2025-5-3- 19
Home > Archive>Volume 24, Issue 6, 2023 >1580-1590. DOI:10.13430/j.cnki.jpgr.20230401001
PDF HTML XML Export Cite reminder
SNP-based Genetic Diversity Dissection of Maize Landraces from Guangxi
Author:
Affiliation:

1.Maize Research Institute， Guangxi Academy of Agricultural Sciences/ Guangxi Sub-center of National Maize Improvement Center， Nanning 530007;2.Guangxi Subtropical Crops Research Institute，Nanning 530001;3.Research Center of Agricultural Sciences of Guilin/Guilin Branch of Guangxi Academy of Agricultural Sciences， Guilin 541006

Fund Project:

Foundation projects： Guangxi Science and Technology Base and Talent Special Projects （GuikeAD20159093）； Guangxi Key R&D Projects （GuikeAB21238004）； Guangxi Major Science and Technology Projects （GuikeAA17204045-2）； Basic Scientific Research Projects Sciences of GXAAS （Guinongke2021YT017）； National Crop Germplasm Resources Data Center Project （NAES018GR03）

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    In order to uncover elite local germplasm resources and improve the efficiency of maize breeding in Guangxi of China， 169 maize landraces from Guangxi were genotyped using 10K SNPs in the present study， followed by their genetic diversities and population structure analysis. The results showed that the average genetic diversity and polymorphic information content （PIC） of 5877 screened SNP markers were 0.37 and 0.30， respectively， exhibiting relatively higher diversity in maize landraces from Guangxi. The landraces from Northeastern Guangxi exhibited the highest diversity level （gene diversity=0.39， observed heterozygosity=0.27， minimum allele frequency=0.30， PIC=0.31）. Gained from the population structure and principal component analysis， 169 landraces were divided into two major populations. The genetic relationship and structured assignment among populations were not observed correlating with their geographical originations. Besides， all landraces exhibited relatively higher heterozygosity but relatively lower genetic similarity coefficients. Analysis of molecular variance （AMOVA） showed that 2% of genetic variation was contributed by inter-population diversity， while 98% was contributed by intra-population diversity. The genetic differentiation coefficient （FST） between populations was 0.049， indicating a relatively low level of genetic differentiation among populations. In summary， the present study uncovered the polymorphism and genetic relationship of maize landraces from different geographical regions of Guangxi， providing a theoretical reference for the improvement of maize germplasm and practical guidance of new variety development in these regions.

    Reference
    Related
    Cited by
Get Citation

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:April 01,2023
  • Revised:April 22,2023
  • Online: October 31,2023
  • Published: October 31,2023
Article QR Code
You are the th visitor 京ICP备09069690号-23
® 2025 All Rights Reserved
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Firefox, Chrome, IE10, IE11 are recommended. Other browsers are not recommended.