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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 2,562 Documents
 69   70   71   72   73 
Response of Cucumis sativus L.’s Growth and Harvest to Variations in Soaking Time and Plant Growth Promoting Rhizobacteria Concentration Erviyana Windiastuti; Muhammad Hajji Ramadhan; Visi Tinta Manik; Fitri Kurniati; Yaya Sunarya
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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

Abstract

Cucumber (Cucumis sativus L.) has numerous properties, making it a potential dietary, medicinal, and cosmetic element. As accordingly, organic methods must be implemented to enhance cucumber productivity. Plant Growth Promoting Rhizobacteria (PGPR) is used as biologic fertilizer and biological control agent. Seed priming with PGPR was the strategy utilized in this experiment. To optimize this strategy, this study must be undertaken to identify the reaction of seed priming PGPR Bacillus subtilis and Pseudomonas fluorescens to Cucumis sativus L. growth and yield.      The study design employs a split-plot design with two components, two variations of soaking time duration and four variations of concentration of PGPR. The plant’s height, the amount of leaves, and dry weight of the root were all noted as the plant growth parameters observed. The harvest criteria observed included the quantity and weight of fruits per plant. The variance approach (F test) was used to assess the observations. The Least Significant Difference (LSD) test is subsequently applied to evaluate the differences throughout treatments at a significant threshold of 5%.. Growth and yield parameters responded differently in each treatment. However, all of the results obtained following statistical testing revealed that the reaction was not significantly different. This study gives vital information for farmers in optimizing cucumber production and implementing organic farming practices by employing PGPR as a biological fertilizer, indicating that further land selection is required.
Molecular Technique as A Vigorous Instrument for Identification and Classification of Dickeya on The Ornamental Plants Noor Febryani; Yuichi Takikawa
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5044

Abstract

Information on the genetic diversity of pathogenic bacteria causing plant disease is rare to find. This study aims to identify and classify disease-causing pathogens in several ornamental plants molecularly. Sixteen bacterial strains were isolated from carnation, chrysanthemum, and kalanchoe. All strains were grouped in D. dianthicola although the carnation strains and kalanchoe strains gave different results from the identified carnation strains. The differences were found in rep-PCR and 16S rDNA. Band patterns produced by rep-ERIC PCR revealed that the carnation strains, chrysanthemum strains, and kalanchoe strains formed slightly different from the identified carnation strains. Meanwhile, sequence analysis of 16S rDNA revealed that the carnation strains and kalanchoe strains were grouped separately from the identified carnation strains. Even though they were positioned independently from the identified carnation strains and other D. dianthicola strains, but they have closely related each other thus they are identified as a specific group of D. dianthicola. However, based on multilocus sequence analysis (MLSA) of dnaX, recA, gyrB and rpoD, all strains were grouped into D. dianthicola.  Furthermore, the result of pathogenicity test showed that all strains were pathogenic to carnation, potato, and chrysanthemum, but they were not pathogenic to kalanchoe.
Identification of Ferns (Pteridophyta) in the Indrokilo Botanical Garden, Boyolali Regency, as a Resource for High School Biology Learning on Biodiversity Hidayatun Nurul Khasanah; Agus Purwanto; Anwari Adi Nugroho
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5052

Abstract

Indonesia is a country with high biodiversity, both flora and fauna. Biodiversity is an important wealth for life and serves as an indicator of the ecological system and a means of detecting changes in species. Identification of ferns (Pteridophyta) was carried out because the Indrokilo Boyolali Botanical Gardens are very supportive for research and have not been clearly identified and used as a source of learning biology. This study aims to identify the types of ferns (Pteridophyta) in Indrokilo Botanical Garden, Kemiri Village, Mojosongo District, Boyolali Regency which is used as a learning resource on Biodiversity material in tenth grade. The method used was exploration research. Data collection is done by exploring, the results are identified using google lens, then used as a learning resource by adjusting the high school syllabus and data analysis using description analysis. The analyzed research report can be used as a learning resource. Research in Indrokilo Boyolali Botanical Garden obtained 31 species of ferns (Pteridophyta) consisting of 14 families namely, Pteridaceae, Polypodiaceae, Dryopteridaceae, Thelypteridaceae, Dennstaedtiaceae, Woodsiaceae, Aspleniaceae, Marattiaceae, Selaginellaceae, Cyatheaceae, Dicksoniaceae, Lygodiaceae, Ophioglossaceae, and Equisetaceae. Through the analysis of the research report, it can be used as a learning resource for high school biology class ten, the material of Biodiversity on KD 3.2 Analyze the various levels of biodiversity in Indonesia. So that the report of the results of this study can be used as additional examples of the level of species-level diversity at the species-level diversity in biodiversity.
Organoleptic Value and Cholesterol Content of Shredded Meat of Rejected Layers Based on Immersion Level of Lime Juice (Citrus aurantifolia S.) Bulkaini Bulkaini; Djoko Kisworo; M. Alfatih; Akhyar Sutaryono; Maskur Maskur; I K Sumadi
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.5071

Abstract

The production of shredded meat is an innovation to improve the structure of rejected layers of meat into processed products that are tender and low in cholesterol. This study aims to determine the effect of the immersion level of lime juice (Citrus aurantifolia S.). On the organoleptic value and cholesterol of shredded hens of rejected layers. The study was carried out using a randomized block design in the same direction with four treatments and tree replications, namely P0 = meat without soaking in Citrus aurantifolia S liquid; P1= meat soaked in 200 ml of Citrus aurantifolia S liquid, P2= meat soaked in 250 ml of Citrus aurantifolia S liquid and P3= meat soaked in 300 ml of Citrus aurantifolia S liquid. The research data were analyzed using the Analysis of Variance and continued with Duncan's Multiple Range Test using the SPSS 25 program. The results showed that soaking meat in Citrus aurantifolia S liquid in the production of shredded culled laying hens had no significant effect (p>0.05) on organoleptic quality (aroma, tenderness, taste, and acceptance), significantly (p<0.05) can improve the shredded structure according to the Indonesian National Standard (SNI: 1995). Conclusion: Soaking culled laying hens in Citrus aurantifolia S. liquid at a level of 200-300 ml of meat weight can produce shredded meat with a pleasant aroma, tender, tasty, soft, and acceptable to panelists with normal cholesterol levels, namely 10.00 - 46.66 mg/dl.
Effect of Biotechnological Fermentation Waste Kombucha Flower Telang (Clitoria ternatea L) as Liquid Fertilizer on The Growth of Sawey (Brassica chinensis var. parachinensis) Hari Hariadi; Firman Rezaldi; Fajar Hidayanto; Ade Sumiardi; Mu'jijah Mu'jijah; Muhammad Faizal Fathurrohim; Yuliana Kolo; Syariful Mubarok
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5081

Abstract

Liquid organic fertilizer comes from nature and has the potential to improve biological, physical and soil properties because it contains nutrients that have the potential to increase plant growth. This research was conducted to determine liquid fertilizer made from telang kombucha fermentation waste on the growth of mustard plants. The method used was a completely randomized design with a single factor, namely the difference in the concentration of liquid organic fertilizer given 6 treatments with 5 replications for each treatment. The research data were analyzed statistically through ANOVA at a significance level of 95%. Parameters in this study were plant height, number of leaves, fresh weight and dry weight. The results of this study prove that the spraying treatment of liquid organic fertilizer containing kombucha fermentation waste of butterfly pea flowers has an effect on the growth parameters of mustard plants. The conclusion is that liquid organic fertilizer from the waste of fermented kombucha flower butterfly pea at a concentration of 5 mL/L can increase plant height, number of leaves, wet and dry weight of mustard plants.
The Effect of Phosphate-Solubilizing Bacteria and IAA Producers from Cactus Rhizosphere on the Germination of Vigna sinensis L. Muhammad Fikri Alfiansyah; Lalu Zulkifli; Dewa Ayu Citra Rasmi
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5089

Abstract

This study aims to examine the effect of phosphate-solubilizing bacteria and IAA producers on the germination of Vigna sinensis L. The bacteria were isolated from the cactus rhizosphere in Senteluk Village, Batulayar Subdistrict, West Lombok. The soluble phosphate was measured qualitatively and quantitatively. Qualitative measurement was based on the solubility of P in the growth medium (solid Pikovskaya) with a clear zone indicator around the bacterial colonies. The solubility of P (liquid Pikovskaya) and IAA production were measured using a spectrophotometer at wavelengths of 430 nm and 530 nm, respectively. In vitro testing of the effects of phosphate-solubilizing bacteria and IAA-producing bacteria on the germination of long beans (Vigna sinensis L.), specifically the Parade tavi variety, was conducted by soaking the long bean seeds in the bacterial suspension and then planting them on Murphy agar medium. The plant height, root length, fresh weight, and dry weight were measured and analyzed using One-Way ANOVA. The bacterial characterization included colony morphology, cell shape, and biochemical tests. The research results obtained 8 isolates that could solubilize phosphate in the low category while producing IAA and 2 other isolates that only produced IAA. Quantitative phosphate solubilization showed the highest soluble phosphate on days 4 and 6 of incubation. The highest IAA production (14.25 ppm) was achieved by the rhizosphere bacterial isolate with the code RK7. The results showed that there was an indication of the influence of phosphate solubilizing and IAA-producing bacteria isolated from the rhizosphere of cactus on Vigna sinensis L. germination, although not significantly different. This shows that local bacterial isolates are quite potential as a source of biofertilizer development in the future.
Analysis of The Structure and Composition of Mangrove Vegetation Types in Induha Latambaga Village, Kolaka District Sutriani Kaliu; Saparuddin Saparuddin; M. Alkadri; Erfina Erfina; Nasarudin Nasarudin; Djunarlin Tojang
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5091

Abstract

Mangroves are plants typical of tidal boundaries, beaches and around river mouths. Mangrove vegetation in Induha Village is spread along the coast. Information regarding the structure and composition of mangrove vegetation is still lacking, so research is needed. This research was conducted to determine the structure and composition of mangrove vegetation in Induha Latambaga Village, Kolaka Regency. This study used the point centered sampling method and the observed parameters were seedlings, saplings and trees as well as the composition of the mangrove vegetation. The results showed that Rhizophora apiculata had the highest relative dominance in seedlings (42.13%), saplings (57.50%) and trees (38.31%). Relative frequency in seedlings (35%), saplings (45%) and trees (34.5%). Relative LBA for seedlings (50%), saplings (84.83%) and trees (52.34%). KR in saplings (57.2%) and trees (35.5%), as well as IVI in seedlings (136.1%), saplings (248%) and trees (148.1%). Vegetation composition consisted of 3 families (Rhizophoraceae, Acanthaceae and Sonneratiaceae) and 4 species (R. apiculata, R. mucronata, R. stylosa and B. cylindrical). Environmental factors in Induha Village support the survival of mangroves, especially Rhizophora apiculata.
Species Diversity of Gastropoda in Seagrass Ecosystems at Mandalika Beach Arif Safrillah; Karnan Karnan; Lalu Japa
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.5125

Abstract

Madak is looking for or hunting marine biota that can be consumed or has high economic value. Madak's activities can still threaten the existence of species on Mandalika Beach, one of which is Gastropods. This research focuses on the diversity of gastropod species that live in seagrass beds at Mandalika Beach. This study aims to identify the abundance and analyze the diversity index, uniformity index and dominance index of gastropod species in seagrass ecosystems on the Mandalika coast. This type of research is included in the type of descriptive-explorative research. This study describes the diversity of gastropod species in seagrass ecosystems on Mandalika Beach. The testing procedure utilized purposive examining. The research was conducted at 3 stations with 3 transects at each station. The results showed 27 species and 15 families of Gastropods. The species abundance value was 0.796 ind/m2, the species diversity index value was 1.849, the uniformity index value was 0.686, and the dominance index value was 0.280.
Analysis of Histamine Levels in Tuna Loins Product at CV Laut Biru in Sikka Regency Yohanes D B R Minggo; Angelinus Vincentius
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.4899

Abstract

CV Biru Laut is a Tuna fish company of Sikka regency. The resulting product has gone through several stages of testing, one of which is testing the content of Tuna fish. This study aimed at to determine the histimine content of Tuna Loin products Thunnus albacro CV Laut Biru. The method used was the enzyme linked immunosorbent assay (ELISA) method with qualitative data analysis through a one-way analysis of variance test. The results showed that the value of histamine levels in the CV Laut Biru Tuna Loin Product met the target specifications for histamine levels with the highest test value of 2.66 ppm and the smallest value of 0.54 ppm, while based on the one-way analysis of variance test, there was no difference. The average histamine levels significantly in the test in April 2021.
Acute Toxicity Test of The Jamu TurmericTamarind on Artemia Salina Leach Larvae Muhammad Abdurrahman Fardiaz; Kholisatun Nafila Az-Zahro; Intan Dzulqaidah; Diana Ayu Savitri; Iman Surya Pratama; Lalu Husnul Hidayat
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): 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.v23i3.4900

Abstract

Jamu is an ingredient from plant, animal material, mineral material, or a mixture of these ingredients for treatment based on experience. One of the jamu that are often consumed by Indonesian people, especially women, is the turmeric tamarind jamu. The turmeric and tamarind jamu is believed by most women to relieve pain during menstruation period. However, its current use has not been accompanied by the optimum dosage and side effects. Therefore, the toxicity test was carried out as an initial screening to predict the toxic levels that might be caused by the turmeric tamarind jamu. In this study, the bioactive substances in turmeric tamarind jamu will be identified, as well as the level of toxicity based on the LC50 value. Using variations in extract concentration, this study used a fully randomized approach. The powdered sample of turmeric tamarind jamu brand X was dissolved in water and then tested for phytochemical screening. Phytochemical screening including flavonoids, alkaloids, tannins, steroids/terpenoids, and saponins screening was carried out qualitatively, the Brine Shrimp Lethality Test (BSLT) method was used to carry out the toxicity.The results of the phytochemical screening showed that the turmeric tamarind jamu contains alkaloids, flavonoids, tepenoid, steroid and tannins. The results of the toxicity test of the turmeric tamarind jamu showed the LC50 value in 3366.656 ppm and classified as non-toxic because it had LC50 value more than 1000 ppm.

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