1. bookVolume 67 (2018): Issue 1 (February 2018)
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
access type Open Access

Elliptical Fourier Descriptors of Leaf Outlines: A Tool to Discriminate Among Aquilaria Species (Thymelaeaceae)

Published Online: 05 Oct 2018
Page range: 89 - 92
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
Abstract

Leaf shape analysis of three Aquilaria species was undertaken using Elliptical Fourier descriptors (EFD) within a research plan­ting in tropical Australia. This approach was taken to develop a method for discriminating the species in the absence of repro­ductive traits or genetic analysis and as a morphological scale of leaf variation. Leaf outlines were analysed to distinguish variability between species. Principal components analysis and canonical discriminant analysis were applied to group the spe­cies based on 25 Fourier descriptors. Four components were required to explain 78 % of the variance and the first and second canonical functions discriminated three groups of spe­cies therefore EFD was a useful approach for analysing leaf out­line variability and distinguish species in the genus Aquilaria. This approach provides a rapid method that could assist in the species identification in Aquilaria where reproductive traits are absent.

Keywords

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