数字农科院2.0

The Genetic Diversity Assessment of Broomcorn Millet (Panicum miliaceum) and the Construction of a Mini-Core Collection

文献类型： 外文期刊

作者： Jiandong Ren;Xiaohan Yu;Xiaoxing Wang;Yue Wang;Xuxia Xin;Ruonan Wang;Yingxing Zhang;Minxuan Liu;Jishan Xiang

作者机构：

关键词： broomcorn millet;core collection;genetic diversity;mini-core collection

期刊名称： Agronomy

ISSN： 2073-4395

年卷期： 2024 年 14 卷 10 期

页码：

收录情况： SCIE（2024版）

摘要： Broomcorn millet (Panicum miliaceum L.) is a crop with a good ability to adapt to the environment. Over 8800 accessions have been collected in the national gene bank of China. The huge quantity of germplasms made it difficult for analysis and evaluation. Although a broomcorn millet core collection (CC) comprising 780 accessions was established, the number is still too large for researchers to explore in depth. In this study, the genetic diversity of 634 broomcorn millet accessions from the core collection was analyzed based on SSR markers. A mini-core collection (MC) containing 256 accessions was extracted. The mini-core collection accounted for less than half of the original core collection and only about 2.8% of the total resources but still provided a good representation. In addition, the results of this study validated that Shanxi is the origin of broomcorn millet, and accessions from the South region may contain novel genes. In conclusion, this study provides a comprehensive characterization of the genetic diversities of broomcorn millet core collection in China. Moreover, an MC may aid in reasonably and efficiently selecting materials for broomcorn millet breeding as researchers could screen for aimed genetic characters within a smaller scope.

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