Virus diseases of soybean in Thailand
1980
Iwaki, M. | Pornpod Thongmeearkom | Tsuchizaki, T. | Honda, Y. | Nonglak Sarindu | Luck Vonghiranpinyo | Tochihara, H. | Nuanchan Deema
Various kinds of virus diseases were observed on soybean plants in the course of surveys on soybean virus diseases carried out in Thailand and Japan. Among these viruses, properties of soybean mosaic virus, peanut mottle virus, Indonesian soybean dwarf virus, and soybean crinkle leaf virus will be presented. Soybean mosaic virus (SMV) caused mosaic and leaf malformation in soybean plant, and was transmitted by sap inoculation and by aphid, Aphis glycines, in a non-persistent manner. SMV infected systematically 5 plant species, namely, Glycine max, Phaseolus angularis, P. vulgaris cv. Tsurunashi Kintoki, Vigna sinensis (Leguminosae) and Nicotiana clevelandii (Solanaceae), and induced only local infection without symptoms in 8 plant species including Chenopodiaceae, Amaranthaceae, Aizoaceae, Leguminosae and Solanaceae among the 27 species belonging to the 9 families tested. SMV which consists of filamentous flexuous particles, about 800 nm long, was infective after dilution to 10-6, after 10 min at 55 C (not 60 C) or after being kept for 14 days at 20 C (not 21 days) in the sap of infected soybean leaves using Tsurunashi Kintoki bean as assay host. It reacted with antiserum against SMV originating from Japan. Peanut mottle virus (PnMV) induced mosaic in soybean, and was transmitted by sap inoculation, by aphid, Aphis glycines, in a non-persistent manner, and through seed of soybean.
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