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Richard L. Bell and Tom van der Zwet

psylla ( Cacopsylla pyricola Föerster) and control measures are necessary. Observations indicated that fruit of ‘Sunrise’ are also susceptible to damage by codling moth [ Cydia pomonella (L.)], European pear sawfly ( Hoplocampus brevis Klug), and brown

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Carlos Miranda, Jorge Urrestarazu, Luis G. Santesteban, José B. Royo, and Valero Urbina

earliest studies in pear were derived from apple ( Yamamoto et al., 2001 ; Hemmat et al., 2003 ), as apple proved to be highly conserved in pear. However, after the development of SSR derived from asian pear ( P. pyrifolia ) and european pear ( P. communis

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Javier Sanzol and Maria Herrero

. Nakanishi, T. Takasaki, T. 2005 Parthenocarpy and self- and cross-incompatibility in ten European pear cultivars J. Jpn. Soc. Hort. Sci. 74 424 430 Nyeki, J. 1974 Natural parthenocarpy in pear varieties

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Richard L. Bell

al., 1970 ). Cultivars within the European pear species, P. communis L., with moderate to high levels of resistance include the Italian cultivar Spina Carpi ( Briolini et al., 1988 ; Quarta and Ruggioni, 1985 ), ‘Doyenne du Poitiers’ ( Robert et al

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Esmaeil Fallahi, Bahar Fallahi, Michael J. Kiester, and Shahla Mahdavi

), and Western Oregon ( Hemphill et al., 1992 ). Fire blight [ Erwinia amylovora (Burr.)] is a major limiting problem in the production of european pears ( Pyrus communis L.) in the western United States. Fire blight–resistant european pears often are

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Rayane Barcelos Bisi, Rafael Pio, Daniela da Hora Farias, Guilherme Locatelli, Caio Morais de Alcântara Barbosa, and Welison Andrade Pereira

combines the quality of European pear trees ( P. communis ) with the low number of chill hours required by the Asian pear tree ( P. pyrifolia ) ( Chagas et al., 2008 ). Low fruit set is one of the limiting factors in the expansion of pear tree crops in

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Lu Zhang, Robert Howard Beede, Gary Banuelos, Christopher M. Wallis, and Louise Ferguson

induce parthenocarpy. Our result is consistent with earlier grape, Vitis vinifera ( Alva et al., 2015 ), apple, and european pear Pyrus communis L. ( Visser and Clara Marcucci, 1984 ) research demonstrating that parthenocarpy can be stimulated by

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Metka Sisko, Branka Javornik, Aleksander Siftar, and Anton Ivancic

relationships among 145 wild and cultivated individuals of P. communis ; Wünsch and Hormaza (2007) identified 63 European pear cultivars with seven microsatellite loci. According to our knowledge, ≈90 SSR markers are available now for genetic diversity

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Ksenija Gasic, John E. Preece, and David Karp

, Washington State University Tree Fruit Research and Extension Center, Wenatchee, WA Joseph Postman, USDA-ARS, National Clonal Germplasm Repository, Corvallis, OR ANP-0118 (Lanya ® ). Attractive, red-blushed, early-season, fresh-market European pear. Origin

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Yan-xin Duan, Ying Xu, Ran Wang, and Chun-hui Ma

than total fruit Ca concentration alone ( Dris et al., 1998 ; Freitas et al., 2010 ; Lanauskas and Kviklienė, 2006 ; Schumacher and Fankhauser, 1970 ). Although the association between cork spot and mineral concentrations in European pear has been