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BERITA BIOLOGI

berita_biologi
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Published by Lembaga Ilmu Pengetahuan Indonesia

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Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Articles 2,125 Documents

68 69 70 71 72

POTENSI SUMBER DAYA HAYATI SEBAGAI PENUNJANG PEMBANGUNAN DAERAH YANG BERKELANJUTAN Sugandhy, Aca
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Konsep perabangunan berkelanjutan (sustainable development) di Indonesia selatna ini belum diimplementasikan sebagaimana mestinya.Pembangunan yang dijalankan selama ini masih menitikberatkan pada aspek ekonomi dan meninggalkan aspek konservasi jauh di belakang. Akibatnya adalah menurunnya kualitas lingkungan hidup yang terjadi di mana-mana, termasuk degradasi lahan, penurunan fiingsi dan produktivitas lahan serta meningkatnya berbagai bentuk bencana alam. Untuk itu kebutuhan manusia dan kegiatannya haras diselaraskan dengan pemeliharaan keanekaragaman hayati. Pendekatan keterpaduan ini dijabarkan dalam pengelolaan bioregional yang mewadahi dan menitikberatkan konservasi keanekaragaman hayati dan peran serta masyarakat dalam memanfaatkan sumberdaya alam.

KAJIAN BIOLOGI EBONI DAN KAJIAN BUDIDAYA EBONI Paembonan, Samuel A; Nurkin, Baharuddin
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

KEKAYAAN BEGONIA TAMAN NASIONAL GUNUNG HALIMUN Wiriadinata, Harry; Girmansyah, Deden; Hoover, Scott; Hunter, James
BERITA BIOLOGI Vol 6, No 1 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Begonias arc unique due to asymmetric leaves, and they have large variation on their coloration and hairiness. The flower is unisexual, male and female flowers are in separate branches.The fruit with or without wings of different size and shape.Those unique characters attract them as ornamental plants, Mts. Halimun National Park has many species of wild Begonias which can be found on the forest floor.They grow in group and have essential role in mountainous forest ecosystem. Exploration for wild Begonia within forest around Cikaniki,Cirnarasa. Koridor Cianten, Gn, Botol, Gn. Bintang Gading, Gn. Sanggabuana will be presented in this paper.

POLA PRODUKSI AJMALISIN DARIKULTUR AGREGAT SEL Catharanthus roseus (L) G Don. DALAM BIOREAKTOR Muspiah, Aida; Esyanti, Rizkita Rahmi; Siregar, Arbayah H; Tritama, Erman
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.v6i3.1212

A research has been conducted to optimize the rate of aeration and initial cell aggregates weight in the production of ajmalicine in Catharanthus roseus cell culture in bioreactor. Catharanthus roseus culture were grown in Zenk medium with the addition of 2.5 x 10"6 M NAA (naphthalene acetic acid) and 10s M BAP (benzyl amino purine). Cell aggregates were subcultured two times before transferring 20 and 30 g/fw of cell aggregates into bioreactor, respectively, and aerated with the rate of 0.2460 L/min and 0,3405 L/min, respectively. The pattern of ajmalicine production in bioreactor were observed every 3 days for 24 days.Qualitative and quantitative analysis were conducted using HPLC connected to Cromatopac CL-7APlus. The results showed that the cell aggregates and medium contain ajmalicine. The highest concentration was obtained in combination of 30 g/fw and 0.3405 L/min aeration compare to 20 g/fw - 0,246 L/min, 20 g/fw- 0,3405 L/min, as well as 30 g/fw - 0,2460 L/min. The highest ajmalicine content in cell aggregates was obtained on the 12"d days (79.23ug/g) whilst in medium was obtained in the 18th days (981.15 ug/L).

FLUKTUASI CURAH HUJAN DAN KOMUNITAS SERANGGA DI HUTAN TROPIS TAMAN NASIONAL GUNUNG HALIMUN*[Fluctuation of rainfall and insect community in a tropical forest, Gunung Halimun National Park] Kahono, Sih; Noerdjito, Woro A
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.v5i6.1082

Study on fluctuation of rainfall and insect community was conducted in a tropical forest, Gunung Halimun National Park. Ten years rainfall data was available to discuss their fluctuations. Rainfall was relatively non-seasonal with high number of almost entire monthly rainfalls.Although fluctuation of rainfall in GHNP did not show clear seasonal trend, however appearance of less rainfall showed from June to September. There were several slight fluctuations in the number of rainfalls from a month to another and some time showed major and minor peaks. Monthly dry months had never reached 0 mm. In ordinary years, only one-month drought occurred in July 1991 (90 mm) and December 2000 (8 mm). Strong drought occurred only during El Nino of 1994 and 1997, which have 3 to 4 dry months. Fluctuation of insect community was studied from March 2000 up to February 2001. Two insect collection methods were applied by setting up light traps and pitfall traps. Total individual of each order of insect counted monthly and to be compared one to another. Changing the number of monthly individual of each order was interpreted to the number of monthly rainfall in order to analyze the relation of changing of the number of rainfall and the individual of each order of the insect collected. Fluctuation of the number of monthly rainfall was synchronous to the number of insect community collected by light traps (night flying insect) but tend to opposite to the number of insect collected by pitfall traps (ground insect).

Tanggapan atas Makalah Frans Seda dan Aca Sugandhy Redaksi, Redaksi
BERITA BIOLOGI Vol 5, No 5 (2001)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

KEANEKARAGAMAN DAN POTENSI FLORA DI GUNUNG HALIMUN DAN SEKITARNYA DI TAMAN NASIONAL GUNUNG HALIMUN Uji, Tahan
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.v6i1.1165

Gunung Halimun National Park is one of the largest remnants of the tropical rain forest left in Java. The forest in this area is an interesting site to be studied due to the richness,diversity and potential of its flora. Through the intensive explorations in Mt. Halimun, Mt. Ci Timur and Mt.Panenjoan, 275 species of plant have been collected.Six species of them are determined as a rare and vulnerable plants, namely Alyxia rcinwardlii, Elaeocarpus grandiflorus, Symplocos odoratissima, Calamus adspersus, C. ciliaris and Korthalsia junghuhnii;and 10 species as "new record", namely Aidia corymbosa, Calophyllum saigonensc, Cryptocarya mentek, llemiscolopia trimera, Litsea elliptica, Sonchlu helerophyllu, Phoebe elliplica, Sarcandra glabru, Sehefflera longifolia and Tetrameri.sla glabra. Based on litterature studied. 151 species out of 275 are potentialplants and the largest group is medicinal plants (60 species).Other data can be gathered as follows 42 species of timber, 19 species of ornamental plants, 16 species of fruits, 10 species of vegetables, 6 species of rattans, 4 species of forages and 4 species of dye and tannin producing plants.

FISIOLOGI PERTUMBUHAN, POTENSI AKTIFITAS PRODUKSI N2O DAN GEN FUNGSIONAL PENYANDINYA PADA BEBERAPA ISOLAT BAKTERI DENITRIFIKASI Agustiyani, Dwi; Laili, Nur; Antonius, Sarjiya
BERITA BIOLOGI Vol 17, No 2 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Physiological characters of four denitrifying bacteria (Bacillus sp. CPNS, Bacillus thuringiensis UPT1, Brevundimonas diminuta EA1 and Bacillus sp. UPSB) were studied based on the growth ability on various nitrate concentrations and the production of N2O gas. The characters of denitrifying bacteria were also evaluated through the existence of functional genes nirS and nosZ, encoding the nitrite reduction and nitrous oxide reduction enzymes which have important role on denitrification processes. The study showed that Bacillus sp. UPSB and Bacillus sp. CPNS isolates have a linear growth with the increasing concentration of KNO3. The N2O gas production of Bacillus sp. UPSB isolate was relatively high, about 70 ?/l, Bacillus sp. CPNS isolate was 25?/l, while the Bacillus thuringiensis UPT1 isolate was 5 ?/l and Brevundimonas diminuta EA1 isolate was 8 ?/l. It was also indicated that both Bacillus sp. UPSB and Bacillus sp. CPNS had high deninitrification activities. It was confirmed that all isolates were contained functional gen of nirS and nosZ.

KERAGAMAN BEBERAPA TUMBUHAN CIPLUKAN (Physalis spp.) DI LERENG GUNUNG KELUD, JAWA TIMUR Hadiyanti, Nugraheni; Supriyadi, Supriyadi; Pardono, Pardono
BERITA BIOLOGI Vol 17, No 2 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Ciplukan (Physalis spp.) is a wild plant which is that potentially used as a medicinal plant. Information related to the diversity of Physalis spp. in Indonesia is limited. The objectives of the research was to identify the diversity of wild Physalis sp. on Mt. Kelud, East Java based on morphological characters, total protein profiles, and flavonoid compounds. The research was conducted by survey on some gradients viz. 200â400, 400â600, 600â800, 800â1,000 and >1,000 m above sea level. Identification of morphological characters was focused on root, stem, leaf, flower and fruit covering 16 characters for scoring. Identification of total protein profile was performed by SDS-PAGE method and the flavonoid compound was analyzed using UV spectrophotometric method based on the colorimetric principle. The degree of diversity of Physalis spp. was determined based on morphological similarity and total protein profiles through cluster analysis. The results showed that Physalis spp. on Kelud was found up to 1,000 m above sea level. Altitude affected to the morphological diversity, total protein profile and the flavonoid compound. Morphological features that play a role in the diversity of Physalis sp. were the direction of growing stems, leaf shape, leaf margin, leaf surface, leaf stalk color, stain color on the inner neck of thr flower, and fruiting calyx color. Expression of total protein P. minima. shows similarity to P. angulata L. Physalis sp. in the low gradient have a higher flavonoid compound as compared to the middle and high gradients. There were two species of Physalis found on the gradient of Mt. Kelud, East Java, namely Physalis minima L. and Physalis angulata L.

PAKET PEMUPUKAN WORTEL PADA TANAH LEMPUNG LIAT BERPASIR DATARAN RENDAH DI PALANGKA RAYA - KALIMANTAN TENGAH Firmansyah, Muhammad Anang; Rahayu, Wiwik; Liana, Twenty
BERITA BIOLOGI Vol 17, No 2 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Carrot (Daucus carota L.) is generally cultivated at uplands areas. However, for lowlands, technology of innovation related to fertilizing can be considered as the solution. This study was aimed to determine the appropriate fertilizer package, the variety of carrot adapted in rainy season, and sandy clay loam of the lowland areas in Palangka Raya, Central Kalimantan. This study was designed by using a split plot exponential design consisting of main plot consisting of carrot varieties: (V1 = Kirana and V2 = Lokal Batu) and sub-plot, consisting of fertilizer packages (P0 = control, P1 = low. P2 = medium, P3 = High). The results showed that variety of Lokal Batu was more adaptive than Kirana for having higher tuber production. 16.95 g/plant (10.12 t/ha) and 16.33 g/plant (9.80 t/ha). The result showed that the highest production of 18.89 g/plant was obtained in a medium fertilizer package as compared to other fertilizer package. There was no significant interaction between carrot varieties and fertilizer packages. The trend showed that the fertilizer packages of P2 produced the highest yield of total weight of tuber production within each carrot variety of 10.36 ton/ha for Kirana and 12.31 ton/ha for Lokal Batu.

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