Morphological Characteristics and Causes of Blight Disease on Two Lotus Varieties Bach Diep and Hong (Nelumbo nucifera Gaertn.) Grown in My Duc and Chuong My, Hanoi

Date Received: 11-06-2025

Date Accepted: 17-09-2025

Date Published: 30-09-2025

##submissions.doi##: https://doi.org/10.31817/tckhnnvn.2025.23.9.01

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Tuoi, N., Ngoc, P., Dung, H. D., Cuong, H., & Thuy, D. (2025). Morphological Characteristics and Causes of Blight Disease on Two Lotus Varieties Bach Diep and Hong (Nelumbo nucifera Gaertn.) Grown in My Duc and Chuong My, Hanoi. Vietnam Journal of Agricultural Sciences, 23(9), 1137–1149. https://doi.org/10.31817/tckhnnvn.2025.23.9.01

Morphological Characteristics and Causes of Blight Disease on Two Lotus Varieties Bach Diep and Hong (Nelumbo nucifera Gaertn.) Grown in My Duc and Chuong My, Hanoi

Ngo Thi Hong Tuoi (*) 1 , Pham Thi Ngoc 2 , Hoang Dang Dung 3 , Ha Viet Cuong 2 , Doan Thu Thuy 2

  • Tác giả liên hệ: [email protected]
  • 1 Khoa Nông học, Học viện Nông nghiệp Việt Nam
  • 2 khoa Nông học
  • 3 HVNNVN

    • Keywords

    Blight, Nelumbo nucifera, Lasiodiplodia theobromae

    Abstract


    The study was conducted to evaluate the morphological characteristics and determine the cause of the blight disease of two varieties of lotus, Hong and Bach Diep, in My Duc commune and Chuong My ward - Hanoi. The research method included evaluating morphological characteristics according to UPOV standards (2023), isolating the fungus from diseased lotus samples according to the method of Burgess & cs. (2008), testing artificial infection in pots and mason jars. The results showed that both varieties have pink flowers, showy flowers fragrant, suitable for planting as ornamental plants and cultivation in eco-tourism areas. The Hong lotus variety has single-petal flowers, while the Bach Diep lotus variety has double-petal flowers. The fungus Lasiodiplodia theobromae was identified as the cause of the blight disease on two lotus varieties in My Duc commune and Chuong My ward. Both lotus varieties in the experiment were infected at a very severe level (level 9), with clear diseased leaves, petiole and the plants blighted after 10-14 days. The research results provide a scientific basis for proposing effective disease prevention and control measures. This is an important premise to protect production, preserve the environment and develop lotus growing areas in an ecological and sustainable direction.

    Author Biographies

    Pham Thi Ngoc, khoa Nông học

    Bộ môn Di truyền và chọn giống cây trồng

    Hoang Dang Dung, HVNNVN

    Trung tâm thực nghiệm và đào tạo nghề

    Ha Viet Cuong, khoa Nông học

     

    Bộ môn Bệnh cây

    Doan Thu Thuy, khoa Nông học

    Bộ môn Di truyền và Chọn giống cây trồng

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