Isac M, Preda S, Marcu M
Research Institute for Pomology, Pitesti-Maracineni, Romania.
Acta Virol. 1998 Sep;42(4):233-4.
Plum pox virus (PPV) is widely spread by natural vectors present in plum orchards. The efficiency of transmission is dependent on the frequency of the occurrence of vectors and the cultivar susceptibility to this pathogen. Having in view that PPV has a wide range of annual and multiannual host plants and vectors, there is great concern for obtaining PPV-resistant cultivars. This report deals with the following vectors: Hyalopterus pruni, Brachycaudus cardui, Brachycaudus helichrysi. Myzus persicae and Phorodon humuli aphids, and Aculus fockeni mite. Seven different cultivars of Prunus domestica were utilized. To assess the virus transmission rate, 50-100 individual vectors per tree were used. The treatment of the trees was performed every four weeks and then the disease symptoms were observed. PPV was transmitted by all vectors studied, the rate ranging in dependence on the susceptibility of cultivars used. Thus, in cvs. Centenar, Pescarus, d'Agen, Stanley and Tuleu Gras, the transmission rate ranged from 20% to 60%, while in susceptible cvs. Vanat romanesc and Vanat de Italia--from 40% to 80%.
李痘病毒（PPV）通过李园中存在的自然传播媒介广泛传播。传播效率取决于传播媒介的出现频率以及品种对这种病原体的易感性。鉴于PPV有广泛的一年生和多年生寄主植物及传播媒介，人们非常关注获得抗PPV的品种。本报告涉及以下传播媒介：李短尾蚜、卡氏短尾蚜、蜡菊短尾蚜、桃蚜、李瘤蚜和李始叶螨。使用了7个不同的欧洲李品种。为评估病毒传播率，每棵树使用50 - 100只个体传播媒介。每隔四周对树木进行处理，然后观察病害症状。所有研究的传播媒介都能传播PPV，传播率因所用品种的易感性而异。因此，在Centenar、Pescarus、阿让、斯坦利和图勒格拉斯品种中，传播率在20%至60%之间，而在易感品种Vanat romanesc和Vanat de Italia中，传播率在40%至80%之间。
