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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 34 Documents
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Search results for , issue "Vol 5, No 2 (2000)" : 34 Documents clear
PENGARUH PEMBERIAN EKSTRAK ALKOHOL AKAR ILALANG {Imperata cylindrica L.) TERHADAP PENURUNAN SUHU TUBUH TIKUS PUTIH JANTAN Chairul Chairul
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.v5i2.1158

Abstract

Antipyretic effect of alcohol extract ofilalang flmperata cylindrica L) root on white rat males had been studied using fever tolerance method.Experimental animals were induced to fever by injecting 0.9 ml/kg BW vaccine kotipa orally.Alcohol extract 5, 10, 30, 50,100 and 150 mg/kg BW was given one hour after injection.The body temperature was measured before injection and every half an hour until the fifth hour after injection.Paracetamol 200 mg/kg BW was used as control.Data were analyzed using ANOVA with the body temperature (T), the time interval (P) and extract doses being given (C) as parameters.The results showed that body temperature increased TC from the basal temperature at the third hour after injection of vaccine.The body temperature did not change significantly at the lower extract doses(5-30 mg/kg BW)(P>0.05),while higher doses (30-150mg/kg BW) linearly lowered the body temperature significantly (P<0.05).The extract dose at 50 mg/kg BW lowered the body temperature similar to paracetamol 200 mg/kg BW.
Impatiens Arriensii (Zoll.) T. Shimizu (BALSAMINACEAE) JENIS ENDEMIK DARIPULAU MADURA Nanda Utami
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.v5i2.1149

Abstract

Impatiens arriensii (Zoll.) T.Shimizu is endemic to Madura island. This species is confined only to certain locations on this island.It is remarkable in having four locular ovary with the fusing together of all four lateral petals.The populations of I.arriensii in Madura island was found to be extinct in 1999, (presumably) due to the habitat disturbance.Detailed description and illustration are provided.
BEBERAPA ASPEK BIOLOGI Telenomus sp. (HYMENOPTERA: SCELIONIDAE) SEBAGAI PARASIT TELUR PENGGEREK KUNING PADI Scirpophaga incertulas (LEPIDOPTERA: PYRALIDAE) Very Gameriawati; Mohammad Amir
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.v5i2.1154

Abstract

Various biological aspects o/Telenomus sp.(Hymenoptera: Scelionidae) an eggs parasite of the rice stem borer Scirpophaga incertulas (Lepidoptera: Pyralidae) was conducted in the Pest Laboratory for Crop Institute, Bogor, Indonesia.The results showed that the parasite is solitary in habit and mainly live in eggs of the rice stem borer.The arfu Telenomus could maintain longer life span (3.4 days) in the cage and produced a large number of progenies (29.4 individuals) when they were given food of 10% honey solution compared to those which were given only water (2.1 days of life span, and 22.4 individual progenies).The parasite life span and the number of progenies were the least (1.8 days of life span, and 18.8 individual progenies) when they were treated without any food.The number of progeny was also the greatest when they were provided with one day old of stem borer eggs (45.87 individuals), while the number of progeny declined when they were provided with 2 days (36.93 individual progenies) and 3 days (24.87 individual progenies) old stem borer eggs respectively. Pairs of day old parasites are able to parasite more host eggs compared to that of successive days old parasites.The sex ratimf 2$ : 2$ produced more progenies compared to that with the sex ratio IS : 2$ and 2$ : lQ.Parthenogenetic reproduction in arfu Telenomus parasite being tested resulted in the male progenies only.
PENGARUH PEMBERIAN EKSTRAK Saccharomyces cerevisiae Hansen TERHADAP KANDUNGAN GOSIPOL PADA KULTUR KALUS Gossypium hirsutum L. Rama Riana Sitinjak; Arbayah H Siregar; Rizkita RE
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.v5i2.1133

Abstract

This study concentrated on the effect of Saccharomyces cerevisiae Hansen extract on gosipol content of Gossypium hirsutum L callus cultures. There were many ways commonly used to obtain high secondary metabolites product by using tissue culture,i.e. elicitation.The objective of this study was to increase the production ofgossypol on G. hirsutum callus cultures using elicitor derived from S. cerevisiae.The callus grew optimally and produced gossypol on Linsmaierand Skoog (LS) medium with the addition of 10 M NAA and 10 M 2,4-D. Callus derived from cotyledon was subcultured five times.Callus was then elicited with elicitor derived from autoclaved S. cerevisiae and concentration of elicitor tested were 0.5, 1.0 and 2.5% (b/v). The harvesting times were 0, 2, 4, dan 6 days after elicitation. The gossypol was analyzed qualitatively and quantitatively by using High Performance Liquid Chromatography (HPLC).Gossypol content was influenced significantly by concentration of elicitor and harvesting time.The maximum ofgossypol content was obtained on the 4 day after elicitation i.e. 469.233 ± 2.332 pg/g dry weight in the elicited callus of G. hirsutum.
KOLEKSINE MATODA DARI SULAWESI E Purwaningsih; S Hartini; A Saim
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.v5i2.1159

Abstract

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PRODUKTIVITAS DUA JENIS JANGKRIK LOKAL Gryillus testaceus Walk. DAN Gryllus mitratus Burn. (Orthoptera: Gryllidae) YANG DIBUDIDAYAKAN P Widyaningrum; Asnath M Fuah; DTH Sihombing
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.v5i2.1150

Abstract

Study on the productivity of two species of local crickets; Gryllus testaceus Walk and Gryllus mitratus Burn which are generally found in the local market have been conducted with the main aim at obtaining information on the capability of those species in producing eggs including the length of production cycles.Three levels of box square density (50 female/box,100 female/box and 150 female/box) and two levels of additional feed (green master and papay leaves) were used as treatments.The results showed that the number of eggs produced by G.mitratus were larger with longer production cycles compared to those of G.testaceus. Species and density has highly significant effects on egg production and feed consumption, whereas,additional feed significantly influencing egg production and feed consumption of the two species.The use of green master as additional feed resulted in a higher egg production than those given papay leaves.
HAPTOTROPISME PADA POLA SERANG PARASIT TALIPUTRI {Cuscuta campestris Yunck.) [Haptotropism on the Attack Patterns of Dodder {Cuscuta campestris Yunck.)] Sunaryo Sunaryo
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.v5i2.1155

Abstract

Field dodder fCuscuta campestris Yunck.)is an obligate parasite plant (holoparasit) with twining stems that coil and fasten to host plants.The qualitative and quantitative studies were tested to 20 twining stems pieces, that infected on host plants (Durantha sp.).The results showed that the twining stems are very sensitive and responsive to the contact of host canopy, but it is not for grasses (Poaceae).A single piece has been found to grow at rate of more than 1 centimetres per day. The ability and speed of reaction of the twining stems by the contact stimulating to their host (haptotropism) were discussed.
PENGGUNAAN MODEL DENGAN PROGRAM CSMP UNTUK MENDUGA POTENSI HASIL PADI BERDASARKAN PENDEKATAN IKLIM, TANAH DAN TANAMAN Woro Estiningtyas
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.v5i2.1134

Abstract

Most of rice yield potential prediction models are focussed on optimization of two factors(i. e. soil and crop factors) than another(climate).It is probably due to significant influence of soil and crop factors thananother in rice production.In fact,the result of yield prediction taking into account soil and climate is not sufficient because climate will became limiting factor.In order to integrate climate with soil and crop factors in rice yield potential prediction,the CSMP(Continuous System Modelling Program) model is used in this research.The results of simulation shows that through climate optimization, actual rice yield production can be increased 1500-2000 kg more than actual production.Yield potential during one year can be optimised.Moreover,CSMP can give suggestion in.the efficient use of natural ressources such as nitrogen, phosphor and potassium.
Enderleinellus kumadai Kaneko 1954 (ANOPLURA: ENDERLEINELLIDAE) PADA BAJING, Callosdurus notatus (RODENTIA: SCIURTOAE) Sri Hartini
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.v5i2.1160

Abstract

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ISOLASI, SELEKSI, DAN KARAKTERISASI MIKROBA PENDEGRADASI ASETONITRIL DARI LIMBAH INDUSTRI Bambang Sunarko; Adityarini Adityarini; Usman Sumo F Tambunan; Nunik Sulistinah
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.v5i2.1151

Abstract

A number of microbes which could grow on acetonitrile were isolated and selected from industrial effluents and were studied to characterise the isolate which has the best degrading capability.Cultures were grown on mineral medium with microelements and acetonitrile was added as sole source of energy, carbon, and nitrogen.Isolate D5, identified as Corynebacteriumsp.,was able to grow on high concentration acetonitrile (up to 5 % v/v) and exhibited the highest specific growth rate (\j).When Corynebacterium D5 grew on 2 % (v/v) acetonitrile,the doubling time was 6 hours 40 minutes,the specific growth rate (p) was 0.1 h and the acetonitrile decreasing rate was 3.99 mM/h.Increasing of acetonitrile concentration would extend the doubling time, decline the maximum growth and specific growth rate (\i), and biomass production of Corynebacterium 05.The products of acetonitrile degradation by Corynebacterium D5 were acetamide, acetic acid, and ammonia.The maximum growth of Corynebacterium D5 showed when /3-aminopropionitrile was used as a substrate.

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