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Journal > Buletin Kebun Raya > KARAKTERISTIK ANATOMI DAUN DARI SEPULUH SPESIES Hoya SUKULEN SERTA ANALISIS HUBUNGAN KEKERABATANNYA

 

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Buletin Kebun Raya
Vol 16, No 1 (2013): Buletin Kebun Raya Vol. 16 (1) Januari 2013
KARAKTERISTIK ANATOMI DAUN DARI SEPULUH SPESIES Hoya SUKULEN SERTA ANALISIS HUBUNGAN KEKERABATANNYA
Hafiz, Putra ( Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam-IPB Kampus IPB Darmaga, Bogor)
Dorly, Dorly ( Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam-IPB Kampus IPB Darmaga, Bogor)
Rahayu, Sri ( Pusat Konservasi Tumbuhan-Kebun Raya Bogor-LIPI)
Article Info   ABSTRACT
Published date:
01 Jan 2013
 
Hoya has two types of leaves, succulent and non succulent. Succulent plant adapted well in extreme conditions, especially during dry period. Anatomical characters can be used to identify, classify, and determine plant relationship. The aims of this research were to identify anatomical character of succulent Hoya’s leaf and to determine their relationship. Ten examined species Hoya spp. (H. diversifolia, H. latifolia, H. dolichosparte, H. bilobata, H. lacunosa, H. verticillata, H. purpureofusca, H. kuhlii, H. oblanceolata, and H. micrantha) showed anatomical similarity in their epidermal layer, hipodermal, mesophyl, and the absence of sponge tissue at mesophyl. However, there are diversities among the species. Based on paradermal section of the leaf,  two types of stomata were only found at the abaxial side, individual stomata and both individual and stomatal cluster. Hoya diversifolia has the smallest stomatal size, while Hoya latifolia has the biggest. Hoya lacunosa has the lowest stomatal density, while Hoya bilobata has the highest. Hoya diversifolia, Hoya lacunosa, and Hoya oblanceolata have the lowest stomatal index, while Hoya bilobata has the highest. Observation on transversal section showed that Hoya purpureofusca has the lowest leaf thickness, while Hoya kuhlii has the highest. The hierarchical cluster analysis based on anatomical leaf characters showed different patterns of relationship which diversed as three groups at relationship scale 15.
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