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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 51 Documents
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Search results for , issue "Vol. 22 No. 3 (2022): July - September" : 51 Documents clear
Effect of Biofertilizer and Inorganic Fertilizer on Growth and Productivity of Shallot (Allium cepa L.) Tience E. Pakpahan; Taufiq Hidayatullah; Eva Mardiana
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3491

Abstract

Shallots are categorized as a national priority commodity as a kitchen spice needed every day. Shallots are a commodity that the production continues to increase from year to year. National shallot production increased by 4.9% from 2018 production of 1,502,436 tons and for the North Sumatra region it increased by 7.5% from 2018 production of 113,864 tons (BPS, 2019). This study aims to determine the effect of biofertilizer and inorganic fertilizer on the production of shallots (Allium cepa L.) using mini bulbs and mother bulbs on inceptisol soils in the Practice Field of the Medan Agricultural Development Polytechnic (Polbangtan Medan). This research was conducted from June to October 2021 at Polbangtan Medan. The study used a factorial randomized block design with three replicates and 18 treatment combinations of treatment dosage of organic fertilizer and biofertilizer treatment. Observation parameters in this study were soil analysis, plant height, number of leaves, number of tillers, wet weight, and dry weight. The results of soil analysis on parameters N-total (0.11%) in the low category, C-Organic (0.97%) in the low category, CEC (18.85) in the medium category, pH (7.01) in the neutral category, and Bray II (69.71) high category. This study revealed that the application of biological fertilizer and inorganic fertilizer had no significant effect on all observation parameters, both growth and tuber yield. For the Sanren variety, it is recommended that 5 ml/L of biofertilizer and 75% dose of inorganic fertilizer because it showed the best conditions for the parameters of the number of leaves, wet weight of the sample, and plot. For the Lokananta variety, it is recommended that 10 ml/L of biological fertilizer and 25% dose of inorganic fertilizer because it showed the best conditions for the parameters of plant height, number of leaves, and wet weight of the sample, and plot.
The Effectiveness Probiotic Drink of Salak Bali (Salacca zalacca) in Inhibiting Growth of Escherichia coli Nadya Treesna Wulansari; A.A. Istri Mas Padmiswari; Ida Ayu Manik Damayanti
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3515

Abstract

Salak bali (Salacca zalacca) is one of the local fruit varieties cultivated in Bali. This fruit contains antioxidants, so that it is potential to be used as a probiotic drink. Probiotic drinks containing live microbes can inhibit the growth of pathogenic microbes and balance the microbes in the intestines so that they can affect the health of those who consume them. This study aimed to determine the effectiveness of the probiotic drink of salak bali fruit juice (Salacca zalacca) in inhibiting the growth of Escherichia coli. The study employed experimental with a completely randomized design. Salak juice was fermented for 18 days and harvested every 3 days, then an antibacterial test was carried out. The data were analyzed by using analysis of variance (ANOVA) followed by Duncan's Multiple Range Test (DMRT) at a 5% significance level. The finding showed that probiotic drink of salak bali fruit juice effective to inhibiting the growth of Escherichia coli. Optimal antibacterial growth was seen on the 15th day of fermentation with an inhibition zone of 8.13 ± 0.40 mm. The presence of inhibition caused by the phytochemical content found in salak fruit, SCOBY contained in drinks, and the length of the fermentation process.
Nitrogen Absorption Rate in Kappaphycus alvarezii with a Longline System in the IMTA (Integrated MultiTrophic Aquaculture) Area at Ekas Bay Muhaemi Muktiniati; Muhammad Junaidi; Bagus Dwi Hari Setyono
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3562

Abstract

The rapid growth of the aquaculture sector can indirectly lead to the accumulation of unresolved aquaculture waste in the sea. The IMTA cultivation system is one of the innovations developed in aquaculture activities to overcome aquatic environmental problems, such as the accumulation of waste from feed used in aquaculture activities. The concept combines the cultivation of several species with different trophic levels, such as fish that are fed and combined with seaweed that can absorb inorganic materials in the water. The purpose of this study was to determine the level of nitrogen absorption in Kappaphycus alvarezii using a longline system in the IMTA area in the waters of Ekas Bay. This study used a Randomized Block Design (RAK) with 4 treatments and each treatment was divided into 4 groups (North, South, East, and West). The treatment given was planting seaweed at different depths, namely 50 cm, 100 cm, 150 cm, and 200 cm. The results showed that Kappaphycus alvarezii reared with an integrated cultivation system at different planting depths gave significantly different results in absolute weight growth with values ​​ranging from 120,31 grams – 195,58 grams and specific growth rates ranging from 2.67% - 4, 35%, but did not have a significant effect on the rate of nitrogen uptake in all treatments, but the highest absorption value was at a depth of 2 meters. So the researchers suggest the cultivation of Kappaphycus alvarezii at a depth of 2 meters in the waters of Ekas Bay, East Lombok with a longline system in the IMTA area.
Phytochemical test of 3 wild rambutan (Nephellium Lappaceum L. - Sapindaceae) fruits from Riau Province Sofiyanti, Nery; Fitmawati; Isda, Mayta Novaliza; Agesti, Asih Rahayu Ajeng; Sari, Maya; Pranata, Syafroni
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3574

Abstract

Rambutan (Nepelium lappaceum) is one of tropical fruit plant that poses high morphological character, both cultivated or wild plants. The exploration of Nephellium in Riau Province had indicated 3 variations of wild Nephellium (Mone, Tunyiang dan Rambutan Hutan). The aim of this study was to examined the phytochemical contents of fruit from three wild Nephellium from Riau Province. Samples used in this study were three fruit parts (pericarp, aril and seed). Phytocemical tests were conducted qualitatively for alkaloid, terpenoid, steroid, flavonoid, saponin and tannin. The result showed that each fruit part had different phytochemical contents. Alkaloid was only found in aril of all wild Nephellium (Mone, Tunyiang dan Rambutan Hutan). Terpenoid and saponin were found in all fruit parts, while saponin was absent in all fruit parts from three wild Nephellium.  ditemukan pada semua bagian buah dari ketiga buah rambutan liar. The result of this study provides additional information of phytochemical content of wild N. lappaceum.
Aklimatization Black Orchid Plantlets (Coelogyne pandurata Lindl.) with Biostimulant Moringa Leaf Extract (Moringa oleifera Lamk.) Rina Karmila; Zulfa Zakiah; Mukarlina
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3593

Abstract

The growth of black orchid plantlets (Coelogyne pandurata Lindl.) are slow at the acclimatization stage. An alternative was used moringa leaf extract (Moringa oleifera Lamk.) as a biostimulant. The aim of this research to find out the effect of giving moringa leaf extract on the growth of black orchid plantlets at the acclimatization stage and to obtain the best concentration and timing of extract to increase the growth of black orchid plantlets. The research used a factorial completely randomized design (FCRD) method with two factors. Factor I is the concentration of the extract which consists of 5 levels, namely 0, 25, 50, 75 and 100 mg/L. Factor II is the application time which consists of 2 levels, namely once a week and every 2 weeks, each treatment is repeated 5 times. The results showed that moringa leaf extract had a significant effect on the mean leaf width and number of plantlet roots of black orchids. Extract concentration of 50 mg/L was the best concentration on the growth of black orchid plantlets with an average leaf width of 0.76 cm and an average root number of 8.2. Recommended for the acclimatization of black orchids to use extract concentration 50 mg/L.
Diversity of Floricultural Crops traded in Langsa City Aceh Indonesia Ekariana S Pandia; Farah Diba Shahra; Zill Sekar Gading Fawwaz Sentosa; Mughnita Ayu
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3602

Abstract

Indonesia is a tropical country that has abundant biodiversity, including floriculture plants. The purpose of this study was to determine the diversity of floricultural plants traded in Langsa City. Determination of the research location by purposive sampling. This research was conducted using survey and interview methods, namely tracing floriculture plant traders in each sub-district of Langsa City. The data obtained were analyzed qualitatively, namely grouping by type (species) and family. The diversity of floricultural plants traded in Langsa City is 234 species belonging to 61 families. In Langsa Baro sub-district there are 109 species and 39 families; Langsa Barat as many as 52 species and 19 families; Langsa Kota as many as 96 species and 37 families; Langsa Lama as many as 26 species and 12 families; Langsa Timur as many as 86 species and 30 families. The Araceae family is the largest family found in all floricultural plants traded in Langsa City, which is as many as 51 species.
Estrogenic Effects of Tapak Dara (Catharantus roseus) Leaf Methanol Extract on The Estrus Cycle of Adult Female Mice (Mus musculus) Balb/C Strain Yunita Fatmala; Mahrus Mahrus; Lalu Zulkifli
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3604

Abstract

Tapak dara plant is a plant that contains several active compounds, such as phenolic acids, flavonoids and alkaloids. The tapak dara plant can act as a sedative, urinary laxative, stop bleeding, and neutralize toxins. In addition, tapak dara leaf extract contains ingredients that can act as antifertilization. This study aimed to determine the effect of methanol extract of tapak dara leaf on the estrus cycle of adult female mice (Mus musculus) Balb/C strain. This research is an experimental research by testing cause and effect. The hypothesis test used in this study was one-way ANOVA and BNT test. The significance value of giving tapak dara leaf methanol extract to female mice showed a significant value so that it can be said that the administration of tapak dara leaf methanol extract caused the estrus cycle of female mice to be longer. The significance value of estrogenic activity in mice shows a significant value of 0.047, so it can be said that estrogen activity also affects the length of the estrus cycle. The results of hypothesis testing using the one-way ANOVA test were significant, so it can be concluded that the methanol extract of tapak dara leaves can cause the estrus cycle of female mice to be longer.
Application of Legume Inoculum (Legin) to The Root Nodules and Peanut (Arachis hypogaea L.) Production on Peat Soil West Kalimantan Anna Rizkia; Riza Linda; Zulfa Zakiah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3606

Abstract

Peanuts (Arachis hypogaea L.) are food crops that have high economic value because of their nutritional content. One of the factors that affect the low production of peanuts in West Kalimantan is the condition of the soil dominated by peat soil causing soil fertility to be low. Application of Rhizobium or legin is expected to increase the production of peanuts (Arachis hypogaea L.). The purpose of the research was to find out the effect of legin application against the amount of root nodules and the production of peanut plants. The research was conducted from November 2020 to February 2021. This research used a Completely Randomized Design (CRD) consisting of 5 treatments namely control, application of legin 4 g/kg seed, 8 g/kg seed, 12 g/kg seed and 16 g/kg seed. The results showed application of legin has a real influence on the total weight of root nodules, the total number of root nodules, the number of effective root nodules, the number of filling pods, the number of seeds and the weight of seeds, but had no noticeable effect on the time of flowering. Legin application of 12 grams / kg of seeds is the best concentration to increase the production of peanuts grown in west Kalimantan peat soil, because it gives the best results to the number of pods content 11.33 pods, the number of seeds 24.16 seeds and the seed weight 19.73 grams.
Isolation and characterization of indigenous copper resistant bacteria from Yogyakarta tannery factory waste Wahyu Irawati; Polin Parulian Ambarita; Desi L. Sihombing; Vannesa El Shaday Ruth Advenita; Eunike Bunga Marvella
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3621

Abstract

The leather tanning industry is one of the industries that causes environmental damage because one of the processes uses copper to produce products such as bags, jackets, and shoes. Copper bioremediation using indigenous bacteria is an effective solution to the problem of pollution because it utilizes bacteria isolated from the polluted environment. This study aims to isolate and characterize copper-resistant bacteria from the waste of the Yogyakarta Tannery Industry. The medium used was Luria Bertani Agar with the addition of 3 mM CuSO4. The characterization carried out included the characterization of colony and cell morphology such as color, edges, optical appearance, cell shape, and Gram staining. The isolation results obtained eight isolates of copper-resistant bacteria, namely Y1, Y2, Y3, Y4, Y5, Y6, Y7, and Y8. Isolates Y1, Y2, Y3, Y4, Y5, and Y8 were Gram positive bacteria while isolates Y5 and Y6 were Gram negative bacteria. Colonies of isolates Y1, Y3, Y4, Y8 greenish color indicates the accumulation of copper in the cells as a mechanism of resistance. The discovery of isolates of copper-resistant bacteria from samples of the tannery industry waste is a useful study as an initial study to obtain isolates of Indonesian indigenous copper-resistant bacteria to be further developed as a copper bioremediation agent in the treatment of copper waste in the leather tanning industry.
The Estimation of Ketapang (Terminalia catappa Linn.) Tree’s Transpiration Sri Wahyuni; Mar’atul Afidah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3722

Abstract

Ketapang (Terminalia catappa Linn.) is a coastal tree with a fairly wide distribution area. The utilization of ketapang has not been carried out optimally. Ketapang is only used as a shade tree. For this reason, it is necessary to do a lot of research in exploring the various benefits of ketapang. One of the basic studies to determine the potential of ketapang is to estimate the transpiration of ketapang tree. The results of this study can be used as a basis for the use of ketapang as a tree that has the potential for sustainable environmental management. The purpose of this study was to determine the estimated transpiration of ketapang tree. This research is a qualitative survey research. This research uses purposive sampling technique. The sample in this study is ketapang tree that grows in the FKIP environment of Lancang Kuning University. The research data were analyzed by using the formula for the estimation of the amount of water from transpiration in one tree. The results showed that the estimated transpiration in ketapang tree averaged 17,330 ml within 24 hours. The ketapang tree has an important role in ecological functions, especially in maintaining the water cycle. It is necessary to conduct similar research on other tree species in order to obtain tree species that have the potential to be developed as trees with high ecological functions.

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