ISHS Acta Horticulturae 273: V International Workshop on Fireblight
BIOLOGICAL CONTROL OF FIRE BLIGHT OF PERRY PEAR : COMPARATIVE EVALUATION OF ANTAGONISTS ON IMMATURE FRUIT SLICES, MICROPROPAGATED SHOOTS AND ORCHARD BLOSSOM |
| Authors: | S.L. Nicholson, D.C. Sigee, H.A.S. Epton |
| Abstract:
Surface washings from leaves, bark and blossoms of orchard perry pears were plated, and strains of Erwinia herbicola, fluorescent pseudomonads and yeasts were selected to test for antagonistic activity against Erwinia amylovora. Using an immature pear fruit assay, approximately 25% of all E. herbicola and fluorescent pseudomonad strains so far tested have shown clear antagonism, while no yeasts have been found positive. Strains of E. herbicola were also tested for antagonistic activity against E. amylovora strain Ea519 using micropropagated shoots of pear cv. ‘Caucasia’, and on blossoms in a perry pear orchard. | |
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