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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
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IDENTIFIKASI 26 ISOLAT BAKTERI ENDOFITIK DAN FILOSFER PADI DENGAN ANALISIS SEKUEN16S RDNA Nurul Hidayatun; Dwi N Susilowati; K Mulya K Mulya
BERITA BIOLOGI Vol 10, No 4 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i4.763

Abstract

The research was subjected to identify 26 endophytic and phyllosphere bacteria isolated from 4 rice varieties using sequencing method of 16S rDNA.The sequences were then aligned with reference sequence from Gen-Bank data library by BLAST program from NCBI to find the most related identity of the isolates analysed.The sequencing analysis revealed that some isolates have a high identity to Staphylococcus and Serratia (5 isolates each), Bacillus (4 isolates), Microbacteria (3 isolates), Pseudomonas (2isolates) and Klebsiella, Acidovorak, Bulkholderiaceae, Agrobacterium and Shewanella (1 isolate each). No specific isolate dominated in both endophytic and phyllosphere group, nor host-specific isolate found in the four rice varieties.
PERBANYAKAN ULIN (Eusideroxylon zwageri T.et.B) DENGAN BUI DAN SETEK Ning Wikan Utami; Djadja Siti Hazar Hoesen; Witjaksono Witjaksono; Danu Danu
BERITA BIOLOGI Vol 7, No 4 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i4.2064

Abstract

The ulin or so called vernacular name kayu besi (Eusideroxylon zwageri T.et.B.) is one of the the important timber in East Kalimantan (East Borneo).However, there are some problems in the regeneration of this species. The research on propagation of ulin was carried out in Treub Laboratory, Research Center for Biology. The research consist of two experiments The research consisted of two experiments.The first experiment seeds which was treated in order to stimulate the germination and the second experiment by treating the mixture between 1BA and vitamin C for stimulating root cutting.The best result of seeds germination was recorded 90%,which the seeds were treated by removing the whole seedcoat and then by exposing to the sunlight for 5 hours The seed itself began to germinate 7 weeks after sowing.Meanwhile, the control no germination et all until 28 weeks.The best result on cutting was indicated by treating with the combination of IBA 10 mg/1 and vitamin C 50 mg/1 which was achieved the highest rooting 100%,although without hormone treatment only resulted 33.3% rooting.
MORFOLOGI SISTEM PENCERNAAN BEBERAPA JENIS COLEOPTERA PEROMBAK KAYU LAPUK W.A. NOERDJITO; S. ADISOEMARTO; Y. RAHAYUNINGSIH
BERITA BIOLOGI Vol 2, No 4 (1979)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v2i4.1394

Abstract

Pada dasarnya tipe mulut serangga dibagi menjadi 2 golongan besar yaitu tipe pengunyah dan tipe pengisap (Boiror & De Long 1954).Mulut bertipe pengunyah ditandai dengan mandibula kuat yang dapat digerakkan ke samping. Mulut bertipe pengisap telah mengalami variasi dan modifikasi sehingga berbentuk pipa pengisap.Salah satu kelompok besar serangga yang sangat beranekaragam ialah kumbang atau Coleoptera.Walaupun beranekaragam, semua Coleoptera mempunyai bagian mulut yang berfungsi sebagai pengunyah.Berdasarkan perbedaan makanannya, bentuk terperinci bagian-bagian mulut dan saluran pencernaan pemakan tumbuhan berbeda dari pemakan binatang.Perincian perbedaan pada Coleoptera masih belum banyak diungkapkan.Untuk menambah data umum yang telah diperoleh (Snodgrass1935,' Borror & De Long 1954, Imms 1957,Metcalf & Flint 1962),dilakukan pengamatan morfologi terhadap beberapa jenis Coleoptera pemakan kayu lapuk.
SPECIES DIVERSITY OF TRICHOSANTHES IN GUNUNG HALIMUN NATIONAL PARK RUGAYAH RUGAYAH
BERITA BIOLOGI Vol 5, No 6 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v5i6.1073

Abstract

Inventory Trichosanthes L. in Gunung Halimun Nasional Park have been conducted. Seven species recorded occuring in TN Gn.Halimun namely, T. montana, T. ovigera, T. pubera, T. quinquangulata, T. tricuspidata, T. villosa, and T. wawrae.These species are found mostly in humid area in edge forest, or along river sides. Trichosanthes wawrae was found in Cikaniki,whereas the other six species found in Corridor Cianten. Trichosanthes quinquangulata has widelydistributed, it has found in Cibanteng and Leuwijamang as well. Exploration is still continuing to study the distribution of this genus in Gn. Halimun, to recollect the rare species and to do phylogenetic analysis.
KEANEKARAGAMAN PALEM DI PULAU MENDANAU, BELITUNG Deri Andayani; Eddy Nurtjahya; Himmah Rustiami
BERITA BIOLOGI Vol 17, No 3 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v17i3.3413

Abstract

The study of palm in the Mendanau Island, Belitung was conducted in March 2017. There were 11 palm genera consisting of 14 species: Areca catechu, Calamus densiflorus, C. erinaceus, C. scipionum, Calamus sp., Caryota mitis, Daemonorops melanochaetes, Eleiodoxa conferta, Metroxylon sagu, Oncosperma tigillarium, Orania sylvicola, Pinanga malaiana, Plectocomia elongata, and Plectocomiopsis geminiflora. Based on the study of specimens deposited at Herbarium Bogoriense (BO), there were only four species recorded from Belitung Island, namely: Calamus erinaceus, C. scipionum, Eleiodoxa conferta, and Plectocomiopsis geminiflora. One species Calamus densiflorus is a new specimen collection for BO.
PEMANFAATAN LIMBAH BUDIDAYA IKAN LELE (Clarias batrachus) UNTUK IKAN NILA (Oreochromis niloticus) DENGAN SISTEM RESIRKULASI Lies Setijaningsih; L.H. Suryaningrum
BERITA BIOLOGI Vol 14, No 3 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i3.1836

Abstract

 The effluent generated from aquaculture can be exploited through the application of aquaponics technology. The aim of this research was to evaluate the utilization of catfish culture waste by tilapia based on closed recirculation. Catfish and tilapia were used as fish test while water spinach was used as a biofiltration. Dissolved of nitrogen and phosphorus that obtained from catfish culture would be utilized by water spinach. Completedly Randomize Design with consisted of three treatments and three replicates were performed. The different stocked density on catfish culture were used as a treatment i.e. 500 individuals per pond (P1); 1000 individuals per pond (P2); and 1500 individuals per pond (P3). Different stocking density was also applied to tilapia culture as a treatment namely 50 individuals per m2 (Q1); 100 individuals per m2 (Q2); and 150 individuals per m2 (Q3). Result showed that catfish culture with stocking density of 1500 individuals per pond (P3) was better than (P1) and (P2) in terms of absolute weight growth, specific growth rate, and survival (P<0.05). Absolute weight growth, specific growth rate, and survival of tilapia cultured at Q2 (stocking density of 100 individuals per m2) and Q3 (stocking density of 150 per m2) were better than Q1 (stocking density of 50 individuals per m2) (P<0.05).
PENGARUH UREA DAN AZOLLA SEBAGAI TANAMAN PENUTUP PADA BUDIDAYA PADI SAWAH TANAH BERKAPUR DI SEKITAR KUPANG, TIMOR, NTT Tamad Tamad
BERITA BIOLOGI Vol 6, No 3 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i3.1226

Abstract

The ammonia volatilization from lime soil is a very important factor of N-urea losses. Ammonia volatilization from lime soil is very high due to high buffering capacity and basalt pH of the soil. However, urea is commonly used by farmeru as N-source fertilizer on paddy field. One alternitive is Azolla as cover crop can be used to reduce ammonia volatilization from urea. Azolla as cover crop significantly reduced the pH of flodded water, increased tillers and yield up to 66%. Highest tillers production and yield occurred in the treatment of 250 kgs/ha urea, with yield 5.73 tons/ha of paddy seeds.
ANALISIS KERAGAMAN GENETIK KENTANG HITAM Kusumadewi Sri Yulita; Fajarudin Ahmad; Diyah Martanti; Yuyu S. Poerba; Herlina Herlina
BERITA BIOLOGI Vol 13, No 2 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i2.686

Abstract

Kentang hitam [Plectranthus rotundifolius (Poiret) Sprengel] of family Lamiaceae is a minor root crop known only for people living in some parts of Java, Bali and Madura. It was rarely found in its natural habitat, thus it was assumed to have low level of genetic diversity. This present study aimed to assess genetic diversity of 63 accessions of kentang hitam from provenances of Java based on Inter Simple Sequence Repeats (ISSR) and Random Amplified Polymorphic DNA (RAPD) fingerprints. Ten primers of ISSR and RAPD were initially screened and eight were selected for the analysis. These eight primers (OPA13, OPB10, OPB13, OPD8, OPN14, UBC 807, 834 and 835) generated 61 bands with an average of 7.63 polymorphic fragment per primer. Percentage of polymorphism ranged from 8.20% (UBC 807 and 834) to 16.39% (OPB 10) with an average of 12.50%polymorphism.Clustering analysis was performed based on ISSR and RAPD profiles using the neighbour joining method and Principle Coordinate Analysis (PCO). The range of genetic similarity among accessions was 51-100% to which most of the accessions were clustered with more than 80% similarity. This confirmed our hypothesis of the low level of variation existed among accessions.
KEANEKARAGAMAN JENIS BEGONIA (Begoniaceae) LIAR DI JAWA BARAT Deden Girmansyah
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i2.2028

Abstract

A taxonomic study of the wild genera of Begonia Blume {Begoniaceae) in West Java was conducted based on morphological characters. Nine known species (Begonia areolata Miq., Begonia isoptera Dryander, Begonia lepida Blume, B. longifolia Blume, B. multangula Blume, B. muricata Blume, B. repanda Blume, B. robusta Blume and B. tenuifolia Dryander) and one new species Begonia sp. was discovered. An identification key and information about potential uses of West Java's Begonia are described. Beside as ornamental plants, Begonia can be used for medicinal plant such as B. isoptera for spleen diseases.
SERANGGA-SERANGGA BERKEMAMPUAN MERUSAK PADA TANAMAN PEKARANGAN DI TELUKNAGA, CITEUREUP DAN PACET A.H. ATMOWIDJOJO; S. ADISOEMARTO; M. AMIR
BERITA BIOLOGI Vol 3, No 2 (1985)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i2.1362

Abstract

ANITA H. ATMOWIDJOJO, S. ADISOEMARTO & M. AMIR. 1985. Potential insect pests on vegetations of home gardens in Teluknaga, Citeureup and Pacet. Berita Biologi 3 (2) : 55 - 65. A total of 60 species of insects were recorded associated with 78 species of plants in three research localities. However, not all of these species were distributed equally, either in space or time. Many were found specific on certain host plants for the localities. On the other hand, there were host plants that harboured specific insect pests. It was also found that the seriousness of damage was not related to the specificity (in either way). A serious pest on certain host was not necessarily a serious pest on other host plants.

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