Necrotic spot of Carnation
[pathogen] Carnation necrotic streak virus (Carnationnecroticfiackvirus,CaNFU), the lethal temperature was 40-45 ℃ and the in vitro survival time was 20 ℃-2-4 days.
[symptoms] there are grayish white, yellowish or purplish red necrotic spots or stripes on the leaves, which are often parallel to the veins. The old leaf occurs more seriously and spreads upward. When it is serious, the whole leaf turns yellow and necrotic.
- Prev
wilting of carnation
[Symptoms] The external symptoms of this disease are very similar to those caused by Fusarium wilt. The leaves of the diseased plants turn gray-green, then yellow, and dead tops appear. The plants wither and die due to the rupture of the stems. A yellow to light brown stripe can be seen when examining the central column. At the same time as the aboveground disease, the root also disintegrated. The occurrence of the disease can be divided into two situations: acute type develops rapidly, especially after the young plants on the hotbed are damaged; when the damage is slight, the leaves are twisted. [Pathogen] Pseudomonas carnation [Pseudomo]
- Next
Grey mold of carnation
[introduction] the disease is a common disease of growing carnation in greenhouse and greenhouse, which can cause brown spot or rot of petals, which seriously affects the quality of cut flowers. [symptoms] Botrytis cinerea mainly occurs when light brown water stains begin to appear at the edge of petals, and then several petals are entangled by gray fungi. If the environment is wet, the petals rot and there is gray mildew on it. When the flower bud occurs, there are waterlogged irregular spots, soft rot, but also produce gray mildew.
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