Susceptibility of pear cultivars to blossom blast caused by Pseudomonas syringae
1991
Whitesides, S.K. | Spotts, R.A.
Conditions were established for inducing pear (Pyrus communis L.) blossom blast caused by Pseudomonas syringae (Ps) on detached shoots. Highest incidence of infection followed occurrence of a major exotherm in the presence of Ps suspended in water drops on blossom tissue. Eight pear cultivars were evaluated for susceptibility to blossom blast, with the red-fruited 'Beurre d'Anjou' sports 'Gebhart' and 'Columbia' least susceptible and 'Doyenne du Comice', 'Beurre d'Anjou', and 'Beurre Bosc' most susceptible.
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