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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
 180   181   182   183   184 
PENGAMATAN INFEKSI JAMUR PATOGEN SERANGGA Metarhizium anisopliae (Metsch. Sorokin) PADA WERENG COKLAT Y Suryadi; Triny S Kadir
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i6.830

Abstract

Observation on infection of fungus entomopathogen Metarhizium anisopliae on insect brown plant hopper was carried out using scanning electron microscope (SEM).The infection of M. anisopliae on insect bodies was shown by conidia sporulation on divergent chain with conidia size of 1.6 x 7.8 urn. Based upon SEM observation, the results revealed that fungus hyphae of M.anisopliae was found on insect body i.e. on cuticle as well as on segment between abdomen, legs and insect facet eyes.In epizootic condition, the cadavers were shown can act as source of fungus dissemination on healthy insect when environment (temperature and humidity) was suitable for primary infection.
KEANEKARAGAMAN JENIS POHON DI KAWASAN CAGAR ALAM DUNGUS IWUL, JASINGA, BOGOR Ruddy Polosakan; Laode Alhamd
BERITA BIOLOGI Vol 16, No 2 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i2.2648

Abstract

Dungus Iwul Nature Reserve is one of the remaining conservation areas in Java and has an unique vegetation. Study on tree biodiversity was carried out in one hectare permanent plot. The results showed that there were 78 species of 35 families and 63 genera with 1219 trees per hectare. The species of Orania sylvicola was very dominating the region, with high distribution (Frequency = 100%) and the total basal area (basal area relative; BA = 50.96%). Species of O. sylvicola (Important Value; IV = 129.48%) highly covered the area, followed by Mischocarpus sundaicus (IV = 19.93%), Diospyros frutescens (IV = 9.67%), Ficus variegata (IV = 9.38%) and Knema laurina (IV = 8.51%). Family with largest number of species was Euphorbiaceae (11 species), followed by Lauraceae (7 species) and 4 species of Fabaceae, Meliaceae and Rubiaceae.
KEBIJAKAN DAN POLA KONSERVASI CENDANA PADA MASA MENDATANG DI PROPINSI NUSA TENGGARA TIMUR Albert H Wawo; BP Naiola; Fauzia Syarif
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.v5i5.1472

Abstract

Cendana (Santalum album L.) adalah tumbuhan yang memiliki potensi ekonomi tinggi karena penggunaannya di berbagai bidang seperti bahan kosraetika, obat-obatan, kayu ukiran dan bahan kerajinan rumah tangga (home industry). Oleh karena potensinya yang tinggi itu maka eksploitasi dari habitat aslinya dilakukan secara terus-menerus tanpa memperhatikan upaya konservasinya, sehingga populasi cendana dalam habitat aslinya telah sampai pada kondisi yang memprihatinkan. Cendana merupakan salah satu komoditi unggulan di propinsi NTT yang mampu memberikan andil sebesar 22,08% untuk pendapatan asli daerah (PAD). Dalam rangka Otonomisasi Daerah sesuai dengan UU Nomor 22 tahun 1999 maka perhatian khusus untuk konservasi dan pengembangan cendana adalah salah satu prioritas yang tidak dapat dielakkan oleh masyarakat dan PEMDA NTT. Model agroforestry cendana merupakan salah satu pola konservasi dan pengembangan cendana di masa mendatang dengan melibatkan masyarakat lokal untuk menanam cendana di ladang atau tegalannya. Dengan menerapkan pola ini dalam periode jangka panjang (lebih dari 20 tahun) ke depan masyarakat secara berangsur-angsur mengurangi tekanan terhadap pengambilan cendana dari habitat aslinya di alammkarena cendana telah dapat dipanen dari ladang dan tegalannya. Tulisan ini akan membahas pula penyebab kegagalan konservasi cendana, dan beberapa pemikiran tentang kebijakan dasar untuk konservasi cendana pada masa mendatang.
IDENTIFIKASI LAHAN BAGI PENGEMBANGAN TANAMAN JAHE (Zingiber offlcinale Rose.) DAN MELINJO (Gnetum gnemon L.) Dedi Soleh Effendi
BERITA BIOLOGI Vol 5, No 2 (2000)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i2.1156

Abstract

Ginger (Zingiber officinale Rose.)and melinjo (Gnetum gnemon L) are potential comodities that have great opportunity to be promoted.Ginger is one of nine spices in international trade (and its market is also available in Indonesia and foreign market),while melinjo is known for long time and has high economic value. One important in promoting both comodities had to be known land potency in which both comodities would be cultivated.Land identification would be base on soil analysis in the laboratory,land ability map and field observation. Evaluation of soil fertility criteria and land suitability based on TOR Classification of land ability from Center Research of Soil and Agroclimate.Evaluation of soil chemical properties include N-toial, P-available, exchangeable potassium, cation exchange capacity, pH, and C-organic content.Evaluation of soil physical properties include soil-texture, drainage, soil effective depth and climate.The aim of this study was to observe real/current and potential land suitability level for ginger and melinjo in Lebak District.The result showed that land potency for promoting ginger and melinjo were 89 ha and 71 - 98 ha respectively.
UJI EFEKTIVITAS ANTIBAKTERI EKSTRAK ETANOL DAN EKSTRAK AIR KELOPAK BUNGA ROSELLA (Hibiscus sabdariffa L.) TERHADAP BAKTERI Streptococcus pneumoniae Oom Komala; Reni Rosyanti; Muztabadihardja Muztabadihardja
BERITA BIOLOGI Vol 12, No 1 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i1.519

Abstract

The in vitro study of antibacterial effectiveness of Rosella (Hibiscus sabdariffa L.) sheath ethanol extract and water extract on Streptococcus pneumoniae was conducted by diffusion and dilution method. Basic solution amounting to 70g/100 ml of the extract was diluted into 10%, 30%, 50% and 70% for diffusion test with positive control ampicillin 10 IU, and 0,1%, 0,25%, 0,5%, 1%, and 2% ethanol extract for dilution test on S. pneumoniae. The results showed that the ethanol extract and water extract could delay of bacterium growth. Agar diffusion test (disk diffusion) was observed by diameter of bar region around the disk. At concentration 70 % among extract ethanol and water extract made bar zone wide the best, the diameter mean was estimated 25.6 mm for ethanol extract, and 24.3 mm for water extract on S. pneumoniae. In dilution test, the result showed Minimum Inhibitory Concentration (MIC) of the extract was 1% on S. pneumoniae. The result of phytochemicals test is known that ethanol extract and water extract of rosella contains of saponin, tanin, and flavonoid.
PENINGKATAN KUALITAS NUTRISI TEPUNG DAUN LAMTORO SEBAGAI PAKAN IKAN DENGAN PENAMBAHAN EKSTRAK ENZIM CAIRAN RUMEN DOMBA Indira Fitriliyani; Enang Harris; Ing Mokoginta; Nahrowi Nahrowi
BERITA BIOLOGI Vol 10, No 2 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i2.1965

Abstract

The aim of this experiment is to evaluate the nutrient quality of leucaena leaf meal (LLM) with addition of sheep rumen fluid enzyme for nile tilapia feed and incubated in vitro either for 2 or 24 hours. This experiment was arranged in a completely randomized design with 6 treatments and 3 replications. Those treatments were enzyme levels of 0, 20, 40, 60, 80, and 100 ml/ kg LLM. Results showed that nutrient quality of LLM with addition of sheep rumen fluid enzyme that incubated for 24 hours had the best result compared to that incubated for 2 hours. This finding significantly affected (PO.05) on the increase of sugar release (76.97%), soluble glucose (21.27%) and soluble protein (37.7%). It is concluded that sheep rumen fluid enzyme has a great potential for improving nutritional quality of leucaena leaf meal of fish feed.
STUDI FITOPLANKTON DI KOLAM KEBUN RAYA BOGOR I NYOMAN K. KABINAWA
BERITA BIOLOGI Vol 3, No 9 (1989)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i9.1299

Abstract

I NYOMAN K. KABINAWA, 1989. Study ophytoplankton in Bogor Botanical Garden Ponds Berita Biologi 3(9): 467 - 469. An investigation was carried out in the Bogor Botanical Garden ponds from February 1983- January 1984 to study the diversity,structure and abundance of phytoplanktons.The samples were collected twice a day: in the morning (07.00) and in the afternoon (12.30),twice a week. Among 85 species of phytoplanton observed, Merismopedia punctata, Oiroococcus indicus, Oscillatoria sp.(Cyanophyceae), Scenedesmus quadricaudata, Chlorococcus sp.(Chlorophyceae), and Melosira granula (Bacillariophyceae) were the most common species.Cyanophyceae is the most common group of phytoplankton with the population of 0.680 - 2.80 million cells/1 followed by Chlorophyceae and Bacillariophyceae with the total population of 0.32 - 0.60 and 0.28 - 0.60 million cells/1 respectively. In contrast, the population of Euglenophyceae was only 13,000 cells/1 and Dinophyceae 0 (nil - 120,000 cells/1.Hydrological conditions of water of the Bogor Botanical Garden ponds were good for aqualitic organisms and may belong to the eutrophy water.
STIMULASI BENIH KETIMUN (Cucumis sativus L.) GUNAMENINGKATKAN PRODUKSIBUAH Rd Prasodjo Soedomo
BERITA BIOLOGI Vol 8, No 3 (2006)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i3.797

Abstract

The cucumber (Cucumis sativus L.) sex epression commonly monoceous and diaceous, however are dominated by male flowers.The percentage of female flower are only under 5% of total flowers per plant. Due to the environmental effects, the female flowers are usually fall down, thus fruitset decreased. The objective of this research is to increase the potential of female flowers to set fruits, thus impacted on fruit yield increase of cucumber by application of methyl blue and soaking seeds. The study was conducted at Kalijati Sub-District (+ 96 m asl), Subang District, West Java Province between May to June 2006 (dry season), in latosol reddish soil. The experiment was designed under a randomized block in factorial model, with twelve combination treatmeants and three replications.The the treatmeants were: A. concentration methyl blue: (Al) control (0 %), (A2) 0,03 %, (A3) 0,06 % and (A4) 0,09 %. B. the length of soaking: (Bl) 12 hours, (B2) 24 hours and (B3) 36 hours. The results shows that the stimulation of cucumber seeds in 0,03%, 0,06% and 0,09% compared to control, increasing the female flowers ability to set fruits up to 62,65%,45,61% and 13,79% respectively; and had impacted to increase yield per plant up to 40,69%, 34,48% and 14,09%. The stimulation of cucumber seeds by 0.03, 0.06 and 0.09% of methyl blue were able to increase the potential of female flowers to set fruits 62,65,45,61 and 13,79 % respectively. Meanwhile it has impacted in increasing fruits yield per plant up to 40,69%, 34,48% and 14,09%. The effect of 0,06% and 0,09% of methyl blue concentration, showed on the decrease of survival plants (28,42% and 37,73 %),seed germination (3 and 5 days) and the initiation of flowering time (1 and 2 days). The longer the seeds are soaked in methyl blue solution, there were tendencies in decreasing the potential of female flowers to set fruits thus fruits yields; also the percentage of plants to develop, longer germination period and decreasing the possibility of female flowers to set fruit.
OPTIMASI PRODUKSI SERTA ANALISIS AKTIVITAS ANTIOKSIDAN DAN ANTIMIKROBA SENYAWA EKSOPOLISAKARIDA DARI JAMUR TIRAM PUTIH (Pleurotus ostreatus) PADA MEDIA CAIR Iwan Saskiawan; Misbahul Munir; Suminar S Achmadi
BERITA BIOLOGI Vol 15, No 2 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i2.2299

Abstract

Pleurotus ostreatus is well known as an oyster mushroom that is very popular because of its high nutritional value and pharmaceutical component. The aim of this research was to study the antioxidant and antibacterial activity of exopolysaccharides from P. ostreatus grown on liquid medium.The P. ostreatus was grown on Mushroom Complete Medium (MCM) containing various types of Carbon (C) and Nitrogen (N) sources, i.e glucose, lactose, amylose and sucrose as a Carbon sources and yeast extract, polypeptone, NH4Cl, and NH4NO3 as a Nitrogen sources. The results showed that sucrose and yeast extract were the best source of Carbon and Nitrogen that produced 208 and 100 mg/L of exopolysaccharides.  The exopolysaccharide exhibited antimicrobial activity against Bacillus subtilis and Escherichiacoli. However, it did not have antimicrobial activity against Saccharomyces cerevisiae.  In addition, the exopolysaccharide indicated to have an antioxidant activity.
RUMPUT2 DIPULAU PEUTJANG (UDJUNG KULON) Soejatmi Soenarko
BERITA BIOLOGI Vol 1, No 3 (1971)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v1i3.1439

Abstract

Penelitian vegetasi dan ekologi P. Peutjang telah dilakukan sedjak tahun 1958 dan beberapa karangan ilmiah telah diterbitkan mengenai ini (Kartawinata,1963; Surianegara, 1969).Dalam karangan2 itu hanja satu djenis rumput sadja jang disebutkan, ialah Ischaemum muticum. Dibawah ini disadjikan tjatatan djenis2 rumput jang tumbuh di P. Peutjang, berdasarkan koleksi jang ada

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