Genome Size Estimation of Viburnum (Adoxaceae) Species by Using Flow Cytometry*

doi:10.7677/ynzwyj201414022

Abstract

Abstract:

Viburnum species are widely used as ornamental shrubs in gardens and their hybrids with brilliant horticultural traits are increasingly popular worldwide. In this study, genome sizes of fourteen Viburnum species were estimated by using flow cytometry. Genome size for diploids ranged from 255pg in Vschensianum to 426pg in Vmacrocephalum form. keteleeri. And Vmacrocephalum form. keteleeri also had a more asymmetrical karyotype which may reflect its breeding history. The genome size of tetraploid species Vodoratissimum (762pg) was unusually more than twice as big as those of other diploid species, which revealed that polyploidization in this genus may be not remote in its evolution. These results lay a foundation for further research in the cytogenetics and taxonomy of Viburnum and provide useful insight into future hybridization efforts for this genus.

Key words: Viburnum, Flow cytometry, Genome size, Variation, Chromosome

CLC Number:

Q 75

ZHANG Ning-Ning, YANG Jing, SUN Wei-Bang. Genome Size Estimation of Viburnum (Adoxaceae) Species by Using Flow Cytometry*[J]. Plant Diversity, 2014, 36(06): 730-736.

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