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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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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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Abstract

The viability of fresh pollen from 6 Rosa species (Rosa spinosissima L., R. fedtschenkoana Regel, R. pendulina L., R. arkansana Porter, R. Carolina L., R. virginiana Miller), one botanical variety (R. spinosissima altaica Rehd.) and 3 cultivars (‘Betty Bland’, ‘George Will’, ‘Prairie Princess’) were evaluated. Correlation between pollen staining and germination was positive and significant, but absolute pollen viability was found to be a better indicator of viability than staining. Rosa spinosissima and R. fedtshenkoana were considered to be the best pollen parents from the genotypes sampled.

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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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. 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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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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‘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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Roses are used as ornamental plants in gardens, as cut flowers, and as potted flowers but also have economic value as sources of essential oils for perfumes and cosmetics ( Yan et al., 2014 ; Zhou et al., 2020a ). The genus Rosa comprises ≈200

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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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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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