河南农业科学 ›› 2022, Vol. 51 ›› Issue (12): 19-27.DOI: 10.15933/j.cnki.1004-3268.2022.12.003

• 作物栽培·遗传育种 • 上一篇    下一篇

9 个抗稻瘟病基因在291 份水稻种质资源中的分布及组合特征

桑世飞1,2,王亚男1,王君怡1,曹梦雨1,孙晓涵1,姬生栋1,2   

  1. (1.河南师范大学 生命科学学院,河南 新乡 453007;2.河南省作物遗传改良与种质创新工程研究中心,河南 新乡 453007)
  • 收稿日期:2022-08-02 出版日期:2022-12-15 发布日期:2023-01-17
  • 通讯作者: 姬生栋(1963-),男,河南新乡人,教授,主要从事水稻遗传育种研究。E-mail:jisd99@126.com
  • 作者简介:桑世飞(1989-),男,河南开封人,讲师,博士,主要从事水稻遗传育种研究。E-mail:sangshifei@qq.com。王亚男为同等贡献作者
  • 基金资助:
    河南省科技攻关计划项目(212102110064);河南水稻产业体系项目(Z2012-04-G02);国家重点研发计划项目(2018YFD0200200)

Distribution and Combination Features of Nine Blast Resistant Genes in 291 Rice Germplasm Resources

SANG Shifei1,2,WANG Ya’nan1,WANG Junyi1,CAO Mengyu1,SUN Xiaohan1,JI Shengdong1,2   

  1. (1.College of Life Sciences,Henan Normal University,Xinxiang 453007,China;2.Henan Crop Genetic Improvement and Germplasm Innovation Engineering Research Center,Xinxiang 453007,China)
  • Received:2022-08-02 Published:2022-12-15 Online:2023-01-17

摘要: 通过对Pib 抗、感稻瘟病基因型序列进行比对,开发分子标记,并搜集已报道的8个抗稻瘟病基因(Pi9、Pi-kh、Pit、Pi5、Pita、Pb1、Pi2、Pikm)的分子标记,分析这9个抗稻瘟病基因在291份水稻种质资源(以黄淮海区域种质为主)中的分布及组合特征,为今后抗稻瘟病分子标记辅助选择育种提供理论依据。结果表明,成功开发了Pib基因分子标记。单份水稻种质资源中携带的抗稻瘟病基因数目为0~6个,携带3个抗稻瘟病基因的种质资源最多,占比40.9%,其次为携带2个(20.3%)和4个(19.2%)抗稻瘟病基因的种质资源,携带6个抗稻瘟病基因的种质资源最少(0.4%)。9个抗稻瘟病基因在水稻种质资源中出现的频率存在较大差异,介于7.2%~59.1%,Pi9基因出现频率最高(59.1%),Pi-kh次之(50.8%),随后依次为Pib(41.2%)、Pi5(36.4%)、Pita(29.2%)、Pb1(28.8%)、Pi2(19.5%)、Pikm(17.1%),Pit基因出现频率最低(7.2%)。291份水稻种质资源中共有抗稻瘟病基因组合93个,Pi9+Pi-kh+Pita组合水稻种质资源最多(18份),其次为Pi9+Pi-kh+Pib组合(17份)和Pi9+Pb1组合(11份),Pi9+Pi5+Pb1Pi9+Pi-khPikh+Pita组合均有9份,其他组合均低于8份。

关键词: 水稻, 抗稻瘟病基因, 分子标记, 基因组合, Pib

Abstract: The molecular markers of eight blast resistant genes(Pi9,Pi‑kh,Pit,Pi5,Pita,Pb1,Pi2 and Pikm)were collected,and the Pib molecular marker was developed by comparing the sequences of rice blast resistant and susceptible genotypes of Pib.Based on these molecular markers,we analyzed the distribution and combination features of these nine rice blast resistant genes in 291 rice germplasm resources(mainly from Huang‑Huai‑Hai region),so as to provide a theoretical basis for molecular marker assisted selection breeding for rice blast resistance in the future.The results showed that the molecular marker of Pib gene was successfully developed.The number of rice blast resistance genes in a rice germplasm resource was 0—6,and the number of germplasm resources carrying three rice blast resistance genes was the most,accounting for 40.9%,followed by the number of germplasm resources carrying two(20.3%) and four(19.2%) rice blast resistance genes,and the germplasm resources carrying six rice blast resistance genes were the least(0.4%).The frequency of nine rice blast resistance genes in rice germplasm resources was obviously different,ranging from 7.2% to 59.1%.The frequency of Pi9 gene was the highest(59.1%),followed by Pi‑kh(50.8%),Pib(41.2%),Pi5(36.4%),Pita(29.2%),Pb1(28.8%),Pi2(19.5%)and Pikm(17.1%),and the frequency of Pit gene was the lowest(7.2%).There were 93 rice blast resistance gene combinations in 291 rice germplasm resources.Pi9+Pi‑kh+Pita combination number was the most in rice germplasm resources(18),followed by Pi9+Pi‑kh+Pib combination(17),Pi9+Pb1combination(11).The number of Pi9+Pi5+Pb1Pi9+Pi‑kh and Pi‑kh+Pitacombinations was the same(9),and the number of the other combinations was less than eight.

Key words: Rice, Rice blast resistant gene, Molecular marker, Gene combination, Pib

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