"RIV/25271121:_____/11:#0000188" . "The aim of this work was to determine the level of resistance of landraces and prospective newly bred Czech pear cultivars against Erwinia amylovora in comparison with the commercially grown pear cultivars in the climatic conditions of the Czech Republic. Four landraces \u00B4Libovicka maslovka\u00B4, \u00B4Krvavka moravska\u00B4, \u00B4Rihova bezjaderka\u00B4, \u00B4Solanka\u00B4, two Czech newly bred cultivars \u00B4Bohemica\u00B4, \u00B4Dicolor\u00B4 and four cultivars from the world pear collection \u00B4Beurre Bosc\u00B4, \u00B4Conference\u00B4, \u00B4Alexander Lucas\u00B4 and \u00B4Williams\u00B4 were included in the experiment. Three-year-old trees on pear seedling rootstock were used for tests. The experiment was established in a screen-house covered with insect proof net. The artificial inoculation of one year old shoots was carried out in the phenological phase of intensive extension growth in suitable climatic conditions (temperature > 15\u00B0C, relative humidity > 75%) by removal of the apical part of the shoot tip with scissors dipped in a suspension containing 10 power of 6 cfu/ml E. amylovora. Subsequently, a 3 \u00B5l drop of inoculum at the same concentration was applied to the cut tissue with a pipette. Calculated intensity of infection was consequently converted to a 6-point evaluation scale: highly resistant 0.0 - 7.0%, resistant 7.1 - 13.0%, medium resistant 13.1 \u2013 26.0%, medium susceptible 26.1 - 60.0%, susceptible 60.1 \u2013 80.0% and highly susceptible 80.1 \u2013 100.0%. Evaluation of obtained results proved a higher level of resistance only in the case of cultivar \u00B4Bohemica\u00B4 (8.9%), which was in our conditions higher than the resistance of \u00B4Alexander Lucas\u00B4 (17.2%). Cultivars \u00B4Solanka\u00B4 (26.6%), \u00B4Conference\u00B4 (39.8%), \u00B4Beurre Bosc\u00B4 (41.4%) and \u00B4Krvavka moravska\u00B4 (52.2%) were evaluated as a medium susceptible. Cultivars \u00B4Williams\u00B4 (62.3 %), \u00B4Rihova bezjaderka\u00B4 (83.3%), \u00B4Libovicka maslovka\u00B4 (100%) and \u00B4Dicolor\u00B4 (100%) were evaluated as susceptible and highly susceptible. The obtained results are preliminary and the tests will continue in the future" . "Korba, Josef" . . "234921" . "Testing of Resistance of Pear Cultivars after Artificial Inoculation with Erwinia amylovora in Field Conditions"@en . . . . "RIV/25271121:_____/11:#0000188!RIV13-MZE-25271121" . . "Testing of Resistance of Pear Cultivars after Artificial Inoculation with Erwinia amylovora in Field Conditions" . . "P(QH91148)" . . "\u0160illerov\u00E1, Jana" . . "0567-7572" . "BE - Belgick\u00E9 kr\u00E1lovstv\u00ED" . . . "Testing of Resistance of Pear Cultivars after Artificial Inoculation with Erwinia amylovora in Field Conditions"@en . . "3"^^ . "2"^^ . "fire blight; susceptibility; infection; Pyrus; cultivar"@en . "Papr\u0161tein, Franti\u0161ek" . "4"^^ . "Sedl\u00E1k, Ji\u0159\u00ED" . "Testing of Resistance of Pear Cultivars after Artificial Inoculation with Erwinia amylovora in Field Conditions" . "[299B158D8B23]" . . . . "Acta Horticulturae" . . . "896" . . . "http://www.actahort.org/books/896/896_48.htm" . "The aim of this work was to determine the level of resistance of landraces and prospective newly bred Czech pear cultivars against Erwinia amylovora in comparison with the commercially grown pear cultivars in the climatic conditions of the Czech Republic. Four landraces \u00B4Libovicka maslovka\u00B4, \u00B4Krvavka moravska\u00B4, \u00B4Rihova bezjaderka\u00B4, \u00B4Solanka\u00B4, two Czech newly bred cultivars \u00B4Bohemica\u00B4, \u00B4Dicolor\u00B4 and four cultivars from the world pear collection \u00B4Beurre Bosc\u00B4, \u00B4Conference\u00B4, \u00B4Alexander Lucas\u00B4 and \u00B4Williams\u00B4 were included in the experiment. Three-year-old trees on pear seedling rootstock were used for tests. The experiment was established in a screen-house covered with insect proof net. The artificial inoculation of one year old shoots was carried out in the phenological phase of intensive extension growth in suitable climatic conditions (temperature > 15\u00B0C, relative humidity > 75%) by removal of the apical part of the shoot tip with scissors dipped in a suspension containing 10 power of 6 cfu/ml E. amylovora. Subsequently, a 3 \u00B5l drop of inoculum at the same concentration was applied to the cut tissue with a pipette. Calculated intensity of infection was consequently converted to a 6-point evaluation scale: highly resistant 0.0 - 7.0%, resistant 7.1 - 13.0%, medium resistant 13.1 \u2013 26.0%, medium susceptible 26.1 - 60.0%, susceptible 60.1 \u2013 80.0% and highly susceptible 80.1 \u2013 100.0%. Evaluation of obtained results proved a higher level of resistance only in the case of cultivar \u00B4Bohemica\u00B4 (8.9%), which was in our conditions higher than the resistance of \u00B4Alexander Lucas\u00B4 (17.2%). Cultivars \u00B4Solanka\u00B4 (26.6%), \u00B4Conference\u00B4 (39.8%), \u00B4Beurre Bosc\u00B4 (41.4%) and \u00B4Krvavka moravska\u00B4 (52.2%) were evaluated as a medium susceptible. Cultivars \u00B4Williams\u00B4 (62.3 %), \u00B4Rihova bezjaderka\u00B4 (83.3%), \u00B4Libovicka maslovka\u00B4 (100%) and \u00B4Dicolor\u00B4 (100%) were evaluated as susceptible and highly susceptible. The obtained results are preliminary and the tests will continue in the future"@en . .