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Home > Archive>Volume 21, Issue 4, 2020 >827-833. DOI:10.13430/j.cnki.jpgr.20191128001
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Genetic Analysis and Gene Identification of High-Quality Rice ‘Yuenong Simiao’ with Broad Spectrum Resistance Against Rice Blast
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Affiliation:

Rice Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice Breeding

Fund Project:

Guangzhou Science and Technology Plan (201804010467); Natural Science Foundation of Guangdong Province (2018A0303130172，2017A030313183); Rice Innovation Team Project of Modern Agricultural Industrial Technology SWystem in Guangdong Province (2019KJ105); Research and Development Program in Key Areas of Guangdong Province (2018B020202004，2018B020206002); Special Fund for Science and Technology Innovation Strategy (Construction of High-level Agricultural Academy)

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    Abstract:

    Rice ‘Yuenong Simiao’ recently bred in Guangdong Province, China, with a strong resistance to rice blast, is a leading high-quality cultivar for regular cultivation, which can also be used as a hybrid rice restorer line. In this study, it has been revealed that ‘Yuenong Simiao’ has a broad spectrum of resistance against rice blast strains from South China. Genetic analysis of genetically segregated F2 population of ‘Yuenong Simiao’ × ‘LTH’ showed that the broad resistance spectrum of ‘Yuenong Simiao’ may be controlled by multiple genes. Using the molecular markers of major resistance genes Pi1, Pi2, Pi9, Pib and Pita, we have detected that ‘Yuenong Simiao’ contains at least Pi2 and Pib resistance loci. These results have revealed the cultivar’s genetic basis of high resistance to rice blast, and provides important molecular basis for extending the cultivation of disease-resistant cultivars.

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History
  • Received:November 28,2019
  • Revised:February 11,2020
  • Adopted:February 11,2020
  • Online: July 20,2020
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