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1980至1982年的试验结果表明,北京郊区番茄抹上主要病毒类型是烟草花叶病毒(TMV),其次为黄瓜花叶病毒(CMV),以及部分由它们的复合侵染所造成的花叶、厥叶和茎坏死条斑等症状,其中以 TMV 起主导作用,它占总病毒数的50%以上。用测定 TMV 浓度的增量来估计不同组合接种的作用可以看出,单独侵染 TMV 的呈现系统花叶症、疱斑和部分叶片畸形;混合侵染的则表现一般:重复侵染的比前两种处理的症状表见更轻些,而单独侵染 CMV 的症状则表现最轻。不同方式组合的TMV 枯斑数量测定结果也同上述症状表现一致。症状的轻重与枯斑数量的多少成正比。单独侵染 TMV 的不同稀释度(5 mg/ml)的枯斑数量,比两种复合侵染的多。用数学方法所得 TMV 的致病性稀释曲线图同上述结果一致。由于复合侵染中CMV 对 TMV 浓度的增量产生一定的抑制作用,因此,在症状的表现上和枯斑数量也相应减轻和减少。
Tests from 1980 to 1982 showed that the major virus types in tomatoes in suburban Beijing were TMV, followed by cucumber mosaic virus (CMV) and mosaic flowers caused by their combined infection, Jue leaf and stem necrosis streaked and other symptoms, which play a leading role in TMV, which accounts for more than 50% of the total number of viruses. Estimating the effect of different combinations of inoculation with the determination of the increase in TMV concentration shows that mosaic virus, blister and partial leaf deformities were present in TMV alone; mixed infection was generally manifested as: The symptoms of both treatments were less severe, while the symptoms of CMV alone were the lightest. The combination of different modes of TMV spot number determination results with the performance of the above symptoms. The severity of symptoms is proportional to the number of dead spots. The number of dead spots at different dilutions (5 mg / ml) infected with TMV alone was more than that of the two combinations. The pathogenic dilution curve of TMV obtained mathematically is consistent with the above results. Due to the inhibitory effect of CMV on the increment of TMV in the composite infection, the number of symptoms and the number of dead spots are correspondingly reduced and decreased.