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The Germplasm Resources Of Thousand Years Have Medium Degree Genetic Diversity
Dec 19, 2017

In order to effectively develop and utilize the germplasm resources of the thousand-year tong, with the aid of the Hundred People Project, the Liu Aizhong Task Group of Xishuangbanna Tropical Botanical Garden of the Chinese Academy of Sciences recently found that the germplasm resources of thousand years have a medium degree of genetic diversity by analyzing the genetic diversity of the germplasm resources of the thousand-year tong. Relevant research results are published in the Journal of Tree Genetics and genomics.

It is introduced that the Tung oil tree is an important industrial fuel plant, the main ingredient of its seed oil is Tung petroleum acid, is an excellent drying, mainly used in industrial paint production, in China and Southeast Asia has hundreds of years of use history.

In recent years, with the increasing demand of biodiesel industrialization, the use of Tung oil seed grease as raw material to produce biodiesel has attracted much attention. Tung Oil tree has tung and thousand years Tong two kinds, are distributed in southern China and Southeast Asia. Although the genetic relationship between the two is very close to the source, but the shape is significantly different.

It is reported that, although the Tung tree cultivation and use of more than hundreds of years of history, but the scope of the Millennium Tong and the use of the degree is very limited. Compared with the Tung tree, the Millennium Tong has a stronger adaptability to the environment, and the yield per MU is relatively high.

To this end, the Liu Aizhong research group extensively investigated 30 different geographical populations of the Millennium Tong Germplasm resources, the use of molecular biology and bioinformatics Technology, the development of 22 SSR molecular markers, analysis of the genetic diversity of the Millennium Tong Germplasm resources. The research shows that the germplasm resources of the thousand years have a moderate degree of genetic diversity, and have obvious hereditary differentiation, which is closely related to their pedigree geography.

The researchers indicated that the study not only provided an important technical means to investigate the genetic diversity and germplasm identification of the Tung oil tree, but also provided molecular markers for the molecular-assisted breeding of Tung oil tree, which could promote the variety breeding and germplasm development and utilization of the Tung oil tree resources.