Two separate experiments were carried out to assess the plum susceptibility to infection by European stone fruit yellows phytoplasmas during a five year period. Commercial varieties /cultivars and new selections grafted on Myrabolan 29C were evaluated in at least two plots of four plants each. Visual inspection and PCR/RFLP identification of phytoplasmas detected an increasing phytoplasma presence in both symptomatic and asymptomatic plants. Eight Japanese plum selections showed ESFY symptoms or pathogen presence in the 50% of the plants and nine selections showed ESFY infection in the 20% of the plants. Only nine selections showed absence of both symptoms and pathogen. Although the European selections/cultivars were not symptomatic, plants belonging to six of these cultivars were positive to phytoplasma presence. The evaluation of cultivar/rootstock combinations indicate phytoplasma presence from the first year after plantation. Two of the rootstocks seems to induce a delay in symptoms appearance and cultivar T.C. Sun resulted the most susceptible to the disease independently from the rootstock employed
Titolo: | Assessment of susceptibility to European stone fruit yellows phytoplasma of new plum variety and of five rootstock/plum variety combinations. |
Autore/i: | Landi F.; A. Prandini; PALTRINIERI, SAMANTA; D. Missere; BERTACCINI, ASSUNTA |
Autore/i Unibo: | |
Anno: | 2010 |
Titolo del libro: | Julius-Kühn-Archiv |
Pagina iniziale: | 378 |
Pagina finale: | 382 |
Abstract: | Two separate experiments were carried out to assess the plum susceptibility to infection by European stone fruit yellows phytoplasmas during a five year period. Commercial varieties /cultivars and new selections grafted on Myrabolan 29C were evaluated in at least two plots of four plants each. Visual inspection and PCR/RFLP identification of phytoplasmas detected an increasing phytoplasma presence in both symptomatic and asymptomatic plants. Eight Japanese plum selections showed ESFY symptoms or pathogen presence in the 50% of the plants and nine selections showed ESFY infection in the 20% of the plants. Only nine selections showed absence of both symptoms and pathogen. Although the European selections/cultivars were not symptomatic, plants belonging to six of these cultivars were positive to phytoplasma presence. The evaluation of cultivar/rootstock combinations indicate phytoplasma presence from the first year after plantation. Two of the rootstocks seems to induce a delay in symptoms appearance and cultivar T.C. Sun resulted the most susceptible to the disease independently from the rootstock employed |
Data prodotto definitivo in UGOV: | 17-feb-2011 |
Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |