Tang Fu Po virus disease is a widespread viral infection that affects cultivated areas globally. It primarily impacts the health and appearance of plants, leading to bulb degeneration, stunted growth, shortened flower spikes, reduced number of blooms, and smaller, less vibrant flowers. This significantly reduces the quality of cut flowers, causing economic losses for growers. The symptoms of the disease typically appear on leaves, flowers, and other plant parts. Initially, infected leaves show small, chlorotic (yellowish) spots that are restricted by leaf veins, forming polygonal lesions that eventually turn brown. As the infection progresses, the leaves may become dark green, mottled with yellow or light green patches, and develop a twisted or curled appearance. Affected plants often grow shorter than normal, with shorter flower spikes, fewer blossoms, and smaller flowers. In certain varieties, the petals may show discoloration or appear broken, further reducing their aesthetic value. The disease is caused by two viruses: Bean yellow mosaic virus (BYMV) and Cucumber mosaic virus (CMV). Both viruses survive in infected bulbs and plant debris throughout the winter. They are transmitted through sap contact and by various aphid species. These viruses have a broad host range, infecting not only ornamental plants but also many vegetables and weeds, making them difficult to control. To manage this disease effectively, several control measures can be implemented: 1. Strengthen quarantine protocols and promptly destroy any infected bulbs to prevent the spread of the virus. 2. Establish virus-free seedling bases to produce healthy, disease-free plants for planting. 3. Regularly remove weeds from fields and surrounding areas to reduce potential sources of infection. 4. Apply insecticides to control aphid populations, as they serve as vectors for the virus. By combining these strategies, growers can significantly reduce the risk of Tang Fu Po virus disease and maintain the quality of their crops.

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