Systematic morphology, anatomy and numerical evaluation of Clerodendrum L.in Peninsular Malaysia
<p>The aim of this study was to investigate the Clerodendrum interspecific variations</p><p>toward morphological and anatomical characters in order to determine their taxonomic</p><p>significance. Both anatomical and morphological...
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| Format: | thesis |
| Language: | eng |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://ir.upsi.edu.my/detailsg.php?det=8496 |
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| Summary: | <p>The aim of this study was to investigate the Clerodendrum interspecific variations</p><p>toward morphological and anatomical characters in order to determine their taxonomic</p><p>significance. Both anatomical and morphological characters of taxonomic significance</p><p>were then used to construct dichotomous key for species of the genus. The distribution</p><p>of the genus in designated locations were also recorded and mapped. A total number of</p><p>16 Clerodendrum species and Tectona grandis as an out-group species were collected</p><p>from several reserved forest in Peninsular Malaysia. The herbarium voucher specimens</p><p>were carefully examined and the characters were recorded. Anatomical slide of leaf</p><p>transverse sections was prepared using modification of standard microtechnique</p><p>method. Observed morphological and anatomical data were numerically analyse using</p><p>MultiVariate Statistical Package (MVSP) and Phylogeny Analysis Using Parsimony</p><p>(PAUP). Result shows morphological character are of taxonomic significance at genus</p><p>level. Leaf shape, inter 2nd vein, leaf venation, petiole length and petiole hair proved to</p><p>be of diagnostic characters. In contrary, anatomical characters are highly significant at</p><p>species level. Type of midrib outline, petiole vascular bundle and presence of subsidiary</p><p>bundles proved to be unique toward almost all members. Multivariate analysis of both</p><p>morphological and anatomical characters shows an overall high GGSc at 0.66 0.97.</p><p>PAUP analysis however, favour morphological characters over anatomical characters</p><p>with CI, RI and HI recorded at 0.6121, 0.420 and 0.3879 respectively. Therefore, these</p><p>findings support the classification of Olmstead in 1995 and partly of Yuan et. al, in 2010</p><p>based on molecular classification. It is concluded, both morphological and anatomical</p><p>characters are of high taxonomic value but at different taxanomic levels. C. chinense</p><p>and three unnamed species are subjected to further study for species confirmation. This</p><p>study implicates that both morphological and anatomical characters can be used to</p><p>complements current classification of Clerodendrum and serve as important taxonomic</p><p>references.</p> |
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