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José Egea, Manuel Rubio, José A. Campoy, Federico Dicenta, Encarna Ortega, María D. Nortes, Pedro Martínez-Gómez, Antonio Molina, Antonio Molina Jr, and David Ruiz

also characterized by their adaptation to climatic conditions in the southeast of Spain and their resistance to sharka [ Plum pox virus (PPV)], a serious limiting factor for apricot fruit production in affected areas ( Kölber, 2001 ). ‘Mirlo Blanco

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David Ruiz, Manuel Rubio, Pedro Martínez-Gómez, Jesús López-Alcolea, Federico Dicenta, Encarna Ortega, María Dolores Nortes, Antonio Molina, Antonio Molina Jr., and Jose Egea

‘Cebasred’ and ‘Primorosa’ are very early-season ripening apricot cultivars ( Prunus armeniaca L.) which join high productivity, high fruit quality and attractiveness, with resistance to Plum pox virus (PPV), a valuable characteristic due to the

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José Egea, Jose A. Campoy, Federico Dicenta, Lorenzo Burgos, Jose L. Patiño, and David Ruiz

cultivars. In addition, they have a reduced need for thinning, which reduces the cost of cultivation. Plum pox virus resistance. Sharka disease, caused by the Plum pox virus (PPV), is a serious limiting factor for temperate fruit production in those areas

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Bayram Murat Asma

.58 ± 3.9 mm in length and 1.66 ± 0.2 mm width when sampled in Aug. 2011. Plum pox virus resistance Sharka, caused by PPV, is an important disease for plum, apricot, cherry, and peach as well as other Prunus species. It is known that the apricot

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Marek Szymajda and Edward Żurawicz

reaching harvest maturity. The tree grows moderately vigorously and comes early into bearing fruit. ‘Kalipso’ is tolerant to Plum pox virus (PPV), a causal agent of sharka (plum pox) disease. With standard orchard protection, the flowers, shoots, and

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Bayram Murat Asma, Zehra Tuğba Murathan, Tuncay Kan, Fırat Ege Karaat, Ogün Birhanlı, and Abdullah Erdoğan

are medium in size, dark green in color, and narrow in shape. Leaf base is truncate in shape and the angle of the tip is acute. Leaf margins are medium serrated. Petioles have an average three to five small glands. Plum pox virus resistance. Plum pox

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Beatrice Nesi, Debora Trinchello, Sara Lazzereschi, Antonio Grassotti, and Barbara Ruffoni

-PCR method for detection of Plum Pox Virus in stone fruit trees. RT-PCR has been used in Lilium to compare the efficiency of the ELISA test in several plants of three lily cultivars of field-grown plants ( Niimi et al., 2003 ) but has not been applied to

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Noémi Makovics-Zsohár, Magdolna Tóth, Dezső Surányi, Szilvia Kovács, Attila Hegedűs, and Júlia Halász

productivity was confirmed to be the only characteristic significantly improved by this strategy ( Surányi, 2006a ). Analysis of 50 ‘Besztercei’ clones from a germplasm collection in Cegléd revealed diversity in 10 morphological traits and Plum pox virus (PPV

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Alexis K. Nagel, Guido Schnabel, Cesar Petri, and Ralph Scorza

, plum, and papaya have shown resistance to the citrus tristeza virus ( Dominguez et al., 2002 ), plum pox virus ( Malinowski et al., 2006 ), and papaya ringspot virus ( Lius et al., 1997 ), respectively. Plant defense lectins have become a promising

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Cecilia E. McGregor, Douglas W. Miano, Don R. LaBonte, Mary Hoy, Chris A. Clark, and Guilherme J.M. Rosa

) and this is probably also true for resistant plants. The induction of ribosomal protein (RP) genes during potyvirus infection of susceptible hosts has been described for plum pox virus (PPV) and TuMV ( Dardick, 2007 ; Yang et al., 2007 ). We did not