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<p>Foot rot disease is one of the major diseases in Basmati rice causing enormous damage to the yield. Foot rot resistance genes have been identified which advances our understanding of underlying mechanisms of resistance thus facilitate breeding for resistant cultivars. In this study, Next-Generation Sequencing (NGS)-based Bulk Segregant Analysis (BSA) was employed to identify Quantitative Trait Loci (QTL) regions associated with foot rot resistance in Basmati rice. A mapping population was developed from a cross between the elite Basmati variety Punjab Basmati 7 and the aromatic rice cultivar Punjab Mehak 1, which exhibit distinct levels of resistance to foot rot. While Punjab Basmati 7 is highly susceptible, Punjab Mehak 1 demonstrates moderate resistance to the disease. Two candidate QTL regions <i>qfr1.1</i> and <i>qfr1.2</i> were identified on chromosome 1 from 14.09 to 18.37&#xa0;Mb (3.46&#xa0;Mb) and 21.42 to 24.07&#xa0;Mb (2.68&#xa0;Mb) genomic region respectively. The QTLs identified in the present study would facilitate identification of genes responsible for resistance to foot rot in rice cultivar Punjab Mehak 1.</p>

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Identification of genomic region conferring foot rot resistance in aromatic rice cultivar Punjab Mehak 1

  • 期刊论文

  • 发表日期：

    2026年5月7日

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  • Chandan Jaswal,
  • Navjot Sidhu,
  • Dharminder Bhatia,
  • Kumari Neelam,
  • Mandeep Singh Hunjan,
  • Jyoti Jain,
  • R. S. Gill

摘要

Foot rot disease is one of the major diseases in Basmati rice causing enormous damage to the yield. Foot rot resistance genes have been identified which advances our understanding of underlying mechanisms of resistance thus facilitate breeding for resistant cultivars. In this study, Next-Generation Sequencing (NGS)-based Bulk Segregant Analysis (BSA) was employed to identify Quantitative Trait Loci (QTL) regions associated with foot rot resistance in Basmati rice. A mapping population was developed from a cross between the elite Basmati variety Punjab Basmati 7 and the aromatic rice cultivar Punjab Mehak 1, which exhibit distinct levels of resistance to foot rot. While Punjab Basmati 7 is highly susceptible, Punjab Mehak 1 demonstrates moderate resistance to the disease. Two candidate QTL regions qfr1.1 and qfr1.2 were identified on chromosome 1 from 14.09 to 18.37 Mb (3.46 Mb) and 21.42 to 24.07 Mb (2.68 Mb) genomic region respectively. The QTLs identified in the present study would facilitate identification of genes responsible for resistance to foot rot in rice cultivar Punjab Mehak 1.