Evaluation of Sticky Rice Genetic Resources for Resistance to Bacterial Leaf Light Disease

Date Received: 07-06-2025

Date Published: 13-06-2025

##submissions.doi##: https://doi.org/10.31817/tckhnnvn.2013.11.6.

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Issue: Vol. 11 No. 6 (2013)

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How to Cite:

Ton, P., Thanh, T., Giang, N., Hung, N., & Hai, T. (2025). Evaluation of Sticky Rice Genetic Resources for Resistance to Bacterial Leaf Light Disease . Vietnam Journal of Agricultural Sciences, 11(6). https://doi.org/10.31817/tckhnnvn.2013.11.6.

Evaluation of Sticky Rice Genetic Resources for Resistance to Bacterial Leaf Light Disease

Phan Huu Ton (*) , Trịnh Thanh , Nguyen Van Giang , Nguyen Van Hung , Tong Van Hai

  • Tác giả liên hệ: [email protected]

    • Keywords

    Bacterial leaf blight, DNA, PCR, Xa4, xa5, Xa7, Xanthomonas oryzae pv. oryzae, sticky rice

    Abstract


    Bacterial leaf blight disease caused by Xanthomonas oryzae pv. oryzae is one of the most severe diseases that causes yield loss in Vietnam. Possession of genetic resources with resistance plays an important role in developing durable resistant varieties. In this study, we used DNA markers Npb181, P3 and RG556 to identify Xa4, Xa7 and xa5 genes, respectively, in 120 local sticky rice accessions. We found that 95/120 accessions have the resistant genes, of these 4 varieties were identified to carry xa5 gene, 19 varieties were identified to carry xa4, gene 82 varieties with Xa7 gene, and 10 varieties with both Xa4 and Xa7 genes. Different genes resist to different number of bacterial strains. Two strains 4 and 5 are highly virulent, even causing disease on accessions containing the efective resistant genes (Xa4, xa5 or Xa7). 18 accessions that showed good esistance and high yield potential were selected. These materials can be used for rice breeding program with high yield  and bacterial leaf blight resistance.

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