(2) Mosaic type: short plant with yellowish leaves, mottled yellow-green leaves, few fruits and mottled yellow-green peel.
(3) Stripe type: brown or dark brown necrotic stripes appear on the stems and fruit stalks, and a large number of fallen leaves appear, and finally dry up and die.
(4) Dwarf type: the internodes are shortened, the whole plant is dwarfed, and many branchlets and thin leaves are branched, twisted and shriveled.
(5) Growth point necrosis type: Growth point necrosis and shedding, baldness, more common in "eggplant" and other varieties.
According to the experimental analysis, cucumber mosaic virus (CMV) is the pathogen of heart leaf yellowing and mosaic symptoms, and tobacco mosaic virus (TMV) is the pathogen of stripe disease.
Through virus source identification, it was found that 65% of pepper virus diseases were caused by cucumber mosaic virus, and about 30% were caused by tobacco mosaic virus.
Disease investigation: Two representative pepper plots were selected for investigation 1 time on June 20th, June 30th and July 20th, respectively, and 20 plants were sampled from 5 points for investigation 100 plants * * *, and the investigation results were filled in.