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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Published by Universitas Jenderal Soedirman
ISSN : 08531629     EISSN : 08531629     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
Majalah Ilmiah Biologi Biosfera : A Scientific Journal merupakan peer reviewed jurnal yang diterbitkan oleh Fakultas Biologi Universitas Jenderal Soedirman. Media ini mewadahi hasil-hasil penelitian di bidang biologi tropika yang terbit tiga kali setahun (Januari, Mei, September).
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 27, No 1 (2010)" : 7 Documents clear
Rizofiltrasi Logam Pb (Plumbum) pada beberapa Jenis Tumbuhan Air Elly Proklamasiningsih; Hernayanti Hernayanti
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.189

Abstract

The research about rhizofiltration of Pb in several species of aquatic plant had been conducted in a greenhouse of Biology Faculty, Jenderal Soedirman University. The aims of this research were to evaluate the aquatic plant species which has Pb accumulative characteristic and to determine Pb concentration tolerated by those plants. This research was used experimental method with split plot design. The main plot was kind of aquatic plant of Hydrilla verticillata (L.f), Pistia stratiotes L, and Salvinia molesta D.S.Mitchell. The Pb (NO3)2 concentrations of 0, 5, 10, 15 mg/l were as sub plot.   Each treatment was replicated for 3 times. The parameter observed were biomass (raw weight and dry weight), the Pb absorbed whether in root and shoot, and chlorophyll content. Data collected were analyzed using F test continued by LSD. The result of this research showed that both Pistia and Salvinia planted in 10 mg/l media were able to accumulate high Pb concentration. However, Pistia were able to accumulate Pb concentration mostly in root and only part be translocated in shoot. Whereas Salvinia was able to translocate Pb concentration in shoot higher than those in of Pistia.  The implications of these results for rhizofiltration are discussed.
Hubungan Genetika Pria Masyarakat Sembiran dan Tri Wangsa di Bali I Ketut Junitha; Bambang Suryobroto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.185

Abstract

Balinese community has evolved since the prehistoric era. The present community is structured into Hinduism caste (Brahmana, Kesatria, Wesia and Sudra), but remnants of their ancient communities, collectively called Bali Aga, have not undergone this structure. The first three castes of modern Balinese that comprises Tri Wangsa gentry were derived from JavanesekingdomofMajapahit(1343 AD). One of Bali Aga communities is Sembiran of Northern Bali. Using chromosomal microsatellite DNA, allelic variability of Sembiran and Tri Wangsa communities was reported. Both of them had the same high frequency of alleles which suggested genetic intermixing or sharing of common ancestor. However, a few alleles were unique for each community. This uniqueness was related to patrilineal system of Balinese community and to high mutation rate of Y chromosomal microsatellite DNA.
Perubahan Lingkungan Ekosistem Sungai Belawan terhadap Kualitas Air dan Keanekaragaman Makrozoobenthos sebagai Bioindikator Mayang Sari Yeanny
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.190

Abstract

The sampling technique of this research was purposive random sampling with 4 stations. The results showed that there were 23 genera of macrozoobenthic, which were categorized into 3 phyla, 5 classes, 10 orders, 18 families. The highest density population index was shown by Terebralia 92,59  ind./m2 (station IV) and the lowest was by Littorinia, Natica, Telescopium, dan Oleacinar 3,70 ind/m2 (station IV). The diversity index of  macrozoobenthic was low, ranged from 0,86 to 1,85 and the evenness were high except station IV (0,40). Similarity index of stations I and II was 21,05, stations I and was III 42,85. This means that no resemblance was observed between those stations.. Stations II and III 53,33 were resemble. The pollution of diversity macrozoobenthic was mediumness, and station IV was heavyness of pollution. Macrozoobenthic as bioindicators was Planaria, physa, dan Sphaerium. Effected by quality of water such as; pH, DO, and COD
Pengaruh Kerapatan Populasi Tanaman Sela dan Mulsa Plastik terhadap Pertumbuhan dan Produksi Jagung Wahyu Widiyono
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.186

Abstract

Research of plant population density and intercropping of pigeon pie (Cajanus cajan L.) Millsp. and plastic mulching on maize were carried out in field research of R and D Centre for Biology, Indonesian Institute of Sciences, Cibinong from October 2008 to Februari  2009. The aim was to examine the effects of  plant population density and intercropping, as well as mulching to the growth and yield of maize. The resultas showed that population density, intercropping and mulching affected the maize vegetative growth. However, the maize yield was not influenced by population density; but was influenced by intercropping and mulching. Mulching increased maize production, but intercropping by using C. cajan decreased production.
Isolasi, Populasi, dan Karakterisasi Bakteri Rhizobium pada Daerah Perakaran dan Tanah dari Bengkulu, Sumatra Sri Purwaningsih
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.191

Abstract

A study was conducted in order to know the isolation, population and characterization of Rhizobium bacteria on the soil and rhizosphere plant from Bengkulu, Sumatra. The purpose of the study to know the population of Rhizobium bacteria from rhizosphere plant, and the get pure culture.           The sample was taken from 25 sample soil from rhizosphere of plant. Isolation was done in Rhizobium standart medium (YEMA) and the population was done with plate count methods. Incubation in room temperature of 27-280 C, after 7 days.            The results showed that the population of Rhizobium bacteria the range 18-87 X 105 CFU/g soil. The highest population from the rhizosphere of Zea mays plant. Seventy five gave of pure culture.  The growth characteristic the culture pure was observed by using YEMA medium mixed respectively with Brom Thymol Blue and Congo Red as indicators. Seventy five gave of culture pure, nine isolates can be grouped slow growing, while sixty six can be grouped as fast growing.
Penentuan Konduktivitas Listrik dan Frekuensi Karakteristik Sel Ragi dengan Memanfaatkan Proses Dielektroforesis Much Azam; Wahyu Setia Budi; Hermin Pancasakti
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.187

Abstract

Dielectrophorestic (DEP), a phenomenon where small particles such as yeast cells are manipulated by non-uniform electric fields. The net dielectrophoretic force is proportional to the polarisability of the cell and cause this cell moving toward higher field. By measuring velocity of the cell on the various frequency of the electric field, it can determine the electrical conductivity and the characteristic frequency of the yeast cells. The results showed that the conductivity of the yeast cell was (10,0 ± 0,4)10-9 Sm-1  and the characteristic frequency was 60 kHz.
Pengaruh Kombinasi Jenis Bahan Pembawa dan Lama Masa Simpan yang Berbeda terhadap Produksi Pelet Biofungisida Trichoderma harzianum Juni Safitri Muljowati; Purnomowati Purnomowati
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 27, No 1 (2010)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2010.27.1.188

Abstract

This research aimed to know effect of carrier material combination and different storage duration on viability of T. harzianum, also to know the material type and storage duration which yielding highest conidia.  Method used in this research was experimental by using Completely Randomized Design (CRD) with factorial pattern. The first factor was type of carrying material that were white sticky rice meal, mix of 75% white sticky rice meal and 25% mungbean meal, mix of 75% white sticky rice meal and 25% soybean meal, and mix of 75% white sticky rice meal and 25% skim milk that each of such material was inoculated by 108 conidia/ml of T. harzianum with storage duration levels that were 0 weeks, 3 weeks, 6 weeks, and 9 weeks.  Obtained data was analyzed by analysis of variance (F test) with significantly level 95% and 99% and followed by Honestly Significant Difference (HSD).  Result showed that there was interaction between types of carrying material with pellet storage period that showed significant effect on viability of T. harzianum.  Carrying material type of white sticky rice meal with pellet storage period of 9 weeks resulting highest percentage acerrage of conidia seedling (viability) of T. harzianum that was 78,19%.

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