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Analisis Residu Herbisida dalam Pengendalian Gulma Berdaun Lebar Di Savana Bekol Taman Nasional Baluran Saputri, Rinny; Ratnadewi, YM Diah; Tjitrosoedirdjo, Soekisman; Setyawati, Titiek
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 8 No 1 (2023): Ekotonia: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/ekotonia.v8i1.4081

The research was conducted in the savanna Bekol - Baluran National Park, East Java to find the best rate of herbicide to control broadleaved weeds in the savanna and to estimate the soil residue of herbicide used. The experimental design was a randomized block with six treatments and four replications. The treatments were herbicide applications consisted of (1) the rate of triclopyr at 670 g a.i ha-1 (TA), (2) rate of triclopyr at 1340 a.i ha-1 (TB), (3) the rate of fluroxypyr at 200 g a.i ha-1 (FA), (4) rate of fluroxypir at 400 g a.i ha-1 (FB), (5) Weeding Manual (PM) and (6) Control (K). The application of triclopyr at 670 g ai ha-1 was among the best of treatments applied. Sampling of soil at day 0 and day 28 after application indicated the residue of triclopyr 670 g ai ha-1 was 0.16 ppm and DT50 = 14 d.

Akumulasi Biomassa Tumbuhan Poaceae di Bawah Cekaman Karbon Monoksida (CO) Puspitasari, Laksmi; Wahyuni, Resti; Pasaribu, Pinta Omas; Saputri, Rinny
Journal of Natural Sciences Vol 6, No 1 (2025): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i1.813

Air pollution caused by motor vehicle emissions is a significant environmental issue in Indonesia. One of the main pollutants from these emissions is carbon monoxide (CO), which can harm the environment and inhibit plant growth. High carbon monoxide exposure can cause plants to experience stress. This study aims to analyze the biomass accumulation of several plant species from the Poaceae family (Setaria plicata, Rottboellia cochinchinensis, Eleusine indica, and Paspalum conjugatum) under carbon monoxide exposure. The research method used was an experimental study with a Two-Factor Completely Randomized Design (CRD). The factors tested included plant species (four types) and the frequency of carbon monoxide exposure (three levels), with each treatment repeated three times. The results showed that the shoot dry weight was influenced by the plant species and the frequency of carbon monoxide exposure separately, with no interaction between the two factors. Rottboellia cochinchinensis had the highest shoot and root dry weight accumulation compared to the other species, while Paspalum conjugatum had the lowest biomass accumulation. The frequency of carbon monoxide exposure twice a week for two consecutive weeks resulted in the lowest shoot dry weight among the Poaceae plants.

Literature Study of Lactic Acid Bacteria in Bangka Belitung: Sources, Methodology, Utilization, And Identification Lingga, Rahmad; Saputri, Rinny; Fitriyani, Fitriyani; Indra, Muhammad Panca
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 1: Jurnal Pembelajaran Dan Biologi Nukleus March 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i1.5196

Bangka Belitung has various types of fermented foods, in the production of which lactic acid bacteria are involved. Lactic acid bacteria plays important role in enhancing the nutritional value of food ingredients, extending their shelf life, producing distinct aromas, and preventing contamination from pathogenic bacteria. Additionally, lactic acid bacteria can also act as probiotics for application in livestock or fisheries. This article examined several studies on lactic acid bacteria that were linked to the biological resources of Bangka Belitung. The aspects studied included the sources of lactic acid bacterial isolates, research methods or approaches employed, utilization, and identification of lactic acid bacteria. Most of the research related to lactic acid bacteria has been conducted on fermented foods, primarily 'rusip,' which is a fermented food product made from shrimp or fish. This review expected to provide an overview of the trends and research interest in lactic acid bacteria conducted in Bangka Belitung, while also mapping out aspects that need further exploration in subsequent research

Molecular Profiling of Dillenia suffruticosa in Bangka Islands using rbcL Gene Arsyadi, Ahmad; Saputri, Rinny
El-Hayah:Jurnal Biologi Vol 10, No 3 (2025): EL-HAYAH (VOL 10, NO 3 September 2025)
Publisher : Program Study of Biology, Science and Technology Faculty, UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v10i3.35946

Dillenia suffruticosa or Simpur is known for their multiple uses in various medical and food packaging purposes. Considering their applications and valuable potential, implementing conservation strategies is required to ensure their survival and preserve their genetic diversity. In this study, we complemented the traditional methods with DNA barcoding for identifying plant species. The current study was designed to accurately identify D. suffruticosa collected from Bangka Islands in Indonesia, through the molecular analysis using rbcL gene as marker genetic. The DNA barcode was examined using several approaches including plant sample collection, DNA extraction, PCR amplification, and DNA sequencing. The obtained DNA sequences were analyzed using various bioinformatics tools to assess genetic relationships and confirm species identification. Based on our analysis, the specimen was successfully identified by DNA barcoding. An approximately 606 base-pair sequence of the rbcL gene from was amplified from D. suffruticosa, which showed 99% similarity to a species from Hawaii. Furthermore, phylogenetic analysis demonstrated that the rbcL barcode loci used was effective in assigning samples accurately at the genus level, but rather challenging in resolving taxa at the species level. Our findings highlight the potential of DNA barcoding as a powerful tool for identifying members of Dilleniaceae, offering advantages over conventional identification methods. This study also was the first to identify the D. suffruticosa in Bangka Islands with the help of DNA barcoding method. However, future research should include additional genetic markers to establish a more robust and accurate method for species identification.

Identifikasi Molekuler Pelawan Kepuh (Tristaniopsis obovata Benn.) dari Pulau Bangka Berdasarkan Gen Internal Transcribed Spacer Saputri, Rinny; Arsyadi, A.
Journal of Natural Sciences Vol 6, No 3 (2025): Journal of Natural Sciences November (IN Press)
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i3.1005

Penelitian ini melanjutkan identifikasi Pohon Pelawan dan mendeskripsikan DNA Barcoding Pelawan Kepuh (Tristaniopsis obovata Benn.) dari Pulau Bangka Belitung berdasarkan gen Internal Transcribed Spacer (ITS). DNA barcoding dari identifikasi molekuler ini akan dimasukkan ke basis data NCBI Genbank untuk menjadi standar dalam identifikasi Tristaniopsis obovata Benn berdasarkan gen ITS. Penelitian ini untuk mengidentifikasi spesies endemik Tristaniopsis obovata Benn yang belum ada status konservasi dalam IUCN Red List Threated species. Pengumpulan sampel daun Pelawan Kepuh dari Hutan Pelawan Namang, Kabupaten Bangka Tengah. Analisis molekuler dilakukan untuk mendapatkan gen penanda Tristaniopsis obovata Benn. DNA barcoding Tristaniopsis obovata Benn menghasilkan urutan panjang 651 pasangan basa gen ITS. Berdasarkan hasil DNA BLAST, Pelawan Kepuh dari Hutan Pelawan Namang, Kabupaten Bangka Tengah memiliki kemiripan 99,84% dengan Tristaniopsis obovata yang ditemukan di Hutan Adat Tukak, Kabupaten Bangka Selatan dan 99,04% dengan Tristaniopsis obovata yang ditemukan di Pengelolaan Hutan Sigambir Kotawaringin, Kabupaten Bangka. Analisis pohon filogenetik menunjukkan bahwa Tristaniopsis obovata Benn. dalam penelitian ini dikelompokkan dalam satu klaster dengan spesies Tristaniopsis obovata lainnya. Ini menunjukkan bahwa ITS memberikan determinasi yang lebih menjanjikan dibandingkan penelitian sebelumnya dengan gen rbcL dalam mengidentifikasi Tristaniopsis hingga ke tingkat spesies. Analisis sekuens DNA barcoding dengan whole genom diperlukan untuk melengkapi identifikasi Pelawan Kepuh.

Analisis Residu Herbisida dalam Pengendalian Gulma Berdaun Lebar Di Savana Bekol Taman Nasional Baluran Saputri, Rinny; Ratnadewi, YM Diah; Tjitrosoedirdjo, Soekisman; Setyawati, Titiek
EKOTONIA: Jurnal Penelitian Biologi, Botani, Zoologi, dan Mikrobiologi Vol 8 No 1 (2023): Ekotonia: Jurnal Penelitian Biologi, Botani, Zoologi dan Mikrobiologi
Publisher : Department of Biology, Faculty of Agriculture, Fisheries and Biology, University of Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/ekotonia.v8i1.4081

The research was conducted in the savanna Bekol - Baluran National Park, East Java to find the best rate of herbicide to control broadleaved weeds in the savanna and to estimate the soil residue of herbicide used. The experimental design was a randomized block with six treatments and four replications. The treatments were herbicide applications consisted of (1) the rate of triclopyr at 670 g a.i ha-1 (TA), (2) rate of triclopyr at 1340 a.i ha-1 (TB), (3) the rate of fluroxypyr at 200 g a.i ha-1 (FA), (4) rate of fluroxypir at 400 g a.i ha-1 (FB), (5) Weeding Manual (PM) and (6) Control (K). The application of triclopyr at 670 g ai ha-1 was among the best of treatments applied. Sampling of soil at day 0 and day 28 after application indicated the residue of triclopyr 670 g ai ha-1 was 0.16 ppm and DT50 = 14 d.

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