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Bo Wang, Weimin Wu, Xicheng Wang, Zhuangwei Wang, and Yaming Qian

), that commonly exist in distant hybridization of plants lead to low hybridization efficiency ( Widmer et al., 2009 ). Grapes ( Vitis sp.) are a valuable fruit crop. European grapevine ( V. vinifera ) is a major grape cultivated worldwide that is used

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Sadanand A. Dhekney, Zhijian T. Li, Michael E. Compton, and Dennis J. Gray

Genetic engineering of Vitis has emerged as an alternative to conventional breeding for the introduction of desirable traits into elite varieties. The routine use of embryogenic cultures for grapevine transformation ( Gray et al., 2005

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Jason E. Stout, Joan R. Davenport, and R. Troy Peters

st century climate change for the hydrology of Washington State Clim. Change 102 225 260 Evans, R.G. Spayd, S.E. Wample, R.L. Kroeger, M.W. Mahan, M.O. 1993 Water use of Vitis vinifera grapes in Washington Agr. Water Mgt. 23 109 124 Fereres, E

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Jean Carlos Bettoni, Aike Anneliese Kretzschmar, Remi Bonnart, Ashley Shepherd, and Gayle M. Volk

Grape ( Vitis spp.) is one of the most economically important fruit crops cultivated and consumed worldwide ( OIV, 2018 ). Vitis has a rich genetic diversity; there are more than 70 species within the genus, with most of the globally important

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Jiang Lu and Lloyd Schell

Vitis rotundifolia (Muscadine grapes), a native species characterized with multiple resistance to grape diseases and insects, are cultivated throughout the southeastern U.S. for fresh fruit and processing. However, the species falls short of consumer's expectation as fresh fruit due to its seediness and thick skin. However, Vitis vinifera, a predominant Vitis species grown worldwide possesses good fruit characteristics such as seedlessness and edible skin but is susceptible to many diseases. Attempts to produce rotundifolia-vinifera hybrids to combine good fruit quality and disease resistance of both into F1 hybrids have been made by grape breeders for many years. Limited success was only reported when the V. vinifera was used as seed parents. Pollinating seedless vinifera pollen onV. rotundifolia stigma was made in 1993 and 1994. More than 20,000 flowers from 34 cross combinations were pollinated. These crosses were made to see if there is any chance to produce hybrids when muscadine grapes were used as female parent and specifically to introgress the seedlessness from European grapes into muscadine grapes. A few hundred seeds were collected from these crosses and germinated in a greenhouse. Two seedlings were clearly distinguished from the others with morphology intermediate between muscadine and the vinifera grapes, while the rest looked straight muscadine grapes derived from possible contaminated pollination. This conclusion was further confirmed by isozyme and DNA markers. One of the seedlings produced from the cross of `Jumbo' × `Thompson Seedless' grew vigorously and has been setting fruit since 1996. Fruit are mixture of stenospermocarpic and pathonocarpic seedlessness. Fruit setting and pollen viability test indicated that this hybrid is at least partly self-fertile. Many other characteristics of the hybrid, such as leaves, stems, tendrils, time of budbreak, bloom date, and ripen date are intermediate between muscadine and bunch grapes. The hybrid is resistant to Pierce's disease, anthracnose disease, and downy mildew, which are the limited factor to growing V. vinifera in the hot and humid southeastern U.S. This is the first report of a seedless hybrid from V. rotundifolia × V. vinifera.

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Amanda Garris, Lindsay Clark, Chris Owens, Steven McKay, James Luby, Kathy Mathiason, and Anne Fennell

The Eurasian domesticated grape Vitis vinifera is adapted to areas with moderate winter temperatures. Breeding new grapevine cultivars for the continental climate of North America has required the combination of fruit quality traits from V

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Xiu Cai Fan, Hai Sheng Sun, Ying Zhang, Jian Fu Jiang, Min Li, and Chong Huai Liu

Grapevine ( Vitis spp.) is one of the most important fruit crops in the world. More than 70 species of Vitis exist, which are mostly found in the temperate zones of the Northern Hemisphere. These species are distributed mostly in three regions

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Beibei Li, Jianfu Jiang, Xiucai Fan, Ying Zhang, Haisheng Sun, Guohai Zhang, and Chonghuai Liu

The grape ( Vitis L.), one of the most important fruit crops in the world, is grown in a wide range of environments ( Liu et al., 2012 ). It is an important member of Vitaceae and has significant economic value. There are more than 70 species in

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Michael E. Tarter and Stefano Poni

The variate “cluster weight” is an important Vitis vinifera vine yield component and its main subcomponents are berry number and berry weight ( Clingeleffer et al., 2000 ). This variate's values can be affected by factors that include scion

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Susana Boso Alonso, Virginia Alonso-Villaverde Pilar Gago, José L. Santiago, Mariá C. Martínez, and Emilio Rodriguez

The grapevine cultivar Albariño ( Vitis vinifera L.) has long been grown in northwestern Spain and the north of Portugal. The approval of the Appellation Contrôlée (A.C) “Rías Baixas” denomination in northwestern Spain in 1988 ( Ministerio de