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"Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023"
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<![CDATA[Application of Microgranule from IAA Producing-Endophytic Bacterial as Biofetilizer on Rubber Plants (Hevea brasiliences Muell. Arg.) ]]>
<![CDATA[Agung Ardiansyah]]>;
<![CDATA[Kabul Warsito]]>;
<![CDATA[Tri Yanita Ginting]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.3909
<![CDATA[Rubber plant (Hevea brasiliensis Muell.Arg) is the main commodity of plantations, some of whose products are exported and some to meet domestic needs as raw materials for industrial purposes. Purpose on research diversity and crateristics of endophytic bacteria producing hormone IAA from rubber plants. Then the effectiveness treatment of microgranules addition and immersion of endophite bacterial suspension and rubber seed soaking suspension to spur the growth of rubber plants. This research was conducted using the factorial CRD (Completely Randomized Design) method consisting of 16 treatments with 2 replications. The first factor was immersion of endophite bacterial suspension consisting of R0 = 0 hours; R1 = 12 hours; R2 = 24 hours and R3 = 36 hours and the second factor was the addition of microgranules consisting of J0 = 0 gr; J1 = 10 gr; J2 = 15 gr; J3 = 20 gr. The results of this study showed that the results on the isolation of endophite bacteria from the tea plant from the roots and stems of the tea plant yielded 3 isolates from plant roots and 2 isolates from plant stems. For IAA levels, the five isolates were positive. The use of endophytic bacteria as an alternative biofertilizer has a significant effect on the parameters observed]]>
<![CDATA[Invasion of Endophytic Bacteria by Using Microencapsulation Technology as Stimulant in Cocoa Plants (Theobroma cacao L) ]]>
<![CDATA[Gusti Yanda Prayoga]]>;
<![CDATA[Kabul Warsito]]>;
<![CDATA[Hanifah Mutia Z.N. Amrul]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.3908
<![CDATA[Fertilization is an important process in the growth of cocoa (Theobroma cacao L). Fertilizing cocoa usually used inorganic fertilizers. Using of inorganic fertilizers continuously could degrading soil fertility. One of the efforts to replace inorganic fertilizers was using endophytic bacteria as biofertilizers. Some endophytic bacteria are abundant in healthy plant tissues. The aim of this research was to obtain endophytic auxin-producing bacteria in cocoa plants and determine the effect of seed immersion and microcapsules addition of endophytic bacteria on cocoa plant growth. The research design used was Complete Randomized Design (CRD), 16 treatments and 3 replications. The first factor was immersion of cocoa seed using endophytic bacteria suspension consisting of S0= 0 hours; S1= 5 hours; S2= 6 hours and S3= 7 hours and the second factor was microcapsules addition consisting of B0= 0 gr; B1= 5 gr; B2= 10 gr; B3= 15 gr. Isolation from the roots and stems of cocoa obtained 5 isolates endophyte bacteria. Auxin assays showed that five isolates were able to produce auxin. Observations on plant height showed the best treatment was treatment B1 (32.49 cm). Observation of total leaves showed S3 treatment was the highest data (11.83 strands). Observation rod diameter parameter, highest data was S3 treatment (4.01 mm). For leaf area parameter, highest value was B1 treatment (66.64 cm2). For wet weight parameter, highest data was S3 treatment (18.41 g). Root length parameter, highest data was B3 treatment (15.78 cm). Test results showed that the application of suspension and microcapsules of endophytic bacteria significantly increased growth of cocoa.]]>
<![CDATA[Development of Character Education-Based Modules on Environmental Pollution Material to Improve Environmental Care Attitudes ]]>
<![CDATA[Izra Aulia Almi Harahap]]>;
<![CDATA[Indayana Febriani Tanjung]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4275
<![CDATA[Character is defined as an individual driving engine to carry out an action, respond and respond to something. So that the most important thing instilled by a human being from an early age is character values through character education at school age. This study aims to develop a character education-based environmental pollution module. The research method used is 4D (Define, Design, Development, Dissamination). This research was conducted on class X students of MAN Asahan. The results showed that the assessment of the validation test of the material obtained was 88% (Valid), the assessment of the validation test of learning media experts was 89% (Valid), the assessment of character education experts was 80% (Valid), the response assessment by biology teachers was 95% (Very Practical), the average student response rating is 90% (Very Practical). Based on that it was concluded that the character education-based environmental pollution module that was developed was valid, practical and effective]]>
<![CDATA[Productivity of Several Soybean Varieties (Glycine Max L.) Based on Pruning of Corn (Zea Mays L.) Leaves ]]>
<![CDATA[Zul Fahmi]]>;
<![CDATA[Auzar Syarif]]>;
<![CDATA[Indra Dwipa]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4282
<![CDATA[This research on intercropping productivity of several soybean varieties based on pruning corn plant leaves was carried out on road Alai Kapalo Koto, Limau Manis, Pauh District, Padang at an altitude of 101 meters above sea level from July to November 2022. The purpose of this research is to investigate the relationship between various soybean types and pruning. The best corn leaf for plant development and production, as well as intercropping productivity. This study used a factorial completely randomized design (CRD) with three replications. The first component was soybean cultivars, which had four treatment levels (Anjasmoro, Grobogan, Devon 1, and Dega 1), and the second factor was the quantity of corn leaf pruning, which had four treatment levels (Pruning 0 1/2, 1/3, and 1/4 Corn Plant Leaves). The number of clipped leaves is determined from the base of the stem. The findings revealed that there was no interaction between the quantity of leaf pruning applied to maize plants and select soybean varieties and plant development and yield in an intercropping system. trimming half of the leaves of a maize plant has a greater influence on NKL and ATER values than other trimming levels. When compared to other soybean varieties, the Anjasmoro soybean variety produced higher ATER soybean yields. According to the findings of this study, 1/2 leaf pruning of corn plants and the Anjasmoro type of soybean plants should be used in an intercropping system]]>
<![CDATA[Ethnobotany of Traditional Food Ingredients in Tuban Regency, East Java ]]>
<![CDATA[Hesti Kurniahu]]>;
<![CDATA[Riska Andriani]]>;
<![CDATA[Annisa Rahmawati]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4301
<![CDATA[Traditional food is one of the cultural products that was created to meet primary human needs by involving local wisdom. Various types of traditional food are processed from plants taken from the surrounding environment and other places. Local communities have specific interactions and perceptions of plants as ingredients for their traditional foods. The goal was to determine the diversity, the categories of utilization, the organs used, the preparation methods, and the Cultural Significance Index (ICS) of plants in traditional Tuban food ingredients. This research was conducted by surveying 117 respondents from 20 sub-districts in Tuban Regency, followed by in-depth interviews with 20 traditional food makers in Tuban. The data obtained is in the form of qualitative data in the form of local knowledge of the Tuban people regarding plants in their traditional food ingredients, while quantitative data is in the form of the Cultural Significance Index (ICS). The results showed that there were 15 families consisting of 10 species of plants in traditional Tuban food, all of which were cultivated plants, the most used category of plants as spices and the organs most used were seeds and the highest ICS value was Oryza sativa L. ]]>
<![CDATA[Antimicrobial Activity of Endophyte Bacteria Isolated from Seaweed (Padina sp.) on the Growth of Bacteria Escherichia coli and Staphylococcus aureus ]]>
<![CDATA[Fanesa Akay]]>;
<![CDATA[Jantje Ngangi]]>;
<![CDATA[Helen J Lawalata]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.3632
<![CDATA[Padina sp. seaweed is one of the Chlorophyta which has potential as an antimicrobial. This study aimed to determine the antimicrobial activity of Padina sp. seaweed endophytic bacteria against Escherichia coli and Staphylococcus aureus. The method used in this research is descriptive qualitative. The results of the isolation of endophytic microbes of Padina sp. seaweed obtained were seven isolates DP1, DP2, DP3, DP4, AP1, AP2, and AP3. The results of the antimicrobial activity test showed that the seven isolates of endophytic bacteria had potential as antimicrobials. Incubation time for 24 hours showed that the diameter of the inhibition zone formed was 9.75 – 11.55 mm against S. aureus and 7.15 – 10.0 mm against bacteria. E. coli. The AP3 and DP1 isolates had a wider zone, presumably because their antibacterial substances were higher than the other isolates.]]>
<![CDATA[Effect of Rhodopseudomonas palustris as a Bioremediation on Reducing Ammonia and Nitrite Levels of Catfish Nursery Pond Water in District Kebakkramat Regency Karanganyar ]]>
<![CDATA[Febriyanny Eka Setyowati]]>;
<![CDATA[Henny Parida Hutapea]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4331
<![CDATA[Catfish nursery pond water generally contains ammonia and nitrites. Ammonia and nitrite in this fish farming system start with uneaten catfish feed residue, feces, and metabolic products that enter the waters. Utilization of catfish feed which contains high protein can absorbed by fish as much as 20-30% of nutrients. The rest will be excreted in the form of feces. Feces and food scraps that settle in this water contain ammonia and nitrites, which affect the quality of the water. Efforts to maintain water quality are by reducing and disposing of pond water in the river. This is categorized as water pollution. Efforts to control this water pollution are the technique of bioremediation. The aim of bioremediation techniques is to restore the ecological balance in waters by utilizing microorganisms so that a process of degradation of harmful and complex compounds occurs into harmless compounds. The microorganisms used in this study were bacteria Rhodopseudomonas palustris which can to oxidize and decompose organic matter effectively reducing water quality. This research was conducted to examine the effect of bacterial efficiency Rhodopseudomonas palustris as a bioremediator for catfish pond water waste based on reducing levels of ammonia and nitrite. Testing the ammonia and nitrite levels using a spectrophotometric method with different wavelengths. Observations in this test were carried out for three days under anaerobic conditions and light at a temperature of 33°C. Observations showed that bacteria Rhodopseudomonas palustris had an effect on reducing nitrite levels 12.65% greater than the control. While the addition of bacteria to the observation of ammonia levels did not have a decreasing effect as indicated by the value F <F crit.]]>
<![CDATA[Development of Android Application-Based Learning Media Using Smart Apps Creator (SAC) on Cell Division Materials ]]>
<![CDATA[Rinaldi Rinaldi]]>;
<![CDATA[Ani M. Hasan]]>;
<![CDATA[Mustamin Ibrahim]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.3696
<![CDATA[Mobile phones are not only used as a communication tool in the millennial era, but they can also be used in the learning process. Mobile phones are rarely used as a learning tool by students. This study aims to determine the validity level of learning media based on Android applications using Smart Apps Creator (SAC) on mitotic and meiotic cell division material. This type of research is research development, or research and development (R&D), using the ADDIE model, which is modified only up to the development stage with limited trials in class XII IPA 1, SMA Negeri 1, Tapa. The results showed that the results of validating learning media based on android applications using Smart Apps Creator (SAC) on mitotic and meiotic cell division material were included in the "very valid" category with a percentage of 3.93%]]>
<![CDATA[Plant Effectiveness of Acorus calamus, Pistia stratiotes, Azolla pinnata as Hyperaccumulator Candidate of Phytoremediation Agent for Copper (Cu) Absorption ]]>
<![CDATA[Juriyah Astika Dewi]]>;
<![CDATA[Isnaini Nurwahyuni]]>;
<![CDATA[Erman Munir]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4291
<![CDATA[Metals are harmful pollutants because they cannot be broken down by living organisms. An excess of metal can become toxic. The metal in question is copper (Cu). This research aimed to determine the phytoremediation effectiveness of Acorus calamus, Pistia stratiotes, and Azolla pinnata as candidates for Cu metal absorption. This investigation employed a wholly random factorial design with two factors: plant absorbent materials comprised of three plant species (Acorus calamus, Pistia stratiotes, and Azolla pinnata) and absorption concentrations of 2 and 5 ppm. The ANOVA test was used to analyze the data, followed by the average difference test. According to the results of this study, three plants—Acorus calamus, Pistia stratiotes, and Azolla pinnata—are capable of reducing Cu metal in water. The Acorus calamus plant can reduce Cu concentrations in water from 2 ppm to 96.85% and from 5 ppm to 96.80%. Pistia stratiotes plants can reduce Cu level in water from 2 ppm to 96.50% and 5 ppm to 99.94% at concentrations of 2 and 5 ppm, respectively. The Azolla pinnata plant can reduce Cu level in water from 2 ppm to 98.50% and from 5 ppm to 96.54% at concentrations of 2 ppm and 5 ppm, respectively. The highest BCF value at a concentration of 2 ppm is in the roots of Azolla pinnata plants, at 6.77 mg/kg, followed by the leaves, at 8.88 mg/kg. The maximum BCF value at a concentration of 5 ppm for Pistia stratiotes plants is 2.26 mg/kg for the roots and 2.46 mg/kg for the foliage. The greatest concentration of TF at 2 ppm in Azolla pinnata is 1.31 mg/kg, while the maximum concentration at 5 ppm in Acorus calamus is 1.98 mg/kg]]>
<![CDATA[Abundance and Diversity of Polychaete Worms in Kapuas Estuary, West Kalimantan ]]>
<![CDATA[Junardi Junardi]]>;
<![CDATA[Riyandi Riyandi]]>
<![CDATA[ JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2 (2023): Jurnal Pembelajaran Dan Biologi Nukleus July 2023 ]]>
Publisher : <![CDATA[Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu ]]>
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DOI: 10.36987/jpbn.v9i2.4003
<![CDATA[Estuaries provide valuable ecosystem services, but they are also subject to environmental pressures due to high anthropogenic activities. The diversity and abundance of Polychaete can be used as indicators of the health of the Kapuas estuary, but supporting data are currently lacking. The objective of this research is to assess the quality of the Kapuas estuary through a Polychaete community approach. The study employed a survey method by selecting ten Polychaete sampling points based on their surrounding environmental conditions. Samples were collected from each point using a Petite Ponar grab, filtered, sorted, and grouped by family. The Polychaete specimens were identified up to the genus level. The data were analyzed descriptively. A total of 108 Polychaete individuals were found, comprising nine genera and seven families. The highest abundance was observed in the genera Capitella (Capitellidae) and Sternaspis (Sternaspidae), with 778 ind.m-2and 667 ind.m-2, respectively. The diversity of Polychaete in the Kapuas estuary was classified as low, with diversity index ranging from 0.5 to 1.21. The high abundance, low diversity, and presence of indicator genera of organic pollutants such as Capitella indicate that the Kapuas estuary is affected by organic contamination]]>
