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The Physiological Responses of Zea Mays L. and Cucumis Sativus L. on Drought Stress and Re-Watering Meriem, Selis; Muliyah, Evi; Angio, Melisnawati H.; Triadiati, Triadiati
Jurnal Biodjati Vol 6 No 2 (2021): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v6i2.12572

Abstract

Drought leads to deficit water availability and its detrimental effects seriously threaten plant growth. This study assessed the physiological, biochemical, and antioxidant adjustments in different types of photosynthetic plants between Zea mays L. (C4) and Cucumis sativus L. (C3 plant) under response to short-term drought stress. Analyses of relative water content (RWC), proline, and ascorbic acid (AsA) were performed to explore how these plants react to drought. Fifteen-day-old plants were subjected to full irrigation or gradual drought periods for 2-d, 4-d, 6-d, and 8-d following by recovery for 7-d. The results revealed that drought significantly reduces leaf RCW in both plants. Re-watered Z. mays after 8-d drought was higher than C. sativus and reestablished RCW by 23% of stressed plant although remained lower by 9% of the well-watered plant. While, proline and AsA contents in Z. mays were higher than those in C. sativus in drought treatment at 8-d (2.05 µmol/g FW) and 6-d (3174.60 AsA/100 g FW), respectively, that could demonstrate osmotic adjustment ability in this C4 species. The increased proline in both plants also indicates a good strategy for plants to recover. Rewatering gave a decrease AsA and could be expected that plants restore cellular activity after oxidative injury. Based on our study, proline is the most informative biochemical marker to differentiate plant response to drought and Z. mays adjusted defense mechanism to drought rather than C. sativus due to higher accumulation of proline, better antioxidant activity, and improved RCW after recovery.
Keanekaragaman Jenis Pohon dan Pola Penyebarannya pada Beberapa Wilayah Kawasan CA dan TWA Pananjung Pangandaran Azuhra, Fatimah; Fatina, Ikfina Nawal; Hasna, Chumairo Nurul; Hanifiyah, Nur; Azizy, Maulana Khalil; Muliyah, Evi
Biosel Biology Science and Education Vol. 15 No. 1 (2026): BIOSEL (Biology Science and Education: Jurnal Penelitian Sains dan Pendidikan)
Publisher : INSTITUT AGAMA ISLAM NEGERI AMBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/bs.v15i1.11189

Abstract

The Pananjung Pangandaran Nature Reserve (CA) and Recreational Park (TWA) are in-situ conservation areas that play an important role in preserving biodiversity, particularly lowland forest flora along the southern coast of West Java. However, these areas are increasingly subjected to anthropogenic pressures resulting from tourism activities and population growth, which may affect ecosystem stability. This study aimed to analyze tree species diversity, identify tree distribution patterns, and assess abiotic components within the CA and TWA of Pananjung Pangandaran. The research employed a quantitative descriptive method with an exploratory approach using the line transect technique at three observation stations, namely coastal forest and lowland forest areas within the CA, as well as lowland forest areas within the TWA. A total of nine observation plots measuring 20 × 20 m were established. The results showed that tree species diversity in the western coastal forest of the CA, the lowland forest of Ciborok Block in the TWA, and the lowland forest of Cikamal Block in the CA was categorized as moderate, with Shannon-Wiener diversity index (H’) values ranging from 1.029 to 1.742 and a uniform distribution pattern. Overall, each observation station exhibited a distinctive vegetation composition, resulting from varying interactions between biotic and abiotic components. Keywords: Tree Species Diversity, Tree Distribution Pattern, Shannon-Wiener Index, Nature Reserve, Recreational Park
Peningkatan Motivasi dan Hasil Belajar Peserta Didik Pada Pembelajaran Diskusi Isu Sosiosaintifik Melalui Kunjungan Lapangan Salwa Mutia, Nabila; Herlanti, Yanti; Muliyah, Evi
Jurnal BIOEDUIN : Program Studi Pendidikan Biologi Vol 16 No 1 (2026): Bioeduin: Februari
Publisher : Department of Biology Education UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/bioeduin.v16i1.48795

Abstract

The Bogor Botanical Gardens possess considerable potential as a learning resource; however, only a limited number of schools utilise this opportunity. This study aims to examine the impact of the field trip method at the Bogor Botanical Gardens on students’ motivation and learning outcomes in the topic Ecosystem Components and Their Interactions. A quasi-experimental design was employed. The participants comprised 22 male and 35 female students, divided into two groups: the control and the experimental groups. The experimental group participated in a field trip, while the control group followed the conventional method typically used by teachers, namely group discussions. During the third session, both groups engaged in discussions based on socioscientific issues. The results indicated no significant difference in overall learning outcomes between the two groups. However, an analysis using Bloom’s taxonomy showed that the experimental group performed better in the domains of understanding (C2) and application (C3). In contrast, the control group excelled in the analysis domain (C4). Similarly, there was no significant difference in learning motivation between the two groups. Nonetheless, students in the experimental group displayed enthusiasm, expressed enjoyment, and found the materials easier to comprehend during field-based learning activities. Based on these findings, field trips to the Bogor Botanical Gardens may enhance the affective domain and foster more conscious, meaningful, and enjoyable learning experiences.
KEANEKARAGAMAN JENIS LICHENES SEBAGAI BIOINDIKATOR KUALITAS UDARA DI CAGAR ALAM PANANJUNG PANGANDARAN Nurhayati, Desi; Reyhan Rabbani, Muhammad; As-Syifa, Galuh Daneswari; Fauziah, Putri; Syafiqoh, Irma; Muliyah, Evi; Mardiati, Yuke
Teknosains Vol 19 No 3 (2025): September-Desember
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/teknosains.v19i3.60934

Abstract

Lichen adalah organisme simbiotik antara jamur dan alga atau cyanobacteria yang sangat sensitif terhadap perubahan kualitas udara. Penelitian ini bertujuan untuk mengkaji keanekaragaman jenis Lichenes sebagai indikator kualitas udara di Cagar Alam Pananjung Pangandaran, Jawa Barat. Kawasan konservasi ini memiliki zonasi yang unik, yaitu bagian dalam (primer) dan luar (sekunder), yang berbatasan langsung dengan aktivitas wisata, sehingga potensi tekanan pencemaran udaranya perlu diukur. Namun, data mengenai kualitas udara berbasis bioindikator di kawasan ini masih terbatas. Metode yang digunakan adalah eksplorasi jelajah di dua lokasi, yaitu kawasan Cagar Alam Pangandaran bagian dalam dan luar. Data yang dikumpulkan meliputi jenis dan jumlah Lichenes, serta faktor abiotik seperti suhu, kelembaban, dan intensitas cahaya. Dari data tersebut dihitung indeks keanekaragamannya menggunakan rumus indeks keanekaragaman Shannon-Wiener. Hasil penelitian menunjukkan bahwa kawasan dalam Cagar Alam memiliki keanekaragaman tinggi (H' = 2,95), sedangkan di kawasan luar hanya ditemukan dua spesies yang toleran terhadap polusi, yaitu Dirinaria picta dan Dirinaria applanata dengan H' = 0,67. Temuan ini mengonfirmasi bahwa kawasan luar cagar alam mengalami tekanan kualitas udara yang lebih besar dibandingkan kawasan dalam. Studi ini secara praktis mengimplikasikan pentingnya pemantauan lingkungan berkelanjutan di kawasan penyangga cagar alam dan memperkuat peran Lichenes sebagai alat bioindikatoryang efektif dan murah dalam strategi konservasi.