Abstract
To analyze the hotspots and trend of the study on global transgenic maize, the paper collected literature on transgenic maize from 2001 to 2018 which are included in the core journals in the database of Web science as samples and used Citespace for visual analysis of mapping knowledge domain of studies on transgenic maize, based on the bibliometric method. As a result, 3546 pieces of documents have been sifted out from 3557 pieces of documents which have been retrieved according to the search strategy, the literature are in a stable situation and show a tendency of increase. The paper analyzed the scientific knowledge graphs on co-authors analysis network, co-institutions analysis network, author co-citation analysis network, citation analysis network and keyword co-appearance network by using Citespace software. Therefore, in cluster analysis, it is found that in the study on transgenic maize, Chinese scholars and institutions hold an advantage in quantity while the citation of foreigners’literature is higher than Chinese. Besides, the focus of global research is mainly about bacillus thuringiensis, arabidopsis thaliana, protein, gene expression, transformation, resistant, etc.
Highlights
As one of the five major cereal crops, corn occupies an important position in the world's agricultural production and plays an important role in the production of food and feed for all countries
The United States Department of Agriculture (USDA) statistics show that more than 90% of the soybeans planted in various states in the United States were genetically modified variety in 2016 [2]
Maize has been widely studied by scientists around the world as the main research object of transgenic technology
Summary
As one of the five major cereal crops, corn occupies an important position in the world's agricultural production and plays an important role in the production of food and feed for all countries. Maize has been widely studied by scientists around the world as the main research object of transgenic technology. Research results have been applied to the application of transgenic technology, including resistance to maize borer, root insect pests and herbicides, and improvement of maize nutritional quality. This studies compensate for the limitations of traditional breeding methods in maize genetic improvement. As a rapidly developing discipline, GM crop research currently lacks related research on the overall development trend of global transgenic research in recent years. Researchers should understand the global GM maize research field, and fully grasp the development history, the main thread, and the frontline trend of GM maize research.
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