1.Develop reverse transcription-PCR virus detection technologies for Chrysanthemum stunt viroid (CSVd), Tomato aspermy virus (TAV), Chrysanthemum virus B (CVB), the above three viruses mainly harm the quality of Hangju () production.
2. The application of tissue culture technology to establish mass propagation methods for specific virus-free Hangju () seedlings. By providing a good and stable source of healthy seedlings, to improve the yield and quality of Hangju agricultural products.