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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
 157   158   159   160   161 
PENGARUH INTENSITAS PENYINARAN TERHADAP PRODUKSI MALAI, BUNGA DAN BUAH RAMBUTAN (NEPHELIUM LAPPACEUM) ZAMZANI FACHRUROZI
BERITA BIOLOGI Vol 2, No 6 (1981)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v2i6.1404

Abstract

Pengaruh iklim terhadap pertumbuhan dan berbuahnya tanaman tahunan, khususnyabuah-buahan lebih besar da ripa da terhadap tanaman semiisim.Untuk menanam tanaman semusim, orang dapat memilih waktu dan tempat yang iklimnya sesuai dengan persyaratan hidup tanaman yang hanya hidup selama beberapa bulan saja.Tanaman tahunan hams dapat mengatasi segala perubahan suhu, curah hujan, air tanah, teriknya sinar matahari dan sebagainya, yang disebabkan perubahan cuaca yang terjadi sepanjang tahun (Satiadiredja 1969).Diantara faktor-faktor iklim, penyinaran matahari sangat menentukan produksi suatu jenis tanaman. Banyak tanaman pertanian memerlukan intensitas penyinaran matahari yang cukup-banyak.Tetapi banyak juga yang memerlukan intensitas penyinaran rendah, misalnya vanili dan kopi, sehingga pada penanaman tanaman semacam ini perlu adanya tanaman peneduh.
SNAILS COMPOSITION IN THE SOUTHERN PART OF GUNUNG HALIMUN NATIONAL PARK Heryanto Heryanto
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.v5i6.1083

Abstract

Snails inventory in the southern part of Gunung Halimun National Park (GHNP) was conducted in two locations i.e., Ciptarasa and Simaresmi,in July and November 2000.It was found 36 species of snails that belongs to 16 families.It means that snails in the southern part of GHNP differs from that of the central part of the Park. Those snails were discovered in 9 habitat types.
IDENTIFIKASI SECARA CEPAT BAHAN BIOAKTIF PADA TUMNUHAN DI LAPANGAN Chairul Chairul
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.v6i4.3461

Abstract

New drug discovery from natural products (bio-prospecting) is not an easy works and takes time, big budget, human resources etc. some important approaches must be taken in order to get success. A preliminary observation of biologycally active components is impotant approach in order that more selective in collecting research materials in the field. This approach is purposed to pacilitate (make easier) the next step research process later in the laboratory level. Several Methods of preliminary observaton of biologyvcally active components had been carried out in the field, but the general guideline of fast observation had been used e.g. 1). Etno-botany (Etnomedicine and Etnopharmacology), 2). Chemotaxonomy, 3). Organoleptic, 4). Chemical (reagent kit) and 5).Simple bioassay in the field (fish posion test, insecticide). Besides that collecting the herbarium specimen as well as research materials for any scienfitic and laboratory works. This paper described these approaches in order to make useful methods to researchers, who go to the field and they could collect more selective research materials before bring them to laboratory.
UPAYA PELESTARIAN EBONI (Diospyros celebica Bakh.) DIAREAL PTINHUTANIIPOSO SULAWESI TENGAH H Erry Muharam; Pujda Satata
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.v6i2.1505

Abstract

Makalah ini membahas tentang Ebony Centre sebagai sarana pengamatan, analisa dan mengisi kekosongan pengetahuan tentang pertumbuhan eboni dari semai,tingkat bibit, pancang dan pohon dan uji coba pelbagai perlakuan silvikultur.Output yang diharapkan adalah diperolehnya informasi dalam pengembangan jenis eboni termasuk perlakuan yang dibutuhkan dalam upaya mencari metode dan teknik silvikultur yang dapat menunjang pengembangan eboni pada masa yang akan datang.
STUDI ETNOEKOLOGI MASYARAKAT DANI-BALIEM DAN PERUBAHAN LINGKUNGAN DILEMBAH BALIEM, JAYAWIJAYA, IRIAN JAYA Y Purwanto
BERITA BIOLOGI Vol 6, No 5 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i5.1191

Abstract

The objective of the ethnoecology study of the Dani-Baliem society is to know the relationship between Dani-Baliem society and their environment.This study covers the perception and traditional management system of environment by the Dani-Baliem society, and also the impact of their activities to the environment change in Baliem Valley. This study is expected to determine the change of plant diversty, which happened, and to reconstruct this change from pre-historic era to the present time.The methods used in this study based on anthropological, ecological, paleoecological and bibliography study.The result showed the ecosystem change in the Baliem valley since 26.000 BP.It was indicated by Carbon content as a result of fired activities in the base of valley sedimentation.Since 7000 years ago, the impact of human activities in the Baliem valley area is significant. It is indicated by organic material sedimentation.This environment change continue untill now and relate to the intensity of human activities intervention. These human activities cause many enironment units which has physical and biological characteristics. By using floristic analysis in each environment unit, it can be seen the change of plant diversity composition in this area.
UJI PALATABILITAS TEPUNG BUNGKIL KELAPA SAWIT YANG DIHIDROLISIS DENGAN ENZIM RUMEN DAN EFEK TERHADAP RESPON PERTUMBUHAN BENIH IKAN PATIN SIAM (Pangasius hypophthalmus Sauvage) Wahyu Pamungkas
BERITA BIOLOGI Vol 12, No 3 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i3.644

Abstract

The quality of feed is not only determined by the nutrient content and digestibility of the feed or feed ingredients, but also determined by the palatability of the feed. Palatability is one of important factor in the preparation of rations, because palatability affects the amount of feed intake. The purpose of the study was to determine the effect of feed commercial mixed with palm kernel meal (PKM) that was hydrolyzed by sheep rumen liquor enzyme to palatability of feed by measuring total feed consumption and growth responses of seed catfish (Pangasius hypopthalmus Sauvage). The feeds used in the study were commercial feed added hydrolyzed palm kernel meal (PKMe) and unhydrolized palm kernel meal (PKM). The treatments were as follows A). Commercial feed, B). 30% + 70% BKSecommercial feed30% PKMe + 70% commercial feed, C). 40% PKMe + 60% commercial feed, D). 30% PKM + 70% commercial feed, E). 40% PKM+ 60% commercial feed. Ten fishes with wight around 20 g were used in the trial and held in 80 l tanks. A completely randomized experimental design consisted of 1 variable and triplicates were selected. The result of the experiment showed that feed consumption was not significantly different among the treatment. It was showed that the test diet have a good palatability. The result of feed consumption, survival rate and growth responses observation showed that it was not significantly different among the treatments (P>0.05). Result of digestibility analysis showed that diet A and B have digestibility coefficient higher than diet C and D. Based on the evaluation in those parameters it was concluded that palm kernel meal that has been hydrolized by sheep rumen liquor enzyme have a good palatability and can be used as feed for seed catfish (Pangasius hypophthalmus Sauvage) with addition of up to 40% in the feed.
KONDISI OPTIMUM FUSI PROTOPLAS ANTARA JAMUR TIRAM PUTIH {Peurotus floridae) DAN JAMUR TIRAM COKLAT {Pleurotus cystidiosusy Ira N Djajanegara; Korri El-khobar
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.v9i5.1997

Abstract

Genetic crossing of white oyster mushroom to introduce longer storage life trait can only be done within individuals in this particular species. However, longer storage life trait is possessed by brown oyster mushroom (Pleurotus cystidiosus) which is other species within this genus. Thefeore, protoplast fusion between white oyster mushroom (Peurotus floridae) and brown oyster mushroom (Pleurotus cystidiosus) was conducted to hopefully obtain an oyster mushroom strain that has higher production and longer storage life. Protoplast fusion was done by isolating protoplast from 5-days old monokaryotic mycelia grown in PDB. As much as 3.15 x 10 protoplasts/ml were harvested using mixture of cellulase Onozuka R-10 (1%) and macerozyme R-10 (1%) from brown oyster mushroom with 80.61% viability. Similarly, 3.71 x 10 protoplasts/ml were harvested using lysing enzyme (2%)from brown oyster mushroom with 83.68% viability. Protoplast fusion were conducted using 0% (control), 30%, 40% and 50% of PEG6000. Fusion periods were done at 10, 20 and 30 minutes. The candidate fusants were then screened using MRM (minimum regeneration media) media. Based on this experiment, the optimum conditions for protoplast fusion is 10 minutes incubation using 40% PEG6000 that yielded 121 colonies grown on MRM media as candidate fusants.
HIBRID ALAMI ANTARA ARENGA PINNATA DAN A. OBTUSKOLIA DI KEBUN RAYA BOGOR NANDA UTAMI
BERITA BIOLOGI Vol 3, No 6 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i6.1330

Abstract

NANDA UTAMI. 1986, Natural hybrid between A. pinnata and A. Obtusifolia in Bogor Botanical Garden.Berita Biologi 3(6): 297 - 300.The morphology and leaf anatomy of three collections of Arenga of incertain identity and grown in Bogor Botanical Garden are investigated and i compared with other species. The investigation showed that the characters of these collections oscillate between A pinnata and A. obtusifolia. Consequen tly it is suggested that the plants probably represent a natural hybrid of these two species.
PENGETAHUAN TRADISIONAL DAN PEMANFAATAN TUMBUHAN OLEH MASYARAKAT LOKAL PULAU WAWONII SULAWESI TENGGARA Mulyati Rahayu; Rugayah Rugayah
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.v8i6.829

Abstract

Wawonii is one of the small islands located at S.E. Celebes. Plant Diversity and its utilization by the local people have not been recorded yet.Ethnobotanic study has been conducted in several location (Lansilowo, Wawolaa, Lampeapi and Boboloi Districts) visited in 2003-2005, using semi structural interviews and open-ended method. The result of trie study showed that community of this island consist of several ethnics (Bajo, Menui, Muna, Buton, Tolaki. Kolesusu, Jawa and Wawonii).Wawonii is the origin and majority ethnic in this island. About 200 species of plant have been used for their daily need such as for food, utensil, medicine and cosmetic, waving, energy and others.Indigenous knowledge of the local people about the species plant utilization will be discussed.
PATOGENISITAS ISOLAT BAKTERI Xanthomonas oryzae pv. oryzae DAN PEMANTAUAN PENYAKIT HAWAR DAUN BAKTERI PADA PADI GALUR ISOGENIK Yadi Suryadi; Triny Suryani Kadir
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.v16i2.2393

Abstract

Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is an important rice disease due to its high intensity that and  the mereased durability of its resistant variety. This study was aimed  to determine the pathogenicity of Xoo isolates, which obtained from four regions/districts in West Java on three rice near isogenic lines (NILs) containing a single resistance (R) gene; and  to study reaction of rice NILs/ differential genotypes containing mixture of resistant genes to Xoo population under endemic areas. Out of 22 Xoo isolates have been collected and further determined by ELISA assay. Ten Xoo isolates were selected and inoculated to identify their pathogenicity on three NILs i.e., IRBB5 (xa5), IRBB7 (Xa7) and IRBB21 (Xa21). Pathogenicity test showed that most of isolates produced large lesion, and four virulence groups were identified. Phylogenetic analysis suggested that the dominant virulent isolates were widely distributed at several district in West Java. It was shown that 11 NILs exhibited high levels of resistant reaction to the predominant Xoo pathotypes in Cianjur, while 10 lines were susceptible. The single R gene (IRBB7, IRBB21 and Java14) exhibited lower BLB severity. The IRBB50, IRBB51, IRBB52, IRBB53 lines (carrying two R genes), IRBB56, IRBB57 (carrying three R genes); IRBB64 (carrying four R genes), and IRBB66 (carrying five R genes) showed lower severity and thus produced higher resistance to Xoo. This study may implied further work to deploy effective R genes against certain Xoo pathotypes in differ  region.   

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