The evaluation of occurrence of PPV symptoms in young peach orchard according to the used rootstock
Gogolkova, K., Mendelova Univ., Lednice (Czech Republic). Ustav Ovocnictvi | Horsakova, J., Mendelova Univ., Lednice (Czech Republic). Ustav Ovocnictvi | Ondrasek, I., Mendelova Univ., Lednice (Czech Republic). Ustav Ovocnictvi | Krska, B., Mendelova Univ., Lednice (Czech Republic). Ustav Ovocnictvi
The degree of plum pox virus (PPV) occurrence was monitored in a young peach orchard during 2010-2011. This study evaluates the percentage of infected trees in 2010 as well as the intensity of PPV symptoms in 2011 in two peach varieties, Royal Glory and Symphony, grafted on seven different rootstocks of Prunus species after the natural infection. The different intensity of PPV symptoms was proved on infected parts such as flowers, leaves, fruits and from rootstocks' point of view. In 2010 PPV symptoms were most often detected in the variety Royal Glory grafted on the rootstock Julior where 100% of trees were infected. No visible symptoms were observed in trees of variety Symphony on Pumiselect rootstock. As for the rootstocks evaluation, PPV symptoms were most numerous in trees grafted on the MRS 2/5 rootstock (94.78%), at least on the Lesiberian rootstock (28.47%). The intensity of PPV symptoms on flowers, leaves and fruits in each combination was evaluated in 2011. Generally, the PPV symptoms were present mainly on flowers and less on fruits.
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