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Qijing Zhang and Dajun Gu

Prunus (Rosaceae) is a large genus with significant economic importance, since it includes a variety of popular stone fruit species [e.g., peach ( Prunus persica ), apricot ( Prunus armeniaca ), almond ( Prunus dulcis ), and sweet cherry ( Prunus

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María Engracia Guerra, Ana Wünsch, Margarita López-Corrales, and Javier Rodrigo

, J. 1965 Growth of unpollinated ovaries of several deciduous fruit species Proc. Amer. Soc. Hort. Sci. 87 163 167 Bailey, C.H. Hough, L.F. 1975 Apricots 367 383 Janick J. Moore J.N. Advances in fruit breeding Purdue University Press Lafayette, IN

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Antonio Carrillo-Navarro, Alfonso Guevara-Gazquez, Margarita Pérez-Jiménez, Leonor Ruiz-García, and José Cos-Terrer

apricots ( Prunus armeniaca L.) reflects their geographic origin and breeding history Tree Genet. Genomes 1 151 165 Okie, W.R. 1998 Handbook of peach and nectarine varieties. Performance in the southeastern United States and index of names. Agriculture

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Antonio J. Felipe

resistance was the primary breeding objective to replace several widespread nematode susceptible almond × peach hybrid rootstocks used for peach production in Spain, especially in replant situations ( Pinochet, 1997 ). All three rootstocks have a high level

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María Engracia Guerra, Ana Wünsch, Margarita López-Corrales, and Javier Rodrigo

breeding programs ( Okie and Hancock, 2008 ; Okie and Ramming, 1999 ). The proportion of flowers that develop into fruit is much lower in japanese plum ( Guerra et al., 2010 ) than in other Prunus species ( Bradbury, 1929 ; Dicenta et al., 2002

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Viji Sitther, Dapeng Zhang, Sadanand A. Dhekney, Donna L. Harris, Anand K. Yadav, and William R. Okie

States are yellow-fleshed, white-fleshed cultivars are being increasingly planted, and a few red-fleshed cultivars (with either yellow or white backgrounds) are available. Use of a limited number of parents in breeding programs has led to reduction in the

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Lisa Alexander

thought ( Dirr, 2009 ). Cold-hardiness of the hybrid fortune’s osmanthus appears to be intermediate to that of its parents ( Dirr, 2009 ), indicating that hybrid breeding may be a promising avenue for improving cold-hardiness in the genus. Germplasm

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Hisayo Yamane, Yukinobu Kashiwa, Tomomi Ooka, Ryutaro Tao, and Keizo Yonemori

(SSH/MOS) and differential screening to identify genes that are expressed preferentially in endodormant buds of japanese apricot. This species of fruit tree was selected for study because its seasonal endodormancy status has been well characterized

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Rachel P. Naegele

has not been reported in other Botrytis –host systems, but is an important consideration when breeding. The use of leaf evaluations as an early indicator of fruit susceptibility could be useful for evaluating perennial crops with a long generation

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Yihua Chen, Peng Jiang, Shivegowda Thammannagowda, Haiying Liang, and H. Dayton Wilde

habit of rose ( Rosa sp.) has been altered by centuries of breeding for the recessive locus recurrent blooming ( Iwata et al., 2012 ). Rb was recently identified as a TFL1 ortholog and rose cultivars with low RoTFL1 expression bloom repetitively