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Symptoms of Chinese cabbage virus disease
Symptoms of Chinese cabbage virus disease: the seedlings of the seedlings begin to show veins and chlorosis along the veins, followed by mosaics and shrinkage. The adult plants are different in weight and weight. Except that the diseased plants are dwarfed, the leaves are thick, pale green or yellow and green. The leaves of the seriously diseased plants are shrunk into a group, the leaves are hard and brittle, the leaves are densely brown spots, and the leaves on the leaves are also There are brown necrotic spots, cracks, severe dwarf, deformity, no ball. The mild diseased plant is deformed, the dwarf is lighter, and sometimes the blade is half-wrapped and can partially form a ball. There are often many gray spots on the inner blade of the ball. The roots of the seriously ill strains are mostly underdeveloped, and they must be few, and the roots of the diseased roots are yellowish brown. The seedlings are seriously damaged, the peduncle is not taken out and died, the incidence is light, the peduncle is bent and deformed, the height is less than half of the normal, and the peduncle has vertical and horizontal ruptures. Premature senescence, rarely strong, or small fruit pods, grain is not full, germination rate is low, and germination is inferior.
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