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Chengyuan Liu, Guoliang Wang, Hui Wang, Tao Xia, Shouzhou Zhang, Qigang Wang, and Yanming Fang

The genus Rosa L. comprises ≈200 species distributed widely throughout the temperate and subtropical regions of the northern hemisphere ( Ku and Robertson, 2003 ; Rehder, 1940 ; Wissemann, 2003 ). However, less than 10 species have likely

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Chao Yu, Le Luo, Hui-tang Pan, Yun-ji Sui, Run-hua Guo, Jin-yao Wang, and Qi-xiang Zhang

The genus Rosa comprises ≈150 species that are widely distributed in diverse climates and habitats throughout the Northern Hemisphere ( Quest-Ritson and Quest-Ritson, 2003 ; Rehder, 1940 ) from subtropical to cold-temperate regions. China’s 95

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Le Luo, Chao Yu, Xuelian Guo, Huitang Pan, and Qixiang Zhang

As one of the biodiversity centers of wild Rosa , China is home to 95 species (65 endemic) of Rosa , accounting for nearly half of the world total ( Ku and Kenneth, 2003 ). The Xinjiang Uygur Autonomous Region is a large and sparsely populated

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Genhua Niu and Denise S. Rodriguez

. Huey’ is used in the western United States ( Pemberton, 2003 ). Rosa × fortuniana is used in areas with year-round temperate climate ( Morrell, 1983 ). In the United States, R . × fortuniana is mainly used in Florida, southeastern, and southwestern

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Agnieszka Masny and Edward Żurawicz

‘Pink Rosa’ is a new late strawberry cultivar from the Research Institute of Horticulture in Skierniewice, Poland broadening the assortment of strawberry cultivars for fresh market. The fruit of ‘Pink Rosa’ are large, regular in shape (wide conical

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Crofton Sloan and Susan S. Harkness

Meilland Star rose cultivars (grade 1) budded onto ‘Dr. Huey’ ( Rosa × hybrida ) rootstock were planted in field beds on a Savannah sandy clay loam soil in Apr. 2005, and 17 W. Kordes Söhne outdoor cut flower rose cultivars (grade 1) were planted in field

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Xianqin Qiu, Hao Zhang, Hongying Jian, Qigang Wang, Ningning Zhou, Huijun Yan, Ting Zhang, and Kaixue Tang

The genus Rosa comprises ≈200 species and 30,000 cultivated varieties, but only 10 to 15 species have contributed to the modern roses ( Cairns, 2007 ; Chen, 2001 ). Compared with the abundant genetic diversity of the wild species, the genetic

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Yan Ma and Junyu Chen

From 1986 through 1993 wild rose species were investigated throughout China to catalog and to characterize the rose germplasm resources in mainland China. Many of the 94 rose species and 144 rose varieties in China have not been extensively utilized. The basic features of Chinese rose species are as follows. (1) There are many valuable and rare Rosa species in China. These species are sources of many unique and outstanding characters such as intense fragrance, white and yellow flower color, recurrent flowering and resistance to stress. More than 80% of the rose species in China are native to only China. (2) Although most Rosa species are still in the wild state, a few species cultivated from very early time have many forms available. (3) The number of rose species gradually increases from Northeast to Southwest China. The distribution centers of Rosa species in China are Sichuan and Yunnan Provinces. Chinese rose species can be introduced and used directly in gardens, or in breeding programs to develop new roses.

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Xianqin Qiu, Hongying Jian, Qigang Wang, Kaixue Tang, and Manzhu Bao

isolated from Rosa multiflora hybrids, and R. hybrida ‘Fentuan’ ( Tang, 2009 ) possesses these genes based on our preliminary work. Therefore, R. hybrida ‘Fentuan’ was employed as the plant material for gene expression pattern analysis. Three clones

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David C. Zlesak, Darcy Ballantyne, Matthew Holen, Andrea Clark, Stan C. Hokanson, Kristen Smith, Jason D. Zurn, Nahla V. Bassil, and James M. Bradeen

develop roses with durable resistance to rose black spot disease. Literature Cited Bolton, A.T. Svejda, F.J. 1979 New race of Diplocarpon rosae capable of causing severe black spot on Rosa rugosa hybrids Can. Plant Dis. Surv. 59 38 Colbaugh, P.F. Crow