Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2021, Vol. 11 ›› Issue (1): 11-16.doi: 10.11923/j.issn.2095-4050.cjas20190900197

Special Issue: 生物技术 水稻

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Detection of the Rice Blast Resistance Genes Pita and pik in Heilongjiang: HRM Functional Markers

Guo Zhenhua1,2(), Huang Cuihong2, Luo Wenlong2, Huang Xiaoqun1, Wang Ruiying1, Chen Zhiqiang2, Guan Shiwu1, Zhang Shuhua1, Cai Lijun3   

  1. 1Rice Research Institute of Heilongjiang Academy of Agricultural Sciences, Jiamusi 154026, Heilongjiang, China
    2National Engineering Research Centre of Plant Space Breeding, Guangzhou 510642, Guangdong, China
    3Jiamusi Branches of Heilongjiang Academy of Agricultural Sciences, Jiamusi 154026, Heilongjiang, China
  • Received:2019-09-20 Revised:2019-11-15 Online:2021-01-20 Published:2021-02-05

Abstract:

To clarify the distribution of Pita gene and pik gene in rice germplasm resources of Heilongjiang, 67 major varieties and excellent germplasm resources were used as materials with HRM (high resolution melting) technology. 67 materials were used for genotyping analysis by Pita-G/T and Pik2-C/T of Pita and pik HRM-based functional markers. The results showed that, among the 67 germplasm resources, 27 germplasm resources contained the homozygous gene Pita (40.3% of the total number), 22 germplasm resources contained the homozygous gene pik (32.9% of the total number) and 12 germplasm resources contained both of the two homozygous genes (17.9% of the total number). Based on the results, the functional markers Pita-G/T and Pik2-C/T could be efficiently and accurately used in rice genotyping in Heilongjiang, meanwhile, through genotyping the materials in this research, we clarified the distribution of those two genes in Heilongjiang, which provided a theoretical basis for rice blast resistance breeding.

Key words: Rice, High Resolution Melting (HRM), Pita Gene, pik Gene, Genotyping

CLC Number: