Citrus split skin disease is one of the important citrus diseases caused by the citrus peeling virus. Split skin disease can infect many species and varieties of citrus plants and there are great differences in pathological responses. Most of the rootstock varieties such as sour orange, red orange, sweet orange, lime, and rough lemon all had no visible pathology. Citrus plants with anthraquinones, oranges, and limes as the anvil are significantly ill and are seriously affected. Sick seedlings show no symptoms at seedling stage, and the time required for bark cracking in field plants is generally 4 to 8 years after planting.
Damage symptoms:
The bark of the rootstock part of the damaged plant was cracked longitudinally, part of the bark was peeled off, the plant was dwarfed, the shoot was less, the flowering was more, the fruit was less, and the latter part was dead. In the 4 to 6 months after infection with lanlap limes and medlars, long macules appear on the shoots, and the bark of the lesions cracks longitudinally.
After 3 to 6 months after infection, Toona sinensis leaves medulla bent backwards, and the main veins and lateral veins on the back of the leaves were ligated and cracked. When the citrus was infected by the attenuated strain of the virus, only the rootstock was dwarfed and there was no cracked skin.
It indicates that the plant has Alexandria 861 torreya and Java 37. Peripheral tissue grafting inoculated 2 to 3 months later, on the back of the main leaves of the Toona sinensis, lateral veins on the dark brown network symptoms; in Java thirty-seven for erect leaves, the symptoms of necrosis.
way for spreading:
Psoriatic diseased strains and cryptovirus-infected plants are the source of infection for this disease. In addition to the spread of disease through the seedlings and scion, disease-contaminated tools and hands can also be transmitted in contact with healthy phloem.
Control methods:
1 Cultivate disease-free seedlings. The mother tree was identified with the Etrusca camphora Arizona 86l strain as an indicator plant, demonstrating that disease-free individuals can reproduce by earing, and that non-toxic plants can also be cultivated by stem-tip grafting methods.
2 Grafting knife or pruning shears, etc., can be disinfected with 1% sodium hypochlorite solution or 10% bleaching water solution 10 times. Immerse the tool in the disinfectant solution or wipe with a cloth and wipe the blade for 1 to 2 seconds. Rinse and wipe with water. use.
3 Implement phytosanitary measures to prevent proliferation.
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