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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2,125 Documents
 153   154   155   156   157 
MORFOLOGI SEL-SEL SERAT PADA KAYU EBONI (Diospyros celebica Bakh.) Sunaryo Sunaryo
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i2.1491

Abstract

Sel-sel serat pada kayu eboni (Diospyros celebica) merupakan sel-sel mati yang menyusun massa kayu secara masif. Selain berfungsi sebagai pengalir air dari tanah, sel-sel serat juga mengambil peran sebagai sel-sel penguat. Kekuatan kayu biasanya ditentukan oleli jenis,bentuk dan susunan sel-sel seratnya.Sebagai pengalir,dengan membentuk suatu hidrosistem, sel-sel serat memiliki pola-pola perforasi yang tertentu.Untuk keperluan identifikasi, sel-sel serat diurai dan dipisahkan satu dengan yang lain dengan menggunakan teknik maserasi. Hasilnya menunjukkan ada 4 tipe sel-sel serat pada eboni, yaitu serat trakeida, trakea bertipe penapis, trakea bertipe spiral dan parenkim kayu. Keragaman morfologi dari sel-sel serat yang teramati disampaikan dalam makalah ini.
RESPON PRIMATA TERHADAP KEHADIRAN MANUSIA DI KAWASAN CIKANIKI, TAMAN NASIONAL GUNUNG HALIMUN Imran Said L Tobing
BERITA BIOLOGI Vol 6, No 1 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i1.1175

Abstract

The arrival of human und their activities on protected areas will be a problem causing habitat degradation in quality due to cutting of trees,hunting and noising.This research was conducted to observe the difference of responses of primates to the arrival of human on disturbed and undisturbed forest in Cikaniki area,Mount Halimun National Park. Primates responses to environmental changes will be detected from vigilance behaviour in the form of early detection and reactions.The results of this research indicated that the three species of primates in Cikaniki area (javan gibbon, javan langur, and grizzled langur) generally detected early to the observer's arrival compared to the observer himself detecting the position of primates.The early detection of the three species of primates is slower in disturbed forest compared to the undisturbed one.Furthermore,the reactions of these three species generally negative;although sometimes they response neutrally, but none was positive response in both disturbed and undisturbed forest. This behaviour indicated that although the primates have been adapted to the presence of human (early detection: slower in disturbed forest), but they still vigilant to the presence of human with negative responses.
PERAN GAMBUT TERHADAP NITROGEN TOTAL TANAH DI LAHAN RAWA Arifin Fahmi; Bostang Radjagukguk
BERITA BIOLOGI Vol 12, No 2 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i2.536

Abstract

Peatland has important role in wetland ecosystem stability. Depletion and disappearance of peat layer lead to loss of potential source of nutrient and disruption of wetland ecosystem stability. The research aimed to study the influence of peat thickness and land hydrological condition on the total nitrogen (N) content in soil, the influence of rapidly or naturally the depletion and disappear of peat layer on total N content in soil, and the influence of hydrological condition on total N content in soil. Total N was observed in June of 2009 and 2010 (transition from wet to dry season), September of 2009 and 2010 (peak of dry season), and January of 2010 and 2011 (peak of wet season). The research was carried out on potential acid sulphate soil (A), peaty acid sulphate soil (B),shallow peat which all of peat layers wereremoved (C), shallow peat which peat layer was partially removed (D), shallow peat (E), moderate peat (F) and deep peat (G). The results showed that total N content increased with increasing of peat thickness, the depletion and disappearance of peat layer reduced total N content in soil, and declining in the groundwater level increased total N content in soil.
KONSEP JENIS PALEM: SEBUAH PENGANTAR Himmah Rustiami
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i5.1982

Abstract

In recent decade, the needs of clear species concept for constructing monograph became more crucial. Trends on species concept have been more overwhelming nowadays because of the rigorous phylogenetic species concept based on the idea of the smallest unit sexually from a single population or based on the known lineages within taxa in regard with unique characters combination.This paper would like to discuss further how is the palm species concept and their distribution pattern in West Malesia using case study on the Nypa species concept.
KELIMPAHAN JENIS CORBICULA POSSOENSIS DAN MELANOIDES GRANIFERA (MOLUSKA) DI DANAU POSO, SULAWESI TENGAH MUSTARIM SILUBA
BERITA BIOLOGI Vol 3, No 7 (1987)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i7.1316

Abstract

MUSTARIM SILUBA. 1987.Species abundance Corbicula possoensis and Melanoides granifera Mollusca) in Poso Lake, Central Sulawesi.Berita Bioiogi 3(7): 317 - 320. Corbicula possoensis and Meianoideu granifera are the two dominant species among 18 species of the mollusca that occured in poso Lake.The highly abundance of these two species distributed among three habitat types, i.e. sandy. mudsand, and gTavelly habitat. The study showed that the abundance of C. possoensis is 126,66/m2 in "sandy habitat, 118,66/m2 in mudsand habitat, and 51,00/m2 in gravelly habitat respectively. The abundance of M. granifera was lower then C. possoensis, i.e. 53,00/m2 in sandy habitat, 91.00/m2 in mudsand habitat, and 51,33/m2 in gravelly habitat. It is suggested that the references is done to their preference and their feeding technique.
POLA PERKECAMBAHAN RAMIN (Gonystylus bancanus) DAN EFEKTIFITAS KOMPOSISI MEDIA TANAM Erlin Rachman; Ning Wikan Utami
BERITA BIOLOGI Vol 8, No 1 (2006)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i1.814

Abstract

A research work on seed germination of ramin (Gonystylus bancanus (Miq. Kurz) was conducted to study germination pattern and the effectivity of some composition of planting medias contained compost, cocopeat, organic manure, carbonic sekam and soil.The result showed that the seed germination pattern of ramin at least consist of six stages based on one or more morfological change or an organ formation occured. A growing period needed by the juvenil ramin to grow from a stage to next stage and the seedling plant heigh were taken as parameters to pursued the effectivity of planting media composition. Generally, media contained compost, cocopeat, carbonic sekam and organic manure were much more effective than medium contains soil only. Medium contained compost only was the most effective as planting media based on the two parameters. Cocopeat and carbonic sekam was also recommended as alternative planting media for seed germination and juvenil plant growth of ramin.
INDUKSI BIAK KALUS DAN BIAK SUSPENSI SEL Aquilaria malaccensis Lam. Aryani Leksonowati; Witjaksono Witjaksono; Diah Ratnadewi
BERITA BIOLOGI Vol 16, No 1 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i1.2687

Abstract

Aquilaria malaccensis Lam. is a plant species producing fragrant woody material that contains some resin. The compounds can be used as medicine and perfume. Sesquiterpenoid, one group of compounds has been found being synthesized and subsequently extracted from callus and cell suspension culture of Aquilaria species. The aim of this research was to find a method of producing friable calli and cell suspension cultures from leaves or internodes of A. malaccensis in vitro by using suitable plant growth regulators; cell suspension that will suitably serve as material to produce sesquiterpenoid afterwards. Calli were established in almost all treatments of auxin-cytokinin on both leaves and internod explants. The treatment of 10 mg/L IBA induced the highest percentage of callus coverage from leaves with a rather compact structure. The combined treatment of 1–2 mg/L 2.4-D and 0.2–0.3 mg/L BA induced friable callus formation in more than 80% of cultures with 27–32% callus coverage percentage.  The use of 2,4-D induced a better formation of cell suspension than Picloram, with maximum volume up to 7 mL. Cell suspension culture with fine and homogenous aggregate could be established in the medium supplemented with 0.5 –1 mg/L 2,4-D.
PEMASARAN PRODUK MINYAK CENDANA (Santalum album L.): REALITA, TANTANGAN DAN HARAPAN Hartono Hartono
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i5.1457

Abstract

Salah satu komponen utama masalah tanaman cendana (Santalum album L.) sebagai komoditi perdagangan adalah pemasaran terhadap produk yang diperoleh terutama ekstrak minyaknya. PT Tropical Oil, Kupang, Timor, NTT merupakan suatu perusahaan industri minyak cendana yang selama ini melakukan ekstraksi minyak tanaman cendana menggunakan bahan mentah dari NTT. Makalah ini membahas pandangan pengusaha mengenai jangkauan pasar yang telah dicapai, kecenderungan pasar terhadap produk minyak cendana baik segi kuantitas maupun kualitas, terutama kandungan santalol sebagai komponen mutlak dalam minyak cendana.Berbagai harapan disampaikan,disertai kendala-kendala ketersediaan bahan baku dan pasar(terutama internasional) yang dihadapi seorang pengusaha mulai dari produksi hingga pemasaran dan sumbangsaran demi keberlangsungan produksi dan pemasaran minyak cendana yang telah memiliki segmen pasar tersendiri yang cukup luas.
PEMANFAATAN BERBAGAI SENYAWA NITRIL DAN PRODUK DEGRADASINYA SEBAGAI SUBSTRAT UNTUK PERTUMBUHAN ISOLAT BAKTERI TP Dyah Supriyati; Bambang Sunarko
BERITA BIOLOGI Vol 5, No 4 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i4.1129

Abstract

Our experiments showed that bacterial isolate TP was able to grow on acetonitrile, butyronitrile and propionitrile as sole sources of carbon, energy and nitrogen, but not on acrylonitrile dan benzonitrile. Besides on nitriles, isolate TP could grow on acetamide,propionamide, benzamide and nicotinamide, but not on acrylamide. However, none of the tested carboxylic acids could be used as growth subtrate for bacterial isolate TP. The best growth substrates of isolate TP were butyronitrile (CH3-CH2-CH2-CN) and propionamide (CH3-CH2-CONH2). When isolate TP grew on butyronitrile, the highest biomass concentration, the doubling-time (td), and the specific growth rate1(n) were 8.99 gram cell dry weight/liter, 4.8 h and 0.144 h , and when grew on propionamide were 4.57 gram cell dry weight/liter, 5.7 h and10.122 h", respectively.
KORELASI ANTAR-KARAKTER DAN SIDIK LINTAS ANTARA KOMPONEN HASIL DENGAN HASIL BIJI KACANG HIJAU (Vigna radiata (L) Wilczek) Lukman Hakim; Suyamto Suyamto
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.504

Abstract

A total of 10 mungbean (Vigna radiata (L.) Wilczek) genotipes including check variety (Vima) were evaluated on rainfed after rice at Ngale Experimental Farm, Ngawi, East Java during early dry season of 2010. The experiment was conducted in randomized complete block design with three replications. Plot size was 4 m x 5 m, plant spacing was 40 cm x 20 cm, each hill contained two plants. A correlated and path coefficient analyses were used in order to determine the association among characters and quantify the direct and indirect effects of agronomy traits on seed yield. The study has identified 2 promising lines, i.e. MMC342d-3-4 and MMC342d-kp-3-3 produced the highest yield of 2.2 t and 2.0 t/ha respectively and had good adaptation on rainfed. Two varieties (Kutilang and Kenari) having large seed size (>7.5g/100 seed). Therefore, these varieties can be used as source of parents on breeding program. Among the agronomic characters, number of pods per plant, number of seeds per pod and seed size were positively and significantly correlated with grain yield. The direct effect of number of pods per plant, number of seed per pod and seed size to grain yield as indicated by path coefficient were the highest, while other causal effects to grain yield were small or negative. Based on both analyses, mungbean genotipes with high grain yield should have high number of pods per plant, number of seeds per pod and large seed size. Therefore, number of pods per plant, number of seeds per pod and seed size can be suggested for selection criteria in selecting high yield mungbean genotipes on rainfed.

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