Reference Report for SoyBase73101119
| Title: | Virus diseases of soybean in Bulgaria |
| Authors: | Khalid, S., Markov, M. |
| Source: | Rasteniev dni Nauki 1995, 32(4):105-107 |
| Abstract: | Soybean mosaic potyvirus (SMV) is reported as the most common virus of soyabeans in Bulgaria. The cultivars tested were classified as resistant (Merit), moderately resistant (Frau Braun) and susceptible (Amsoy, Chipeva, Cland, Clay, Hodson, Hordom, Multi fair, Porax, Steels, Violeta and Williams). Seed transmission depended on the cultivar. No connection between seed transmission and seed coat mottling was observed. Yield reduction in Violeta was 43.1% and in Williams 19.5%. Alfalfa mosaic alfamovirus was isolated from plants showing yellowing of young leaves, red colouring of old ones and occasionally vein necrosis. Tomato ringspot nepovirus was isolated from one plant of the cultivar Asgrow 2656 introduced from the USA. Tobacco ringspot nepovirus was observed at the Institute of Introduction and Plant Resources at Sadovo, Bulgaria. Up to now, the disease has been described in Bulgaria on tobacco, but the virus has not been isolated. The most typical symptom of both ringspot viruses was bud blight. Peanut mottle potyvirus was isolated from 2 plants of the cultivar S 1346 introduced from the USA. The symptoms were chlorotic rings and flecks with a diam. of 2-3 mm and line patterns. The virus was transmitted through seed in soyabean. It is thought that damage caused by the latter 3 viruses to soyabean, tomato, tobacco, groundnut and other crops are difficult to predict. |
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