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Review Article|01 Jul 2020|OPEN
Germplasm resources and genetic breeding of Paeonia: a systematic review
Yong Yang1,2,3,4 , Miao Sun1,2,3,4 , Shanshan Li,1,5
1Key Laboratory of Plant Resources/Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, China
2College of Landscape Architecture, Beijing Forestry University, 100083 Beijing, China
3Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding, 100083 Beijing, China
4National Engineering Research Center for Floriculture, 100083 Beijing, China
5University of Chinese Academy of Sciences, 100049 Beijing, China

Horticulture Research 7,
Article number: 107 (2020)
doi: https://doi.org/10.1038/s41438-020-0332-2
Views: 1086

Received: 30 Mar 2020
Revised: 04 May 2020
Accepted: 07 May 2020
Published online: 01 Jul 2020

Abstract

Members of the genus Paeonia, which consists of globally renowned ornamentals and traditional medicinal plants with a rich history spanning over 1500 years, are widely distributed throughout the Northern Hemisphere. Since 1900, over 2200 new horticultural Paeonia cultivars have been created by the discovery and breeding of wild species. However, information pertaining to Paeonia breeding is considerably fragmented, with fundamental gaps in knowledge, creating a bottleneck in effective breeding strategies. This review systematically introduces Paeonia germplasm resources, including wild species and cultivars, summarizes the breeding strategy and results of each Paeonia cultivar group, and focuses on recent progress in the isolation and functional characterization of structural and regulatory genes related to important horticultural traits. Perspectives pertaining to the resource protection and utilization, breeding and industrialization of Paeonia in the future are also briefly discussed.