Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines
This study compared the morpho-anatomical characters of two horticulturally important hoyas endemic to the Philippines viz., Hoya incrassata and Hoya soligamiana. Fresh cuttings were used for morphological and anatomical measurements. Free hand sections were taken from leaves, shoots and roots for d...
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| Format: | Article |
| Language: | English |
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University of Ruhuna
2018-06-01
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| Series: | Ruhuna Journal of Science |
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| Online Access: | http://rjs.ruh.ac.lk/index.php/rjs/article/download/211/183 |
| _version_ | 1828307117065371648 |
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| author | D.S. Salas E.B. Sinamban D.P. Buenavista |
| author_facet | D.S. Salas E.B. Sinamban D.P. Buenavista |
| author_sort | D.S. Salas |
| collection | DOAJ |
| description | This study compared the morpho-anatomical characters of two horticulturally important hoyas endemic to the Philippines viz., Hoya incrassata and Hoya soligamiana. Fresh cuttings were used for morphological and anatomical measurements. Free hand sections were taken from leaves, shoots and roots for determination of structural differences. Leaf pigments were cleared to observe the venation and stomatal arrangement. The results showed that hoyas differ in their leaf shape and texture, flower colour, and the inflorescence shape and position. H. soligamiana has glabrous lanceolate leaves, whitish to creamy petals, purplish to pink inner and outer coronal lobes, and whitish to pink fused sepals. H. incrassata has coriaceous lance-ovate leaves, whitish to yellowish fused petals, yellow inner coronal lobes, reddish to orange outer coronal lobes, and fused sepals. The measured anatomical traits in the cross sections of roots and stems of the two Hoya species did not differ with the exception of stomatal types and arrangement in the leaves. The pigment clearing of the leaves showed that H. incrassata has sunken cyclocytic stomata while H. soligamiana has actinocytic stomata. Morpho-anatomical information provides taxonomic value for identifying and classifying the two Hoya species. |
| first_indexed | 2024-04-13T14:53:05Z |
| format | Article |
| id | doaj.art-0b47c3f31a0840b0b92984d48b17bcd6 |
| institution | Directory Open Access Journal |
| issn | 2536-8400 2536-8400 |
| language | English |
| last_indexed | 2024-04-13T14:53:05Z |
| publishDate | 2018-06-01 |
| publisher | University of Ruhuna |
| record_format | Article |
| series | Ruhuna Journal of Science |
| spelling | doaj.art-0b47c3f31a0840b0b92984d48b17bcd62022-12-22T02:42:31ZengUniversity of RuhunaRuhuna Journal of Science2536-84002536-84002018-06-019111210.4038/rjs.v9i1.34Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, PhilippinesD.S. Salas0E.B. Sinamban1D.P. Buenavista2Department of Biology, Central Mindanao University, University Town, Musuan, Bukidnon 8710, Republic of the PhilippinesDepartment of Biology, Central Mindanao University, University Town, Musuan, Bukidnon 8710, Republic of the PhilippinesDepartment of Biology, Central Mindanao University, University Town, Musuan, Bukidnon 8710, Republic of the PhilippinesThis study compared the morpho-anatomical characters of two horticulturally important hoyas endemic to the Philippines viz., Hoya incrassata and Hoya soligamiana. Fresh cuttings were used for morphological and anatomical measurements. Free hand sections were taken from leaves, shoots and roots for determination of structural differences. Leaf pigments were cleared to observe the venation and stomatal arrangement. The results showed that hoyas differ in their leaf shape and texture, flower colour, and the inflorescence shape and position. H. soligamiana has glabrous lanceolate leaves, whitish to creamy petals, purplish to pink inner and outer coronal lobes, and whitish to pink fused sepals. H. incrassata has coriaceous lance-ovate leaves, whitish to yellowish fused petals, yellow inner coronal lobes, reddish to orange outer coronal lobes, and fused sepals. The measured anatomical traits in the cross sections of roots and stems of the two Hoya species did not differ with the exception of stomatal types and arrangement in the leaves. The pigment clearing of the leaves showed that H. incrassata has sunken cyclocytic stomata while H. soligamiana has actinocytic stomata. Morpho-anatomical information provides taxonomic value for identifying and classifying the two Hoya species.http://rjs.ruh.ac.lk/index.php/rjs/article/download/211/183Endemic hoyasmorphologyMindanaoplant diversitytaxonomywax plants |
| spellingShingle | D.S. Salas E.B. Sinamban D.P. Buenavista Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines Ruhuna Journal of Science Endemic hoyas morphology Mindanao plant diversity taxonomy wax plants |
| title | Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines |
| title_full | Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines |
| title_fullStr | Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines |
| title_full_unstemmed | Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines |
| title_short | Comparative morpho-anatomical studies of Hoya incrassata and Hoya soligamiana (Apocynaceae) from Mount Hamiguitan, Philippines |
| title_sort | comparative morpho anatomical studies of hoya incrassata and hoya soligamiana apocynaceae from mount hamiguitan philippines |
| topic | Endemic hoyas morphology Mindanao plant diversity taxonomy wax plants |
| url | http://rjs.ruh.ac.lk/index.php/rjs/article/download/211/183 |
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