclear power plants.


Author(s):  
Руслан Гринберг ◽  
Ruslan Grinberg ◽  
Леонид Гринин ◽  
Leonid Grinin ◽  
Андрей Коротаев ◽  
...  

The modern deflationary phenomena in the western and global economy are attributed to the fact that currently it is at the downward phase of the fifth long K-wave. Deflation has always been typical for the depressive periods in economy; presently it also manifests itself as the world economy has turned global, yet it lacks any control mechanisms. The authors suppose that a new economic crisis will break out in the western economy in the second half of 2018–2019 and that the depressive and deflationary trends will continue for another number of years.


Author(s):  
Matthew A. Shadle

The conclusion looks at the teaching of Pope Francis, considering the possibility that it represents the emergence of a new framework for Catholic social teaching. Pope Francis has emphasized that the encounter with Jesus Christ brings about an experience of newness and openness. He has also proposed a cosmic theological vision. His concept of “integral ecology,” introduced in his encyclical Laudato Si’, illustrates how human society is interconnected with the natural ecology of the planet earth and the entire cosmos. He proposes that the economy, society, culture, and daily life are all interconnected “ecologies.” In a speech to the World Meeting of Popular Movements in 2015, Pope Francis also explains how social movements devoted to local issues can nevertheless have a profound effect on the structures of the global economy. In his teachings, Pope Francis presents an organicist and communitarian vision of economic life.


Author(s):  
Matthew A. Shadle

In recent years the economy has become globalized. Globalization is the increased flow of goods, services, capital, people, and culture facilitated by innovations in transportation and communication technologies. This chapter examines the phenomenon of globalization and its impact on Catholic social teaching. It looks, in particular, at Pope Benedict XVI’s encyclical Caritas in Veritate. Pope Benedict criticizes how the current global economy exploits and excludes vulnerable populations around the world. Caritas in Veritate further develops the communio framework initiated by John Paul II and proposes that the communion of the three Persons of the Trinity provides a model for the shape globalization should take, recognizing unity in the midst of diversity. The chapter also looks at how Catholic social thought itself is globalizing, examining in particular the work of Mary Mee-Yin Yuen from Hong Kong and Stan Chu Ilo from Nigeria.


Author(s):  
Chris Wickham

Building on impressive new research into the concept of a ‘global middle ages’, this chapter offers insights into how economic formations developed around the world. Drawing on new research on both Chinese and Mediterranean economies in the ‘medieval’ period, it compares structures of economy and exchange in very different parts of the world. The point of such comparisons is not simply to find instances of global economic flows but to understand the logic of medieval economic activity and its intersections with power and culture; and, in so doing, to remind historians that economic structures, transnational connections, and the imbrications of economy and politics do not arrive only with modernity, nor is the shape of the ‘modern’ global economy the only pattern known to humankind.


This volume documents the intellectual influence of the United Nations through its flagship publication, the World Economic and Social Survey (WESS) on its seventieth anniversary. Prepared at the Department of Economic and Social Affairs (DESA) and first published in 1948 as the World Economic Report (subsequently renamed the WESS), it is the oldest continuous post-World War II publication of this kind, recording and analysing the performance of the global economy and social development trends, and offering relevant policy recommendations. This volume highlights how well WESS has tracked global economic and social conditions, and how its analyses have influenced and have been influenced by the prevailing discourse over the past seven decades. The volume critically reflects on its policy recommendations and their influence on actual policymaking and the shaping of the world economy. Although world economic and social conditions have changed significantly over the past seven decades and so have the policy recommendations of the Survey, some of its earlier recommendations remain relevant today; recommendations in WESS provided seven decades ago seem remarkably pertinent as the world currently struggles to regain high levels of employment and economic activity. Thus, in many ways, WESS was ahead of the curve on many substantive issues. Publication of this volume will enhance the interest of the wider community of policymakers, academics, development practitioners, and members of civil society in the analytical work of the UN in general and UN-DESA in particular.


Emerging Markets are the primary source of growth for business in the 21st century. This makes an understanding of managing businesses in emerging markets a fundamental building block for competing in today's global economy. This book's approach is to identify key elements of the business systems and competition in emerging markets around the world, and then to look at competitive strategies of local and multinational companies going into and coming out of these countries. Specific focus is offered on a selection of countries/regions. These emphases should serve both researchers and managers interested in knowing more about managing firms in emerging markets in general and in specific countries in particular. The essays highlight the tension between local and global knowledge, that is, views of business that apply everywhere around the world versus views that are particular to emerging markets. The essays also explore the role of local and international firms operating in emerging markets within global value chains or production networks.


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