Garuda - Garba Rujukan Digital

Sri Rahayu

Lembaga Ilmu Pengetahuan Indonesia (LIPI)

Author-ID : 2890322

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Medicine & Pharmacology Social Sciences

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ASOSIASI POHON DENGAN EPIFIT Hoya spp. DI TAMAN NASIONAL BUKIT DUABELAS Tree Association with Epiphytes Hoya spp. in Bukit Duabelas National Park Inggar Damayanti; Iskandar Z. Siregar; Sri Rahayu
Jurnal Silvikultur Tropika Vol. 8 No. 3 (2017): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.8.3.191-196

In the tropical rainforests of Jambi, Sumatera, a particular group of epiphytes, species in the genus Hoya, have significant potential to be developed as commercially valuable ornamental plants, because of the uniqueness and beauty of their flowers. Hoya spp. are epiphytic vines whose survival depends largely on the presence of carrier trees, i.e. phorophyte trees. The study reported here was conducted to identify the level of epiphytic association between phorophyte trees and identified Hoya species. The study found four Hoya species, namely: Hoya rintzii, Hoya revoluta, Hoya coronaria, and Hoya cf. caudata. The four species of Hoya were found growing on eleven different species of phorophyte trees. Based on the results of t-contingency tables it was found that there is no association between particular Hoya species and the particular phorophyte tree species. This conclusion was supported by the calculation of Jaccard association indices demonstrating that the association between Hoya spp. and phorophyte tree species is relatively weak. Crown cover and the diameter of the tree are two habitat variables that affect the presence of Hoya revoluta at the sites. The presence of Hoya caudata was influenced by the variable temperature, while the presence of Hoya coronaria was associated with humidity, but the degree of association was relatively weak. The most significant variables affecting the presence of Hoya rintzii were tree height and elevation.Key word: association, ephyphites, Hoya spp, phorophyte.

KARAKTERISASI MORFOLOGI DAUN DAN BUNGA BEBERAPA VARIETAS Hoya coronaria DARI KAWASAN HUTAN KERANGAS AIR ANYIR, BANGKA Putri Deswanti; Yulian Fakhrurrozi; Sri Rahayu
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 2 No 1 (2017): EKOTONIA: Jurnal Penelitian Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Hoya coronaria was found in Heath Forest Air Anyir, Bangka in various flower color. Characterization based on morphological characteristics need to clear up the differences between varieties. This research aims to observe morphological variation of six varieties of H. coronaria from Heath Forest Air Anyir, Bangka based on morphology vegetative and flower morphology. The descriptive method was used to describe the morphological character. Determination of color based on Munsell Color Chart for Plant Tissues. The six samples of different varieties was used which has different flower color as follow respectively: yellow corolla with pink corona (var1); yellow corolla with white corona (var2); yellow corolla with pink honey line and pink corona (var3); pink corolla with pink honey line and pink corona (var4); pink corolla with pink honey line and white corona (var5); and white corolla with white corona (var6). The six varieties have different characteristic of vegetative and flower part both on qualitative and quantitative measurement. The cluster analyses resulted two sister groups. The first group (group A) consisted of var3, var4, var5, and var6, and the second group (group B) consisted of var1 and var2. Groups A was consisted of two smaller groups, namely group C and group D. Group C consisted of var3, var4 and var5, while group D consisted of var6

PROSES PEMBUNGAAN BEBERAPA VARIETAS Hoya coronaria DARI KAWASAN HUTAN KERANGAS AIR ANYIR, BANGKA Risti Annisa; Yulian Fakhrurrozi; Sri Rahayu
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 2 No 1 (2017): EKOTONIA: Jurnal Penelitian Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Hoya coronaria found in heath forest of Air Anyir, Bangka has diverse colors. Flowers color diversity sometimes correlated varieties or the result of color changes during flowering process. The flowers development process observed from 5 H. coronaria varieties with different color from heath forest of Air Anyir, Bangka.The purpose of this research to know the flowering process and flower color change process some varieties of H. coronaria. This research done from September 2015-January 2016. This study used qualitative method to made detail and systematic description about flowering phase. H.coronaria flowering process consists of flower initation, flower estabilisment and flower development. Flower initation needs 13-15 days, flower estabilisment needs 10-12 days and flower development consists of early blooming process, full blooming and senescene. Early blooming process needs 1-3 days, full blooming needs 5-12 days and senescene needs 1-3 days. During the development process changes from rounded to pentagonal shape and there is a change in size. The observation result showed that 5 varieties are different from one another based on the difference between the colors of the flowers. Variety 1 has yellow corolla without honey line and deep pink corona. Variety 2 has light yellow green corolla with strong pink honey line and moderate red corona. Variety 3 has moderate red corolla with moderate red honey line and moderate red corona. Variety 4 has light yellow green corolla with moderate pink honey line and light yellow green corona. Variety 5 has moderate red without honey line and grayish red corona

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