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All Journal Jurnal Pelita Pendidikan Best Journal (Biology Education, Sains and Technology)
Tambunan, Muhammad Iqbal H
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Public Health Social Sciences

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Comparative Evaluation of Cytokinin-Induced In Vitro Shoot Multiplication in Black Ginger (Kaempferia paviflora Wall. ex Baker) Tambunan, Muhammad Iqbal H; Tarigan, Lola Zeramenda; Saragih, Sisca Sri Dewi
BEST Journal (Biology Education, Sains and Technology) Vol 8, No 1 (2025): Juni 2025
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v8i1.11850

Abstract

Kencur hitam (Kaempferia paviflora Wall. Ex Baker) Family Zingiberaceae dari Genus Kaempferia (Kencur-kencuran). Rimpangnya berwarna ungu gelap hingga kehitaman sebagai sumber senyawa bioaktif. Produksi bibit K. parviflora sangat terbatas karena masih secara secara konvensional. Tujuan penelitian untuk mengetahui jenis hormon sitokinin paling baik dalam multiplikasi kencur hitam (Kaempferia parviflora) secara in vitro. Eksplan yang digunakan eksplan in vitro K. parviflora. Media berupa Media Murashige and Skoog (MS) dengan perlakuan P0 (tanpa hormon), P1 (1 mg/l BAP), P2 (2 mg/l BAP), P3 (1 mg/l Kinetin), P4 (2 mg/l Kinetin), P5 (1 mg/l TDZ) , P6 (2 mg/l TDZ) dengan 10 kali ulangan. Parameter yang diamati yaitu persentase eksplan hidup, jumlah tunas, jumlah daun dan panjang tunas.  Hasil penelitian bahwa eksplan hidup 94%, perlakuan P6 (TDZ = 2 mg/L) menghasilkan rata-rata jumlah tunas (4,9 ± 2.6 tunas) dan rata-rata jumlah daun terbanyak,(9,3± 2.2 helai). Hal ini disebabkan oleh tingginya efektivitas TDZ konsentrasi rendah dibandingkan dengan sitokinin lainnya
INTEREST IN LEARNING SCIENCE SUBJECTS AMONG STUDENTS AT SMP AN-NAHLU KISARAN Ilma, Zizni; Nasution, Dara Sumaiya; Tambunan, Muhammad Iqbal H; Saragih, Sisca Sri Dewi; Sari, Dewi Sartika
Jurnal Pelita Pendidikan Vol. 13 No. 2 (2025): JURNAL PELITA PENDIDIKAN
Publisher : Universitas Negeri Medan

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Abstract

This study aims to describe the learning interest of An-Nahlu Kisaran Junior High School students in Natural Sciences (IPA). This study uses a qualitative approach with a descriptive method. The research population consisted of all 144 students in grades VII and VIII (5 classes). Data was obtained through a closed questionnaire that measured aspects of learning interest, including feelings of enjoyment, interest, attention, and student participation in science learning. The results of the study show that the majority of students have a good interest in learning, with an average score of 166.0. The results show that 11% (9 students) are very interested, 38% (31 students) are interested, 30% (25 students) are quite interested, 16% (13 students) are less interested, and only 5% (4 students) are not interested in science subjects. Based on gender, there was no difference between the two. Male and female students had the same level of interest in science subjects. Internal factors, such as motivation, curiosity, and attention, as well as external factors, such as support from family, school, and environment, influenced students' level of interest in learning. From the results of this study, it can be said that the learning environment at SMP An Nahlu has supported the development of students' interest in science subjects.
Co-Authors Ilma, Zizni Nasution, Dara Sumaiya Saragih, Sisca Sri Dewi Sari, Dewi Sartika Tarigan, Lola Zeramenda