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Updated: May 16, 2025

Fluorescence-microscopy Screening and Next-generation Sequencing: Useful Tools for the Identification of Genes Involved in Organelle Integrity
Published on: April 13, 2012
Phenotypic and genomic signatures across wild Rosa species open new horizons for modern rose breeding
Bixuan Cheng1, Kai Zhao2, Meichun Zhou1
1State Key Laboratory of Efficient Production of Forest Resources, Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture and School of Landscape Architecture, Beijing Forestry University, Beijing, China.
Abstract:
The cultivation and domestication of roses reflects cultural exchanges and shifts in aesthetics that have resulted in today's most popular ornamental plant group. However, the narrow genetic foundation of cultivated roses limits their further improvement. Wild Rosa species harbour vast genetic diversity, yet their utilization is impeded by taxonomic confusion. Here we generated a phased and gap-free reference genome of Rosa persica for phylogenetic and population genomic analyses of a large collection of Rosa samples. The robust nuclear and plastid phylogenies support most of the morphology-based traditional taxonomy of Rosa. Population genomic analyses disclosed potential genetic exchanges among sections, indicating the northwest and southwest of China as two independent centres of diversity for Rosa. Analyses of domestication traits provide insights into selection processes related to flower colour, fragrance, double flower and resistance. This study provides a comprehensive understanding of rose domestication and lays a solid foundation for future re-domestication and innovative breeding efforts using wild resources.
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