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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
 175   176   177   178   179 
PERAN PEMUPUKAN POSFOR DALAM PERTUMBUHAN TANAMAN JAGUNG (Zea mays L.) DI TANAH REGOSOL DAN LATOSOL Arifin FahmF; Syamsudin Syamsudin; Sri Nuryani H Utami; Bostang Radjagukguk
BERITA BIOLOGI Vol 9, No 6 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i6.851

Abstract

Phosphorus (P) is an essential element for plants, deficiency and excess of P in soil will limit plant growth. It is required to applicate P fertilizer in appropriate dosage for promoting plant growth on the soil with different properties. The purpose of experiment was to study the respon of maize (Zea mays L.) for phosphorus fertilization on Regosol and Latosol soils. A glass house experiment was conducted to study maize response on P fertilizer application in Regosol and Latosol soils. The treatment 1was 0, 112, 336, 1008, 3024 and 9072 kg superfosfat ha . P fertilizer tend to increase the biomass of maize but exceed of P fertilizer reduced maize biomass. The optimum fertilization and vailability of P for plant affected by soil properties.
PENGARUH PEMBERIAN ELISITOR JAMUR Phytium aphanidermatum (Edson) Fitzp. TERHADAP KANDUNGAN AJMALISIN PADA KULTUR KALUS BERAKAR Catharanthus roseus (L.) G. Don Aprianita Aprianita; Esyanti RR; AH Siregar
BERITA BIOLOGI Vol 6, No 4 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i4.3448

Abstract

An experiment to study the effect of ellicitor derived from Phytium aphanidermatum On ajmalicine content of Catharanthus roseus root- callus culture has been conducted. Root-callus was induced  from left segment, and grew optimally on Zenk medium with the addition of  10-7 M BAP and 10-5 M NAA. Root-callus was subcultured three times, and followed with elicitation with elicitor derived from autoclaved  P. aphanidermatum. The concentration tested were 0.50, 0.5, 1.0 and 5.0 mg DW/ml, and harcested at 0,18,36 and 72 hours. The ajmalicine was analyzed qualitatively and quantitatively by using High Performance Liquid Chromatography (HPLC). The result showed that ajmalicine content was influenced significantly by concentration of ellicitor and harvesting time. A significant increase of ajamalicine content (153.29 ± 1.61 mg/g DW) was achieved by additon of 1 mg Dw/ml ellicitor after 36 hours incubation. 
EBONI DAN HABITATNYA Merryana Kiding Allo
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.v6i2.1492

Abstract

Eboni (Diospyros celebica Bakh.) merupakan komoditi primadona dari hutan Sulawesi.Dunia mengenal bahwa jenis pohon eboni hanya dapat dijumpai tumbuh di hutan-hutan Sulawesi yang masuk ke dalam wilayah Wallacea.Lingkungan merupakan syarat dari suatu kondisi ekosistem bagi pertumbuhan suatu jenis tumbuhan, jadi pengetahuan tentang habitat suatu jenis merupakan dasar bagi kegiatan pengembangan eboni.Dengan menggunakan cara 'purposive' sesuai keberadaan kelompok eboni di alam, ditemukan bahwa eboni dapat tumbuh dan berkembang optimal pada ketinggian tempat mulai dari 60 m sampai 450 m di atas permukaan laut, kemiringan 10° sampai 30°,tanah-tanah bertekstur lempung, liat dan berpasir tanpa genangan, pH tanah agak masam yaitu 6,44, tipe iklim A dengan curah hujan berkisar 2000 - 2500 mm per tahun dengan suhu rata-rata 26,6°C dan kelembaban rata-rata 93%.Eboni umumnya ditemukan hidup berasosiasi dengan jenis-jenis tumbuhan yang berasal dari famili Rubiaceae.
Nepenthes gymnamphora Nees. DI TAMAN NASIONAL GUNUNG HALIMUN DAN PENYEBARANNYA DI INDONESIA Muhammad Mansur
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.v6i1.1176

Abstract

The preliminary study of Nepenthes gymnamphora Nees. was carried out on May 2001 in Halimun Mountain National Park. West Java by survei method and direct observation in its original habitat. Some samples were collected for morphological study, taxonomical identification and specimen collections for Herbarium Bogoricnse, Bogor. N. gymnamphora founded on summit of Mt. Kendeng (1020 m asl) and Wales area in Bogor-Sukabumi border (1120 m asl). Habitat, morphology, conservation and their distribution in Indonesia is explained.
KEMAMPUAN BEBERAPA JAMUR TANAH DALAM MENGURAIKAN PESTISIDA DELTAMETRIN DAN SENYAWA LIGNOSELULOSA YB. Subowo
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.v12i2.537

Abstract

Some of soil fungi capable in degrading pesticide deltamethrin, therefore they can be used as fertilizer in organic farming. As a biofertilizer ,fungus also must be able to provide nutrients for plants. The purpose of the study was to obtain fungal isolates that have the ability to decompose pesticides deltamethrin and lignocellulose compounds, dissolved inorganic phosphate compounds and produce growth hormone IAA (Indole Acetic Acid) . The fungal isolates will then be used in the manufacture of bio-fertilizers. Soil samples were put into mineral medium containing deltamethrin, fungus that grew on this medium would then be isolated. The ability of fungus in decomposing deltamethrin was observed using GC. While the ability of fungi to decompose lignocellulose, to dissolve inorganic phosphate compounds and to produce IAA was observed using a spectrophotometer. The results showed that the fungus Aspergillus niger TR1 had the ability to degrade 90.68% of deltamethrin 500 ppm after 1 h incubation and to degrade 0.46% of Poly R - 478 by after 30 min incubation. In addition, this fungus had cellulase activity of 0.029 units/ml and were able to dissolve inorganic phosphate compounds and produce IAA.
KINERJA Saccharomyces cerevisiae REKOMBINAN [GLO1] DALAM PROSES SIMULTAN HIDROLISIS PATI DAN FERMENTASI UNTUK PRODUKSI BIOETANOL Afaf Baktir; Nur Cholifah; Sri Sumarsih
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.v9i5.1983

Abstract

Recent development in fermentations for bioethanol production were focused three factors, i.e. abundance and cheap substrates,superior yeast fermenting the substrates, and simultaneous saccharification and fermentation (SSF) technology.Nowadays national and world bioethanol production still depend on sugar cane and starchy materials.This research aims to determinate the optimum simultaneous saccharification and fermentation (SSF) conditions to identify the performance of local strain Saccharomyces cerevisiae recombinant [GLO1] in the producing bioethanol from starch.The optimum conditions for SSF process are in a media composition containing glucose 2% (w/v), starch 5% and at aeration rate 50 rpm.At these optimum conditions Saccharomyces cerevisiae recombinant [GLO1] produce 25.36% (v/v) bioethanol at day-20 of the fermentation process design.
ANALISA BEBERAPA SIFAT FISIKA KIMIA AIR TERHADAP ADANYA BLOOMING MICROCYSTIS AERUGINOSA KUTZ. DI BAGIAN TENGAH WADUK JATILUHUR I NJOMAN K. KABINAWA
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.v3i7.1317

Abstract

I NJOMAN K.KABINAWA 1987.Analysis of some physical-chemical factors affecting the blooming of Microcystis aeruginosa Kutz. in the central part of the man made lake Jatiluhur. Berita Biologi 3(7) : 321 -325. An investigation on some physicai-chemical factors which may affect the occurence of blooming Microcystis aeruginosa Kutz.was conducted in the central part of the man made lake Jatiluhur from April to June 1981. Observation was carried out in the morning (07.30 -09.00) and in the afternoon (12.30 - 14.00) in the interval three a week. The investigation,included physical-chemical properties of the water,a quantitative and volumetric assessment of the Microcystis colonies.The water of this man made lake is considered relatively suitable for the growth of many aquatic organisms.At the commence of the blooming of the algae the oxygen, calcium, phosphate and nitrate content tend to increase, and so the water temperature.During the blooming of the Microcystis the number of colonies 39,585 and 35,685 per litre was achieved, while the volume was about 0.32 - 0.34 ml per litre.
DETEKSI Pseudomonas syringae pv. glycinea (PSG) MENGGUNAKAN ANTIBODIPOLIKLONAL DAN NCM-ELISA Y Suryadi; M Machmud
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.v8i1.815

Abstract

Soybean bacterial blight is an important disease of the soybean crop. Since resistant cultivars are lacking, the disease is difficult to control, hence early detection and proper diagnosis as well as good knowledge on epiphytotic of the disease are important aspects for successful disease control.A serological technique, particularly the Enzyme-linked Immunosorbent Assay (ELISA) is an effective technique for detection and identification of plant pathogens. The objective of the research was to obtain polyclonal antibodies (PAbs) and use of NCM-ELISA for detection PSG. Soybean plant samples showing symptoms of soybean bacterial blight were collected from the fields and used for antigen sources. Isolation and production of PSG antigen was done using King's B Agar medium. Immunizations of white New Zealand rabbits were done to produce antibodies to PSG. Yield of PAb-PSG was indicated by antisera titers ranging from 160 to 1280. Intravenous immunization produced more titer than that of intramuscularly. NCM-ELISA was used for detection of PSG from plant samples. It was applicable for detection of PSG from plant samples in relatively short time and limit detection of 10" cfu/ml.
POTENSI SERAPAN CO2 PADA BEBERAPA JENIS KANTONG SEMAR (Nepenthes spp.) DATARAN RENDAH Muhammad Mansur
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.v16i1.2269

Abstract

Pitcher plants (Nepenthes spp.) that known as “Carnivorous plants”, has a role in CO2 absorption. However, how much contribution to the CO2 absorption has not been studied. This study was aimed to provide information on CO2 absorption of some Nepenthes species particularly lowland species. This study was conducted at Research Center for Biology-Indonesian Institute of Sciences,  Cibinong Science Center, Cibinong-West Java in June 2014 . A portable LCi ADC Bioscientific Ltd. Photosynthesis System was used to measure the absorption of CO2 directly. Measurement was conducted on 45 individuals of 15 species of Nepenthes with three replications for each species. The results showed that there was a variation of CO2 absorption rate on the lowland Nepenthes species, which was between 3.74 to 12.15 µmol m-2 s-1. The highest CO2 absorption was N. mirabilis (12.15 µmol m-2 s-1), followed by N. gracilis (9.71 µmol m-2s-1) and N. reinwardtiana (9.30 µmol m-2 s-1). While the lowest CO2 absorption occured in N. ampullaria (3.74 µmol m-2 s-1), N. hispida (3.75 µmol m -2 s-1) and N. bicalcarata (4.53 µmol m-2 s-1). Mature leaves of each species were recorded to have a highest CO2 absorption, transpiration and chlorophyll content than those of the young leaves.   
UPAYA MEMPERLUAS KAWASAN EKONOMIS CENDANA DINUSA TENGGARA TIMUR Sundoro Darmokusumo; Alexander Armin Nugroho; Edward Umbu Botu; Alfons Jehamat; Matheos Benggu
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.v5i5.1458

Abstract

Walaupun cendana (Santalum album L.) pada masa lalu merupakan komoditi yang memiliki peran ekonomi bagi PAD (Pendapatan Asli Daerah), namun ironisnya populasi tanaman tersebut di daerah sebaran alaminya (NTT) mengalami penurunan yang cukup signifikan dari tahun ke tahun. Bahkan dilaporkan bahwa komoditi ini sejak tahun anggaran 2000 tidak lagi memberikan sumbangan terhadap PAD. Upaya pemulihan potensi komoditas ini telah dilakukan oleh Dinas Kehutanan Propinsi NTT melalui berbagai kegiatan seperti pembibitan,penanaman, pemeliharaan dan pengamanan, meskipun hasilnya belum menggembirakan. Untuk itu upaya lain yang juga diusahakan adalah dengan memperluas kawasan ekonomis cendana, dengan merubah perlakuan konvensional menjadi intensifikasi dalam budidayanya.

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