Symptom Identification and Control Methods of Carnation Necrotic Fleck Disease
[Pathogen] Carnation necrotic fleck virus (Carnationnecroticfiackvirus, CaNFU), thermal death point 40-45°C, in vitro survival period 2-4 days at 20°C. [Symptoms] Grayish-white, pale yellow, or purplish-red necrotic spots or streaks appear on the leaves, and the streaks are often parallel to the leaf veins. Older leaves are more severely affected, and the disease spreads upward. In severe cases, the entire leaf turns yellow and necrotic.
[Pathogen] Carnation necrotic fleck virus (Carnationnecroticfiackvirus, CaNFU), thermal death point 40-45°C, in vitro survival period 2-4 days at 20°C.
[Symptoms] Grayish-white, pale yellow, or purplish-red necrotic spots or streaks appear on the leaves, and the streaks are often parallel to the leaf veins. Older leaves are more severely affected, and the disease spreads upward. In severe cases, the entire leaf turns yellow and necrotic.