Plum pox virus infection level in Prunus species growing along roadsides or in backyards in Vojvodina province

F. Bagi, G. Barać, R. Iličić, Z. Savić, Milan Burmazovic, Viktor Meszaros, T. Popović
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Abstract

The present study was conducted on 106 leaf samples of Prunus species (44 plum, 47 myrobalan plum, 10 apricot, 3 peach, 1 blackthorn, and 1 sour cherry) collected from the Vojvodina province of Serbia and assessed for the presence of Plum pox virus (PPV) with the aim of establishing whether trees growing along roadsides and in backyards could be sources of PPV infection in commercial orchards. Analyses confirmed PPV infection in 68.2%, 38.6%, and 20% of plum, myrobalan plum and apricot samples, respectively. The infection level varied considerably across locations, with 80% noted in Uljma, followed by 69% in Sremska Kamenica, 60% in Becej, 50% in Temerin, 50% in Senta, 40% in Petrovaradin, 31% in Novi Sad, 30% in Susek, and 20% in Subotica. As no difference in infection rates was noted between young and older plum trees, the infections seemed to have occurred in their early life stage. Trees growing along roadsides were infected to a higher extent (89.6%) than those in backyards (66.6%). In some cases, symptomless trees were also proven to be PPV positive, indicating that they are a potentially important source of further virus infections. Due to the widespread presence of the virus, tolerant or hypersensitive cultivars are recommended for planting new orchards.
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伏伊伏丁那省沿路或后院李种的李痘病毒感染水平
本研究对采自塞尔维亚伏伊伏丁那省的106种李属植物(44种李、47种梅、10种杏、3种桃、1种黑刺李和1种酸樱桃)的叶子样本进行了李痘病毒(PPV)检测,目的是确定沿路边和后院生长的树木是否可能是商业果园中PPV感染的来源。结果表明,桃李、梅和杏的PPV感染率分别为68.2%、38.6%和20%。不同地区的感染水平差异很大,乌尔伊马为80%,其次是斯雷姆斯卡卡梅尼卡为69%,别杰为60%,特梅林为50%,圣塔为50%,彼得罗瓦拉丁为40%,诺维萨德为31%,苏塞克为30%,苏博蒂察为20%。由于幼树和老树之间的感染率没有差异,感染似乎发生在它们的早期生命阶段。路边树木(89.6%)感染程度高于后院树木(66.6%)。在某些情况下,无症状树也被证明是PPV阳性,这表明它们是进一步病毒感染的潜在重要来源。由于该病毒广泛存在,建议种植耐受性或超敏感性的品种来种植新果园。
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审稿时长
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