Morley and Chao ( 1977) recognize several species native to Japan, including C. Many herbarium vouchers and species descriptions of this complex group are incomplete (Morley 1977).Ĭorylopsis species are widely distributed from Northeast India across China and into Korea, Japan, and Taiwan, with species in the easternmost end of this distribution having the most distinct characters within the genus (Bean and Aniśko 2014 Morley and Chao 1977 Zhang et al. Prior revisions have designated from seven to over 30 species, creating confusion for the nursery industry and public gardens (Bean and Aniśko 2014 Hinkley 2009). is a genus of woody ornamental shrubs in the Hamamelidaceae with a complex taxonomic history. Information gained from this study will further breeding efforts and aid management of germplasm collections of Corylopsis.Ĭorylopsis Siebold & Zucc.
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A dendrogram was generated by unweighted pair group method with arithmetic mean (UPGMA) cluster analysis using the Jaccard similarity coefficient to visualize genetic relationships and ploidy series within taxa. These markers had an average of 7.4 alleles per locus with a range of three to 17 alleles. Seventeen genomic simple sequence repeat markers were developed and used to determine the genetic diversity of Corylopsis. gotoana Makino), pentaploid (unnamed hybrid selection), and hexaploid (C. Representative taxa were selected for root tip cytology, revealing diploid (C.
Flow cytometry revealed a ploidy series of diploid, tetraploid, pentaploid, and hexaploid taxa in Corylopsis with 2C genome sizes ranging from 1.9 pg to 5.7 pg. The objectives of this study were to determine genome size, ploidy, and genetic diversity in Corylopsis. The United States National Arboretum and collaborating gardens in North America maintain a diverse germplasm collection of Corylopsis including cultivated and wild-collected taxa. is a genus of flowering shrubs with few cultivars and little information on genome size, ploidy levels, and genetic relationships among taxa.
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