First example of hybridisation between two Australian figs (Moraceae)
Brendan C. Wilde
A D , Susan Rutherford A C , Marlien van der Merwe A , Megan L. Murray B and Maurizio Rossetto A
+ Author Affiliations
- Author Affiliations
A National Herbarium of NSW, Royal Botanic Garden & Domain Trust, Mrs Macquaries Road, Sydney, NSW 2000, Australia.
B Department of Environmental Sciences, University of Technology Sydney, PO Box 123, Broadway, NSW 2007, Australia.
C Present address: Institute of Environment and Ecology, Academy of Environmental Health and Ecological Security, Jiangsu University, Zhenjiang, 212013, PR China.
D Corresponding author. Email: brendanwilde@optusnet.com.au
Australian Systematic Botany 33(5) 436-445 https://doi.org/10.1071/SB19048
Submitted: 13 November 2019 Accepted: 10 May 2020 Published: 15 July 2020
Abstract
The chance discovery of an unusual Ficus specimen near Katherine in the Northern Territory prompted an investigation into hybridisation between two morphologically distinct endemic Australian sandpaper figs, Ficus aculeata A.Cunn. ex Miq. and F. coronulata Miq. In this study, genome-wide scans and morphological measurements were used to investigate the perceived hybridisation by using herbarium and freshly collected samples. Most of the putative hybrids displayed a wide variety of intermediate morphology and some individuals had characteristics consistent with the description of a third species, F. carpentariensis D.J.Dixon. Both genomic and morphometric results provided evidence of naturally occurring hybridisation events within Ficus. Additionally, the findings from this study showed possible taxonomic issues within the Northern Australian sandpaper figs that warrant further investigation.
Additional keywords: DArTseq, genomic, introgression, morphological Ficus.
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