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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (5): 33-38.doi: 10.11924/j.issn.1000-6850.casb2022-0152

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SSR Markers of Maize and Sorghum: The Transferability in Adlay

FU Yuhua1(), MENG Qiuyi1, SHANG Kun1, LI Xiushi1, LIU Fanzhi1, LI Xiangdong2()   

  1. 1 Guizhou Institute of Subtropical Crops, Guizhou Academy of Agricultural Sciences, Xingyi, Guizhou 562400
    2 Southwest Guizhou Institute of Agricultural and Forestry Sciences, Xingyi, Guizhou 562400
  • Received:2022-03-07 Revised:2022-06-15 Online:2023-02-15 Published:2023-02-06

Abstract:

In order to select available molecular makers for adlay germplasm and genetics research, the transferability and polymorphism of SSR markers from maize and sorghum were tested in adlay. 11 adlay germplasms were selected as materials, and then 364 SSR primers from maize and sorghum were screened by SSR-PCR and capillary electrophoresis methods. The results showed that 163 out of the 364 markers were successfully amplified in adlay, among which 44 markers showed well polymorphism. The percentage of transferability and polymorphism of SSR markers from sorghum were 58.02% and 30.85%, respectively, while those from maize were 23.45% and 26.47%, respectively. Sorghum SSR markers exhibited better transferability and polymorphism in adlay. A total of 110 alleles were amplified using the 44 SSR primers in the 11 adlay germplasms, with a number of bands ranging from 1 to 5 (an average of 2.5). PIC ranged from 0.15 to 0.79 and 15 SSR primers had PIC greater than 0.5, accounting for 34.09% of the total polymorphic SSR primers. Therefore, the transferable markers could provide useful genetic markers for germplasm diversity and molecular genetics research in adlay, and they could also be a powerful tool for comparative genomics among sorghum, maize and adlay.

Key words: maize, sorghum, adlay, SSR markers, transferability