Mushroom virus
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Pathogen mushroom virus. Symptoms The main symptoms of mushroom virus disease are decreased yields and deformed fruit bodies. British scholar Schisler (1967) gave a more detailed description of the symptoms of mushroom virus disease.
(1) Slender fruit body, early mushroom, cap and stipe are not balanced, and the stem is a stem. Sometimes due to development blocked, mushroom-shaped dwarf; or mushroom thick, short handle, small mushroom cover, thin and flat, slender stipe, and sometimes sterile screen.
(2) Hyphae degenerate, cells are short and swelled, light yellow, infected fruiting bodies turn from gray to brown, the inside of the stipe is browned, and the mushroom after harvesting rapidly turns brown. Regular brown spots appear on the cap, and brown streaks appear on the stipe. The infected mycelium grows and weakens after covering the soil, or disappears from the surface of the cover soil.
(3) Bacterial pleats become brittle, or leathery, wet and soft, completely spoilage within a few days; there are often watery mucus on the cap and stipe.
(4) The mycelial growth of the diseased mycelium is slow, the mycelia is soft and brown, there is no thick mycelium, or the sterile thread is on the bud. The infected mycelium grows slowly on the agar medium. The hyphae are sparse and tightly attached. The mycelium is granular and the colony edges are not neat. There are different degrees of grooves.
(5) The average size of spores of mushrooms is 4-6um, and the average size of spores of mushrooms is 2um. The cell wall is thin and germination is faster than that of healthy spores. Occurrence characteristic mushroom virus camp parasite parasitic, only living in vivo. It is mainly transmitted through mushroom mycelium and spores, but also through insect mouthparts.
Prevention measures (1) Selection of varieties with strong antiviral ability;
(2) Strict selection of robust mushrooms in the virus-free zone to ensure strains do not carry viruses.
(3) The bed frame material of the old mushroom house should be completely disinfected, and the mushroom hyphae and spores in the material should be killed to prevent the spread of the virus through the bed frame material. The mushroom house of the virus has been found and must be harvested before opening the umbrella to prevent the virus from spreading through the mushroom spores. The old and new mushroom houses should maintain a proper distance.
(4) The paste is sterilized to prepare the culture material, and the mushroom debris is removed.
(5) Using low-dose methyl bromide fumigants (less than 600 TP) or using formaldehyde sterilizers, cooking utensils can also be used or treated for 1 hour at 70°C.
