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Home > Archive>Volume 24, Issue 1, 2023 >117-125. DOI:10.13430/j.cnki.jpgr.20220830002
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Collection and Preliminary Identification of Germplasm Resources Resistant to Bacterial Blight of Wild Rice from Hainan Province
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Affiliation:

1.Institute of Crop Sciences， Chinese Academy of Agricultural Sciences， Beijing 100081;2.College of Life Sciences， Shenyang Normal University， Shenyang 110034;3.Institute of Grain Crops， Hainan Academy of Agricultural Sciences， Haikou 570100;4.Sanya National Institute of Southern Propagation， Chinese Academy of Agricultural Sciences，Sanya 572000;5.International Rice Research Institute， Manila 7777

Fund Project:

Foundation projects： National Key R&D Program of China （2021YFD1200101）；Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences （2060299-2-22 Year）；Basic Research Business Expenses of Central Public Welfare Research Institutes （S2022NF01）； National Key R&D Program of Hainan （ZDYF2022XDNF260）

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    Abstract:

    In order to salvage and protect wild rice resources in Hainan Province， P.R. China， in November 2021， the Institute of Crop Science， Chinese Academy of Agricultural Sciences in cooperation with the Institute of Grain Crops， Hainan Academy of Agricultural Sciences carried out the investigation， ectopic protection and bacterial blight resistance of wild rice. In this study， 21 wild rice distribution sites in 17 towns of 11 cities/counties in Hainan province were investigated. It was found that 9 distribution sites were in an endangered state， 7 were damaged to varying degrees， and only 2 wild rice reserves are not disturbed and 3 distribution sites were slightly disturbed. 210 wild rice resources were collected and preserved in the National Wild Rice Germplasm Garden. In addition， the Philippine race 6 （PXO99）， which is highly aggressive with broad pathogenicity， was tested using artificial inoculation for bacterial blight resistance in this collection of 145 O. rufipogon Griff. and 47 O. officinalis Wall. ex G. Watt. Five accessions showing high resistance to bacterial blight were identified， which laid a rich material foundation for the research and breeding of resistance to bacterial blight in rice.

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History
  • Received:August 30,2022
  • Revised:September 23,2022
  • Online: January 12,2023
  • Published: January 12,2023
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