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All Journal Bioscience Jurnal Produksi Tanaman Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis Jurnal Ilmiah Ilmu Keperawatan Indonesia (Indonesian Nursing Scientific Journal) Bioedukasi: Jurnal Pendidikan Biologi Serambi Biologi Pelita Eksakta Jurnal Metaedukasi : Jurnal Ilmiah Pendidikan Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA International Journal of Education and Literature (IJEL) Tropical Genetics Jurnal Serambi Biologi Literasi Bahasa dan Sastra Jurnal
Violita Violita
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Transportation Veterinary Other

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Analisis Butir Soal Biologi Kelas XI Madrasah Aliyah Sakinah Kerinci Menggunakan Program Komputer Anates 4.0 For Windows Fietri, Winda Ayu; Zulyusri, Zulyusri; Violita, Violita
Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Vol 7, No 1 (2021)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

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Abstract

This study aims to find out the quality of the details of biology class XI MAS Kerinci about the excretory system by using the program anates version 4. This research uses descriptive quantitative approach and data collection techniques conducted with test techniques in the form of questions about the excretory system amounting to 40 points in the form of multiple choice. The population in this study was all students of grade XI MAS Kerinci as many as 40 students. The sample in this study as many as 36 students determined through the formula Slovin with a level of significance of 5%. Data analysis using computer program Anates version 4 for windows. The results showed a very high problem reliability rate of 0.90, good differentiating power of 47.5%, medium difficulty rate of 90%, and excellent pengecoh quality of 100%. 
Analysis of the Questions Item for Biology Olympiad Participants Subari, Ahmad; Zulyusri, Zulyusri; Violita, Violita
Bioedukasi: Jurnal Pendidikan Biologi Vol 14, No 1 (2021): BIOEDUKASI: Jurnal Pendidikan Biologi
Publisher : Department of Biology Education Faculty of Teacher Training and Education Sebelas Maret Un

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/bioedukasi-uns.v14i1.47100

Abstract

Biology Olympiad is one of the national tests run annually. The quality of the item tests needs to be analyzed details. This study aims to determine the quality of the MAN (Public Islamic School) Model Biological Olympiad questions in Jambi City. The subjects in this study were 10 graders of MAN Model Jambi City who attended the Biology Olympiad training. The data analysis technique used in this study was a program called States 4.0.9. The results in the study showed that for the validity of the items at the coefficient level of 5%, there were 13 valid questions and 27 invalid questions. Meanwhile, for the reliability of the questions, the value was 0.46 which was categorized as sufficient. Furthermore, for the difficulty level of the questions, they were 3 questions in the easy category, 16 questions in the medium category, and 21 questions in the difficult category. Then for the results of the distinguishing power of the questions, 7 questions were categorized as very good, 12 questions were categorized as good, 7 questions were categorized as poor, and 14 questions were categorized as very poor. Meanwhile, for the results of the analysis of the quality of distracting items, there were 4 questions with quality was categorized as very good and good, while the rest were classified as poor, poor, and very poor criteria, or those criteria need to be revised.
IDENTIFICATION OF DROUGHT TOLERANCE OF SOME WEST SUMATERA LOCAL RICE (Oryza sativa L.) AT GERMINATION STAGE USING PEG 8000 Sakinah Azhari; Violita Violita
Serambi Biologi Vol 4 (2019): Bio Sains
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/5062RF00

Abstract

Drought-tolerant hybrid rice breeding certainly requires parental lines who are also tolerant to drought. The selection of superior rice elders usually comes from local rice. Polyetilene glycol (PEG) has been widely used as an osmotic solution to detect plant drought tolerance in the germination phase, especially PEG 6000. This study aims to determine the effect of PEG 8000 on rice germination and find out local drought tolerant rice varieties using drought susceptibility index (DSI) values through several germination variables, namely germination percentage, shoot length and seminal root, weight of shoots and seminal roots. The experiment was conducted at the Integrated Research Laboratory, Biology Department, FMIPA State University of Padang, using factorial randomized block design with 2 factors 3 replications with the first factor being 6 rice varieties while the second factor was 3 levels of PEG 8000 concentrations (PEG 8000 0%, 10% and 20%). If the DSI value is ≤ 0.5 then the variety is tolerant, if 0.5 <DSI ≤1.0 then the variety is medium and if DSI> 1.0 then the variety is intolerant (sensitive). The classified tolerant variety is Harum and Baroto; while sensitive varieties is Keriting and Batang Palo. The classified moderat variety is Situbagendit and Randam Kaus.
UTILIZATION OF LIQUID ORGANIC FERTILIZER BASE ON COW (Bos taurus) URINEAS HYDROPONIC NUTRITION IN PAKCOY (Brassica chinensis L.) PLANT Selva Dena Nusima; Violita Violita
Serambi Biologi Vol 5, No 2 (2020): Serambi Biologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/5959RF00

Abstract

Abstract. Pakcoy (Brassica chinensis L.) is a type of vegetable consumed by many people because of its high nutritional content. The obstacle in producing pakcoy is that the land for farming decreases as population growth grows. One way to overcome this is to plant hydroponics by utilizing cow urine as nutrition. This study studied liquid nutrients made from cow urine (Bos taurus) as hydroponic nutrition in the growth of Pakcoy (Brassica chinensis L.) plants. This research is an experimental study. The design used was a completely randomized design with 5 assemblies and 4 replications namely K (AB Mix 10 mL / L air), P1 (8 mL / L air), P2 (10 mL / L cow urine), P3 (cow urine) 12 mL / L air), P4 (cow urine 14 mL / L). The data obtained were analyzed using Analysis of Variance ANOVA. The parameters considered were tall plants, number of leaves, wet weight and dry weight. The results showed the facts about the conservation of hydroponic nutrition of organic fertilizers made from cow urine provided were not significantly different and could not increase the growth of pakcoy (Brassica chinensis L.) plants.Keywords: Pakcoy, Hydroponics, Cow Urine.
Morphological Indices of Drought Tolerant of Some Paddy Varieties (Oryza sativa L.) In West Sumatera Using Standard Evaluation System (SES) For Rice syauli mardita; Violita Violita
Bioscience Vol 3, No 1 (2019): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.862 KB) | DOI: 10.24036/0201931103278-0-00

Abstract

Rice is an important food crop that consumed by more than half of the world's population, but almost every year there is decrease rice production in field, this is due availability of land and water as main source of agriculture. Therefore optimization of dry land as agricultural is needed, but many things are of concern to dry land, especially water sources are minimal. Therefore, it is need have rice seeds are suitable and adaptive to dry land, the response of rice plants to drought can observed from physiological, morphological and anatomical changes. This research was conducted in August to December 2018 in research laboratories, wire houses and plant physiology laboratories, Faculty of Mathematics and Natural Sciences, Padang State University. This study was to obtain a drought tolerant morphological index from several paddy seeds in West Sumatera, so indexes showed that rice seeds were tolerant to drought by observing morphological changes, namely leaf rolling (DPD), shoot top index (IKP). ), and plant recorvry (TP) using the SES (Standard Evaluation System) method for rice. Data is processed using cluster analysis with hierarchical analysis methods. The results showed the most resistant varieties to drought stress were’s Baroto, Situ Bagendit, Randah Kuniang, and Harum.
Analysis of the Knowledge and Skills of Science Teachers in the Northern Region of Solok Regency in Planning Implementing and Evaluating 21st Century Learning Zuhratul Mardiyah Amir Amir; Dwi Hilda Putri; Abdul Razak; Violita Violita
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3328

Abstract

This study aims to determine the Knowledge and Skills of Science Teachers MGMP IPA North Region Solok Regency in Planning, Implementing and Evaluating 21st Century Learning This research is a type of descriptive research. The population in this study came from the North Region Science MGMP of Solok Regency. The sample of this study came from SMPN 1 X Koto Diatas, SMPN 1 Singkarak and SMPN 1 Junjung. The sample technique is purposive sampling. Data collection techniques are tests, observations, questionnaires, interviews and documentation. Data analysis in the form of quantitative and qualitative descriptive analysis. The results of the study can be concluded that the knowledge and skills of MGMP IPA science teachers in the northern region of Solok district are very good in planning, implementing and evaluating students' 21st century learning. This can be seen from the 21st century learning analysis value of SMP 1 X Koto Diatas of 78.15 good category, SMPN 2 of 78.56 good category Kubung and SMPN 1 X Koto Singkarak of 89.46 excellent category. So, teachers are guided to be able to apply 21st century learning, so as to improve the quality of Indonesian education
Rice Growth Response to Drought Simulation Treatment Using PEG Annisa Khaira; Zulyusri Zulyusri; Afifatul Achyar; Dwi Hilda Putri; Yusni Atifah; Violita Violita
Bioscience Vol 7, No 2 (2023): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bsc.v7i2.122674

Abstract

Rice is the main food source for Indonesians. The demand for rice to meet people's needs increases every year due to population growth and efforts to improve nutrition by the community. One of the problems that can affect rice production is drought. Drought is an environmental condition when plants do not get enough water to grow and develop optimally, which can cause a decrease in rice production. To find out how rice growth responds to drought, a study was carried out by giving drought simulation treatments using polyethylene glycol (PEG) on several rice varieties. This study used a completely randomized design that was arranged in a factorial manner with two factors. The first factor was the rice varieties (Harum, Situbagendit, Rosna) the second factor was 0% and 20% PEG concentration. The data obtained were then analyzed statistically using a two-way ANOVA test, and if the results were significantly different, then proceed with Duncan's test at the 5% level.The results showed that the drought simulation treatment had a negative effect on rice growth. Drought simulation treatment using 20% PEG resulted in a decrease in Kadar air relatif (KAR), root length, plant height, and root dry weight of rice. The highest decrease in KAR was found in the sensitive rice variety (Rosna), which was 43.42%. The highest average root length (7.99 cm) was on the sitabaendit variety, and the lowest (5.61) was on the rosna variety. The highest average crown height (17.32 cm) and the lowest (6.61) were on the rosna variety.
Potential Of Pseudomonas fluorescens As Plant Growth Promoting Bacteria Claudia Ayesha; Linda Advinda; Violita Violita; Dezi Handayani
Jurnal Serambi Biologi Vol. 8 No. 1 (2023): Jurnal Serambi Biologi
Publisher : Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang

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Abstract

Plant growth promoting bacteria or Plant Growth Promoting Rhizobacteria (PGPR) are soil bacteria found in the root area which function to increase plant growth. Most of them came from the Gram-negative group with the highest number of strains from the genus Pseudomonas. Pseudomonas fluorescens is able to produce IAA, siderophores and phosphate solubilizing compounds, fixes nitrogen and exhibits plant growth promoting activity. Therefore, this bacterium is very potential as a PGPR. This study aims to collect and analyze articles related to the potential of Pseudomonas fluorescens as a plant growth promoting bacterium. This type of research is research that uses internet sources from the Google Scholar database. The stages consist of identification, screening, eligibility and acceptance. Based on the articles collected, it was found that Pseudomoas fluorescens is one of the Plant Growth Promoting Rhizobacteria (PGPR). PGPR affects plant health and soil fertility by offering an excellent combination of properties that are useful in promoting plant growth, namely producing IAA and siderophores, dissolving phosphate, fixing nitrogen and exhibiting plant growth promoting activity.
Isolation of Phosphate Recruiting Endophytic Fungi from the Leaves of the Symphony Fern Plant (Cibotium Barometz (L.) J.Sm) Safira Nurul Fadila; Dezi Handayani; Azwir Anhar; Violita Violita
Jurnal Serambi Biologi Vol. 8 No. 2 (2023): Jurnal Serambi Biologi
Publisher : Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang

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Abstract

Phosphate is one of the elements needed in large quantities for plant growth and development. Phosphate can be found in soil, but generally in the form of bound phosphate, so that it cannot be used by plants. Generally, farmers overcome the availability of phosphate for plants using phosphate fertilizer, but this method is not effective. Another alternative is needed to overcome the availability of phosphate in the soil. One alternative that can be used is to use phosphate-solubilizing endophytic fungi. Phosphate-solubilizing endophytic fungi can be isolated from the leaves of the Simpei fern (Cibotium barometz (L.) J.Sm.). The Simpei fern plant contains organic acids, so endophytic fungi isolated from the leaves of the Simpei fern plant are expected to produce the same organic acids and be able to dissolve phosphate. Therefore, this study aims to determine the phosphate solubilizing activity of the leaves of the Simpei fern plant. The samples used were the leaves of the symbiotic fern. The fungus obtained was tested using Pikovskaya medium. Phosphate solubilizing activity is characterized by the formation of a clear zone around the fungus colony. Six isolates of endophytic fungi from the Simpei fern plant were obtained, namely D1, D2, D3, D4, D5, and D6. Two isolates have phosphate solubilizing activity, namely isolates D2 and D4. The highest phosphate solubility index was shown by isolate D2 on the first day of 0.8. The phosphate solubility index of all isolates is low. Key words: endophytic fungi, fosfat, isolated, activity
Morphological Response of Several Rice Varieties to Drought Stress Simulation using PEG Rezi Nabilah; Afifatul Achyar; Zulyusri Zulyusri; Yusni Atifah; Dwi Hilda Putri; Violita Violita
Bioscience Vol 8, No 1 (2024): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bsc.v8i1.122676

Abstract

Rice has become food for most of the world's population. Indonesia is the third largest producer in the world. However, in fact rice production in Indonesia has decreased by 0.43% compared to 2020. One of the factors that can cause this decline is drought. Because rice is a semi-aquatic plant that grows normally in flooded conditions, it makes drought stress very threatening. Drought stress that occurs in plants causes plants to experience oxidative stress due to excessive accumulation of ROS. PEG is a compound that is widely used to provide drought conditions in plants. Previous research has classified several varieties of rice plants based on their level of resistance to drought. However, it is not yet known how the morphological response will be in different periods of drought stress and rewatering treatment. This research was conducted by giving treatment in the form of control (Yoshida nutrient culture solution) and drought stress (Yoshida + PEG-6000 20% solution) repeated 3 times. The observed parameters were RWC which were analyzed using standard errors and morphological images of roots and leaves. The results showed that the RWC obtained during the stress period from the third to the fifth day, Harum had the highest value according to its class as tolerant rice. After rewatering Rosna has a better recovery ability. In addition, root morphology shows differences in the form of root length, small root diameter, inhibition of adventive root growth. On the leaves include a decrease in leaf area, leaf curl up, and leaf yellowing.
Co-Authors Abdul Razak Achyar, Afifatul Alti, Rizka Putri Annisa Khaira Atifah, Yusni Azwir Anhar Christy, Arifah Claudia Ayesha Des M Desmayanti, Resti Devinda Devinda Dezi Handayani Dwi Hilda Putri Elsa Yuniarti Elya, Mardoni Farma, Sisca Alicia Fevria, Resti Fietri, Winda Ayu Handayani, Nurhayati Dwi Ida Elfira Irni Furnawanthi Hindaningrum Kardiman, Reki Kartiman, Roni Linda Advinda Linda Novita Monica, Della Trya Moralita Chatri Noficandra, Habibullah Nofitria, Atika Sari Nurul Hasanah Oktaviani, Mutia Putri, Amaliani Putri, Annisa Anike Putri, Isna Aryunita Putri Putri, Lidya Eka Resmiari, Resmiati Rezi Nabilah Rijal Satria Rizka Meisy Evis Putri Safira Nurul Fadila Sakinah Azhari Selva Dena Nusima Subari, Ahmad Suciyatiningrum, Risma Syahfitri, Aulia Insyani Syaifullah, Annisa syauli mardita Tarigan, Siti Nadiah Zahra Br Tazri, Mufidah Insani Tomi Apra Santosa Vauzia Vauzia Vauzia, Vauzia Wulandari, Tesya Zuhratul Mardiyah Amir Amir Zulyuri, Zulyuri Zulyusri Zulyusri Zulyusri Zulzusri, Zulzusri