Evaluation and Utilization of Soybean Germplasm Resistant to Race 2 of Soybean Cyst Nematode
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Henan Academy of Crop Molecular Breeding / National Centre for Plant Breeding / Zhengzhou Subcenter of National Soybean Improvement Center/Key Laboratory of Oil Crops in Huanghuaihai Plains,Ministry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crops Improvement

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National Key Research and Development Program of China(2016YFD0100201),National Natural Science Foundation of China(31901501, 31371652),Project form Henan Academy of Agricultural Sciences(2021JC11)

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    Abstract:

    Soybean cyst nematode(SCN)race 2 is predominant in the Huang-huai Rivers valley. Out of 333 soybean accessions that have been tested for the resistance to SCN race 2(SCN 2)since 2017,19 resistant accessions including 5 resistant and 14 moderately resistant have been identified. Genotyping using KASP markers showed that all the 19 resistant accessions harbored two resistant loci rhg1 and Rhg4. The genotypes of KASP markers linked to rhg1 and Rhg4 for 18 accessions were the same as PI90763,while Yuanheidou was consistent with PI437654. Moreover,resistant genotype Zheng 12915 and Zheng 12929,which were developed from resistant germplasm Huipizhiheidou showed agronomic performance better than the parental line. Collectively, these results provided a basis for SCN breeding in soybean.

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History
  • Received:July 21,2021
  • Revised:October 10,2021
  • Adopted:October 12,2021
  • Online: March 10,2022
  • Published:
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