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Abstract ▼ AI-Helper

The incidence of virus disease was 5.3% in average for 30-day old seedlings of red pepper and 21.2% in average for 50-day old seedlings in the greenhouse. The disease incidence ranged from 23.3% to 83.3% in average at 20-day after transplanting in the field. The appearence of virus disease symptom w...

The incidence of virus disease was 5.3% in average for 30-day old seedlings of red pepper and 21.2% in average for 50-day old seedlings in the greenhouse. The disease incidence ranged from 23.3% to 83.3% in average at 20-day after transplanting in the field. The appearence of virus disease symptom was 39.4% for mosaic and 34.8% for streak ruffling in the 30-day old seedlings, however, the major symptoms were changed as mosaic by 38.2% and rugose by 58.4% in the 50-day old seedlings in the greenhouse. Virus disease symptoms among mild mosaic, mosaic and rugose were changed seasonally from mild mosaic to mosaic and from mosaic to rugose in the field. However, after rainy season, the symptoms were changed from rugose to mosaic and from mosaic to mild mosaic. The necrosis on the stem of red pepper was showed at 40 days after transplanting in the field, and it was 15.4% next to that of mosaic and rugose. The occurrence of cucumber mosaic virus and undetermined viruses was 12.5% and 26.9%. respectively. The major virus occurring in red pepper on the growing season was tobacco mosaic virus which had an infection rate of 89.1% in this survey.

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