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Jurnal Bios Logos
Published by Universitas Sam Ratulangi
ISSN : 20889569     EISSN : 26563282     DOI : https://doi.org/10.35799/jbl.11.2.2020.28153
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology
JURNAL BIOS LOGOS is the journal published by Department of Biology, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University. The aims of the journal are to publish original research papers and article review in biology science i.e. botany, zoology, molecular biology, microbiology, ecology, diversity and conservation, taxonomy and biogeography. BIOS LOGOS is published two times per year (February and August)
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 4, No 2 (2014): JURNAL BIOSLOGOS" : 5 Documents clear
Eksplorasi Plasma Nutfah Jagung Manado Kuning di Sulawesi Utara (The Exploration of Manadonese Yellow Maize Germplasm inNorth Sulawesi Runtunuwu, Semuel D.; Pamandungan, Y.; Mamarimbing, R. Mamarimbing
JURNAL BIOS LOGOS Vol 4, No 2 (2014): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.4.2.2014.6353

Abstract

Abstrak Penelitian ini bertujuan untuk mengoleksi dan mengevaluasi jagung Manado Kuning berdasarkan karakter morfologi tongkol dan biji. Penelitian dilaksanakan dalam dua tahap, yaitu eksplorasi untuk mengoleksi tongkol jagung Manado Kuning dan evaluasi aksesi jagung Manado Kuning berdasarkan karakter morfologi tongkol dan biji. Eksplorasi dilaksanakan pada akhir bulan Agustus 2013 sampai dengan bulan Desember 2013 di sentra produksi. Sentra produksi adalah daerah yang diketahui secara tradisi menanam jagung Manado Kuning  dan daerah yang menggunakan jagung sebagai makanan pokok. Penentuan desa dilakukan bekerjasama dengan Dinas Pertanian Provinsi Sulawesi Utara dan petugas penyuluh lapangan kabupaten/kota. Hasil koleksi berupa tongkol dibuatkan data paspornya. Karakter morfologi yang diamati meliputi susunan baris dan jumlah baris biji, serta warna dan bentuk biji. Analisis data dilakukan menggunakan Program Software SPSS untuk mengelompokkan aksesi jagung. Eksplorasi menghasilkan 28 aksesi. Berdasarkan evaluasi karakter morfologi tongkol dan biji, pada kesamaan genetik 75 % terdapat 2 kelompok jagung Manado Kuning. Kelompok I terdiri dari 6 aksesi dan kelompok II terdiri dari 22 aksesi. Sesuai dengan deskripsi awal, jagung Manado Kuning dengan karakter biji berwarna kuning dengan tipe biji flint mengelompok sendiri pada kesamaan genetik sekitar 95 %, yaitu kelompok IV yang terdiri dari 13 aksesi. Kata kunci: eksplorasi, karakterisasi, aksesi, jagung Manado Kuning Abstract The purpose of this study was to collect and evaluate Manadonese yellow corn cobs and grain based on the morphological characteristics. The study was carried out in two stages, i.e. the exploration for collecting corn cobs Manado Yellow and the evaluation of accession Manadonese yellow corn based on cobs and grain morphological characteristics. The exploration was conducted between late August 2013 and December 2013 in the production centre. The production centre is the area that is traditionally planted corn yellow Manado and the area that used corn as the staple food. The determination of the location was carried out in collaboration with the Department of Agriculture of North Sulawesi and the district/city extension agents. ​​The passport data was made of the results of the cobs data collection. The evaluated morphological characteristics included the arrangement and the number of the seed row, the color and type of seeds. The data was analyzed using SPSS software program to group maize accessions. The exploration resulted in 28 accessions. Based on the morphological characterization of cobs and seeds at the genetic similarity of 75%, there were 2 groups of Manadonese yellow corn. Group I consisted of 6 accessions and group II consisted of 22 accessions. The same as in the initial description, Manadonese yellow corn with flint grain type was grouped itself in 95% genetic similarity, i.e. the group IV that was consisted of 13 accessions. Kata kunci: accession, characterization, exploration, yellow Manadonese corn
Kelimpahan Populasi Capung Jarum (Zygoptera) di Kawasan Taman Nasional Bogani Nani Wartabone, Sulawesi Utara (Population Abundance of Damselfly (Zygoptera) in Bogani Nani Wartabone National Park, North Sulawesi) Wakhid, Wakhid; Koneri, Roni; Tallei, Trina; Maabuat, Pience V
JURNAL BIOS LOGOS Vol 4, No 2 (2014): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.4.2.2014.5234

Abstract

Abstrak Capung jarum (Zygoptera) berperan penting bagi keberlangsungan ekosistem.Pada suatu ekosistem, serangga ini berfungsi sebagai agen pengendali hayati dan bioindikator lingkungan.Penelitian ini bertujuan untuk menganalisis kelimpahan capung jarum yang ada pada tiga habitat di Kawasan Taman Nasional Bogani Nani Wartabone, Sulawesi Utara.Pengambilan sampel dilakukan secara purposive random sampling. Koleksi capung jarum  menggunakan teknik sweepingmengikuti garis transek sepanjang 500 m pada setiap tipe habitat. Jumlah transek pada setiap tipe habitat sebanyak 3 garis transek yang dibuat sepanjang aliran sungai.Hasil penelitian didapatkan sebanyak 13 spesies capung jarum yang terdiri dari 4 famili, yaitu Coenagrionidae, Chlorocypidae, Calopterygidae, dan Platycnemididae. Famili yang paling banyak ditemukan jumlah spesiesnya adalah Coenagrionidae, sedangkan yang paling sedikit Platycnemididae. Berdasarkan tipe habitat, jumlah spesies yang paling banyak ditemukan di hutan primer sedangkan yang paling sedikit di hutan sekunder.Kelimpahan capung jarum tertinggi terdapat pada lahan pertanian, sedangkan kelimpahan terendah pada habitat hutan primer Kata kunci : capung jarum, Taman Nasonal Bogani Nani Wartabone, Sulawesi Utara Abstract Damselfly (Zygoptera) plays important roles in the environment and this organism ia able to be used as biocontrol and bioindicator. This research was aimed to analyze the abundance of damselfly that werelocated at three different habitats in Bogani Nani Wartabone National Park, North Sulawesi. The purposive random sampling method was used to collect the samples. Damselflies were taken by using sweeping technique following 500 m transect line in each habitat. There were three transect lines in each habitat located along the river. The results showed that there were thirteen species from 4 families (Coenagrionidae, Chlorocypidae, Calopterygidae, and Platycnemididae) of damselfly. Most species were members of Coenagrionidae whereas the others werePlatycnemididae Family. Based on the types of habitat, the highest number of species was found in the primary forest, whereas the smallest number was in the secondary forest. Greatest the abundance of damselfly was the largest in the agricultural area and the smallest was in the primary forest. Keywords: damselfly, Bogani Nani Wartabone National Park, North Sulawesi
Penggulungan daun pada tanaman monokotil saat kekurangan air (Leaf rolling in monocotyledon plants under water deficit) Nio, Song Ai; Lenak, Audry Agatha
JURNAL BIOS LOGOS Vol 4, No 2 (2014): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.4.2.2014.5539

Abstract

Abstrak Penggulungan daun merupakan salah satu bentuk resistensi terhadap kekeringan atau lebih tepatnya mekanisme menghindari kekeringan pada tumbuhan monokotil. Mekanisme ini terjadi dengan cara menurunkan laju evapotranspirasi atau dengan meningkatkan absorpsi air pada tanah kering untuk mempertahankan potensial air daun tetap tinggi. Proses penggulungan daun ini berkaitan erat dengan peranan sel kipas. Pada saat kekurangan air, jumlah dan ukuran sel kipas meningkat, sehingga daun akan menggulung. Tingkat penggulungan daun dapat ditentukan secara visual berdasarkan sistem standar evaluasi untuk tanaman padi dengan memberi skor 1-9. Rendahnya tingkat penggulungan daun berkorelasi positif dengan meningkatnya potensial air daun. Kata kunci: menghindari kekeringan, penggulungan daun Abstract Leaf rolling is one mechanism of drought resistance, i.e. drought avoidance. This mechanism was resulted from decreasing evapotranspiration rate or increasing water absorption in the dry soil to maintain high leaf water potential. The process of leaf rolling in monocotyledon was closely related to the activity of bulliform cells. The number and size of bulliform cells were increased under water deficit, so that leaf rolling occurred. Leaf rolling score (1-9) could be visually determined based on the system of standard evaluation in rice. The low leaf rolling score was positively correlated with high leaf water potential. Keywords: drought avoidance, leaf rolling
Dehydrogenase Activities of Flooded Soils: A Review (Aktivitas Dehidrogenase pada Tanah Sawah: Review) Mambu, Susan Marlein
JURNAL BIOS LOGOS Vol 4, No 2 (2014): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.4.2.2014.8305

Abstract

Abstract The definition of soil quality encompasses physical, chemical and biological characteristics, and it is related to fertility and soil health. Soil enzyme activities are the direct expression of the soil community to metabolic requirements and available nutrients, can be used as soil quality indicators. Among all enzymes in the soil environment, dehydrogenases are one of the most important, and are used as indicator of overall soil microbial activity. Flooded soils present a unique situation since they are predominantly under anaerobic conditions in several physical, chemical, and biological characteristics. Flooding changes the chemistry, microbiological properties, and nutrient supply capacity of soil. In particular, the effect of flooding causes an increase on soil dehydrogenase activity. This review examines selected papers containing soil dehydrogenase activities in flooded soil that could be used to determined effect of flooding on soil dehydrogenase activity. Keywords: dehydrogenase activities, flooded soils, soil quality Abstrak Definisi kualitas tanah meliputi faktor fisik, kimia dan biologi, dan terkait dengan kesuburan dan kesehatan tanah. Aktivitas enzim tanah adalah ekspresi langsung dari komunitas tanah untuk melakukan proses metabolik untuk menghasilkan nutrisi, dan dapat digunakan sebagai indikator kualitas tanah. Di antara semua enzim dalam lingkungan tanah, dehydrogenase adalah salah satu yang paling penting, dan digunakan sebagai indikator aktivitas mikroba tanah secara keseluruhan. Tanah sawah dengan kondisi tergenang menyajikan situasi yang unik karena secara fisik, kimia, dan biologi berada dalam kondisi anaerob. Penggenangan menyebabkan terjadinya perubahan secara kimia, mikrobiologi, dan kapasitas pasokan hara tanah. Secara khusus, Efek penggenangan menyebabkan peningkatan aktivitas dehidrogenase tanah. Tulisan ini mengkaji beberapa penelitian mengenai aktivitas dehidrogenase pada tanah sawah, yang dapat digunakan untuk menentukan efek pengenangan terhadap aktivitas dehidrogenase tanah. Kata Kunci: aktivitas dehidrogenase, tanah sawah, kualitas tanah
Kajian ethylene triple response terhadap kecambah tiga varietas kedelai (Study of ethylene triple response on the seedlings of three varieties of soybean) Wardani, Kartika Eka; Mantiri, Feky Reky; Nio, Song Ai; Rumondor, Marhaenus
JURNAL BIOS LOGOS Vol 4, No 2 (2014): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.4.2.2014.6152

Abstract

AbstrakKeterbatasan lahan tanam di Indonesia merupakan salah satu faktor pembatas dalam pembudidayaan tanaman kedelai. Oleh sebab itu kedelai di tumpangsarikan dengan tanaman lain, sehingga ternaungi. Naungan pada tanaman menyebabkan tingginya produksi etilen sehingga tanaman akan memunculkan triple response yang dapat mempengaruhi pertumbuhan dan perkembangan tanaman. Oleh sebab itu, penelitian ini dilakukan untuk menyeleksi varietas kedelai yang tahan dengan adanya peningkatan etilen pada tiga varietas kedelai (Edamamik, Anjasmoro, Wilis). Setelah dikecambahkan selama 5 hari, panjang kedelai varietas Wilis yang diberi etilen (karbid) adalah yang tertinggi dan Anjasmoro adalah yang terendah. Bengkokan kedelai dengan derajat terendah diamati pada varietas Wilis dibandingkan dengan dua varietas lain. Diameter ketiga varietas tidak berbeda antara yang normal dan diperlakukan dengan karbid. Pengamatan ketiga parameter ini menunjukkan varietas Wilis adalah tanaman yang tahan terhadap peningkatan etilen, sehingga varietas ini berpotensi untuk ditanam di naungan.Kata kunci: etilen, triple response, kedelaiAbstractLimitation of arable land in Indonesia is one of the limiting factors in soybean cultivation. Consequently, soybean is sometimes cultivated as an intercropping crop. One of the major problems of intercropped plants is shading. Shading triggers increased production of ethylene, which in turn affects germinating seeds to exhibit ethylene triple response. The study aimed to screen different varieties of soybean (i.e., Edamamik, Anjasmoro, Wilis) for resistance to increased consentrationof ethylene. Results showed that five days after germination, the height of Wilis was the highest, while the height of Anjasmoro was the lowest. Similarly, the degree of hook on Wilis was the lowest compared with the other varieties. Meanwhile, the diameter of the seedlings was not significantly different among the three varieties. Based on these findings it was concluded that Wilis variety was the most resistant to increased concentration of ethylene and therefore was most suited for intercropping (shade environment).Keywords: ethylene, triple response, soybean

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