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All Journal Journal of Sylva Indonesiana Jurnal Riset Biologi dan Aplikasinya
zulkarnaen, rizmoon
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology Medicine & Pharmacology

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The Biology of Invasive Native Plant as an Ex-situ Collection: A Case Study of Epipremnum pinnatum (L.) Engl. (Araceae) in Bogor Botanical Garden, Indonesia zulkarnaen, rizmoon; Martiansyah, Irfan; Damayanti, Frisca; Wardani, Fitri Fatma; Yudaputra, Angga; Robiansyah, Iyan; Hutabarat, Prima Wahyu K.; Harto, Harto
Jurnal Riset Biologi dan Aplikasinya Vol. 6 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v6n2.p60-72

Abstract

The Bogor Botanical Garden (BBG) is a pivotal center for plant research and conservation, boasting a diverse collection of over 12,000 individual plants spanning various species. However, among the plant collections at BBG, some of them have the potential to be invasive. Therefore, this study aimed to uncover the plant collections at BBG with invasive potential and analyze the distribution of one of the most dominant collections, Epipremnum pinnatum (L.) Engl. The method employed in this research involved a literature review to identify which plant collections have invasive potential and a vegetation analysis on the distribution of E. pinnatum within BBG. Additionally, ANOVA analysis and regression models were employed to explore the relationship between environmental factors and E. pinnatum abundance. Results revealed that BBG hosted 78 potentially invasive plant species, with E. pinnatum comprising 28 individuals. Spatial analysis indicates a clustered distribution of E. pinnatum, influenced by seed dispersal mechanisms, environmental factors, and biotic interactions. Correlation analysis links soil pH, soil moisture, and canopy cover to E. pinnatum distribution. Canopy cover demonstrates a significant positive correlation with E. pinnatum abundance, suggesting its importance in providing favorable microclimates for growth. Regression analysis further supports canopy cover as a predictor of E. pinnatum presence. However, while a strong statistical association was observed, causal relationships require further investigation. This study underscores the complexity of ecological dynamics in BBG and emphasizes the need for comprehensive research to define underlying mechanisms driving plant distributions and interactions.
Optimal Dose Determination of Gamma Ray Irradiation of Alocasia suhirmaniana Yuzammi & A. Hay: Optimal Dose Determination of Gamma Ray Irradiation of Alocasia suhirmaniana Yuzammi & A. Hay Mulyani, Melza; A Husaini, Iin Pertiwi; Hariri, Muhammad Rifqi; Zulkarnaen, Rizmoon
Jurnal Riset Biologi dan Aplikasinya Vol. 7 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v7n1.p31-37

Abstract

Alocasia suhirmaniana Yuzammi & A. Hay belongs to the Araceae family and has the potential for ornamental use. Nevertheless, this plant exhibits a limited leaf count and pliable leaf stems, necessitating the application of breeding techniques for its improvement. One important strategy empeloyed to improve the quality of ornamental plants is the breeding, which involves the use of gamma ray irradiation techniques. The objective of this study is to determine the developmental patterns and appropriate dosage levels of LD20 and LD50 Gamma ray irradiation in A. suhirmaniana callus. The development of callus, the quantity of shoots, and the establishment of rooted explants exhibit a stochastic pattern, with a decrease observed at a dosage of 5 Gy and an increase observed at 10 Gy. The LD20 and LD50 values for Gamma ray irradiation in A. suhirmaniana callus fall within the dose range of 7.14 Gy and 15 Gy, respectively. This dosage range is recommendedto achieve a greater diversity in genotypes and phenotypes. By successfully finding the optimal dosage of gamma ray irradiation, plant selection can be improved through enhancing genotype and phenotype characteristics.
Biomechanical Properties of Pinang Jawa (Pinanga javana): Structural Performance and Ecological Significance zulkarnaen, rizmoon; Adik Bahanawa; Hendra Helmant; Deanova Frestiana Br. Pelawi; Nabela Fikriyy
Journal of Sylva Indonesiana Vol. 8 No. 2 (2025): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v8i2.19915

Abstract

The mechanical strength of Pinang Jawa (Pinanga javana), an endemic palm species in Java, is essential for understanding its structural resilience and ecological role. This study characterizes its biomechanical properties by evaluating the modulus of rupture (MOR) and the modulus of elasticity (MOE) using standardized three-point bending tests. Samples were collected sustainably from mature palms on Mount Slamet, ensuring minimal ecological disruption. Results indicate that the MOR ranged from 7.78 to 14.47 MPa, with a mean of 11.24 MPa (±2.19 MPa), and MOE values spanned from 440.82 to 792.95 MPa, averaging 572.17 MPa (±89.48 MPa). Statistical analysis, including 95% confidence intervals of [9.77, 12.71] MPa for MOR and [512.06, 632.28] MPa for MOE, confirmed the reliability of these estimates. A one-way ANOVA revealed significant variability in MOE (p < 0.05), attributed to the anisotropic nature and heterogeneous fiber orientation, while MOR showed less pronounced variability (p > 0.05), suggesting consistent rupture resistance. These findings highlight the stem’s moderate mechanical properties compared to other palms and provide insights into its structural adaptations. This study enhances the understanding of Pinang Jawa’s biomechanical behavior, reinforcing its ecological significance as an endemic species and supporting further research on palm biomechanics and conservation strategies
Co-Authors A Husaini, Iin Pertiwi Adik Bahanawa Damayanti, Frisca Deanova Frestiana Br Pelawi Fitri Fatma Wardani Harto, Harto Hendra Helmant Hutabarat, Prima Wahyu K. Iyan Robiansyah MARTIANSYAH, Irfan Muhammad Rifqi Hariri Mulyani, Melza Nabela Fikriyy Yudaputra, Angga