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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
 78   79   80   81   82 
PENAMPILAN KARAKTER KUANTITATIF GENOTIPE KEDELAI DI BAWAH NAUNGAN Sundari, Titik; Wahyuningsih, Sri
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i1.3103

Abstract

ABSTRACTSunlight is main source of energy in photosynthesis process. In any habitat, light intensity varies temporally and spatially. Plants develop the strength of acclimatization and plasticity to overcome these problems. Each plant provides a different response to shade, and expressed through diverse appearance of the characters. This research aims to know the ability of soybean genotypes in the response to shade. Research conducted at Kendalpayak Research Station, Malang in 2013. The research used factorial experimental design, with two factors. The first factor is shade, consisted of without shading (N0) and 50% shading (N1). The second factor is soybean genotypes, consisting of three sensitive varieties to shade (Grobogan, Argopuro, and Panderman), two resistant varieties (Dena1 and Dena 2), and two lines of crossbreeding (IBM-10-75 and K-13). Placement of treatments was based on randomized complete block design, repeated three times. Observations included: plant height, leaves number, leaf area, stem diameter, seed weight per plant, 100-seed weight and dry weight: total, roots, stems, leaves and pods. The results showed that the treatment of 50% shade causes the low light stress, with intensity of 30.31%. That stress intensity, causes differences in the quantitative characters performance among genotypes tested. Dena 1, Dena 2, and K-13 suitable for shade environment, being able to maintain or increase the seed yield, whereas Argopuro, IBM-10-75, Grobogan, and Panderman not suitable for shade environment, because not able to maintain the yields. Dena 1 and Dena 2 developed avoidance mechanisms to respond shade, through increase in plant height, number and leaf area, while K-13 respond to the shade stress, through its ability to utilize absorbed light for seed formation an efficient.Keywords: stress, low light, soybeans
DISTRIBUSI BAKTERI NITRIFIKASI DI DANAU PAPARAN BANJIR STUDI KASUS : DI SUAKA PERIKANAN DANAU LOA KANG, KALIMANTAN TIMUR Badjoeri, Muhammad
JURNAL BIOLOGI INDONESIA Vol 4, No 2 (2006): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v4i2.3267

Abstract

ABSTRACTDistribution of Nitrifying Bacteria in Floodplain Lake. Case Study in Lake LoaKang Fishery Reserve, East Kalimantan. Lake Loa Kang is a fishery reserve locatedin a floodplain system of River Mahakam. This floodplain lakes consists of severalhabitat types among the others are backswamp deposit lakes represented by Lake LoaKang and Lake Balikpapan. This two floodplain lakes exchange water with RiverMahakam and one of its tributary, the River Pela. Nitrification is one key ofmicrobiological process of nitrogen cycle in inland water. The nitrifying bacteria functionalgroup that mediated the process can be detected and identified by enrichment culture.This study was aimed to reveal feature of nitrification process in several floodplainhabitat types of Lake Loa Kang Fishery Reserve (LLFR) system with emphasize on thespatial distribution pattern of nitrifying bacteria. The results ofthe study will be utilizedas limnological database for development of conservation and restoration of Pesut habitat.Water samplings are conducted for three times in 2003, those were in dry season (June),transitional (August) and the rainy (Sept.). Results of the study showed that the numberof nitrifying bacteria is highest at connecting channel between floodplain lakes (L. BalikPapan) and River Mahakam and the lowest in small size ephemeral pond in LLFR (Lopak).Ex situ simulation of this biogeochemical cycle indicate a duration of 13 - 21 days tocomplete the nitrification process. The number of nitritation and nitratation bacteria inLake Loa Kang in the dry season is smaller compared to the number in rainy season. Theduration of nitrification process in LLFR suspected to be influenced by the number ofbacteria, organic material and season.Key words: Distribution,Floodplain, Lake Loa Kang Fishery Reserve, Nitrifying bacteria
KAJIAN PEMILIHAN JENIS TUMBUHAN UNTUK RESTORASI HUTAN BERDASARKAN BEBERAPA PARAMETER FOTOSINTESIS Ahmad, Tinia Leyli Shofia; Setiadi, Dede; Widyatmoko, Didik
JURNAL BIOLOGI INDONESIA Vol 9, No 2 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v9i2.169

Abstract

Forest restoration is a process of ecosystem conditioning (soil, vegetation, and wildlife) in order to achieve similarpatterns and profiles to previous conditions and status before the ecosystem was disturbed, both in terms of speciescomposition and structure, and habitat functions. Restoration is a crucial part to maximize the conservation values ofbiodiversity and ecosystem functions. Eight different native plant species were assessed in this research while the photosyntheticparameters studied included the total chlorophyll content, carbohydrate content, CO2 sequestration capacity,leaf weight, leaf number, leaf area and leaf water content. Spectrophotometer was operated to analyse chlorophyllcontent, the Somogyi-Nelson method was used to calculate carbohydrate content, and leaf area was measuredusing the leaf area meter. The research results using the principal component analysis showed that each type of theplant species used for the restoration (2 years old after planting) had different characteristics in terms of photosyntheticparameters studied. Dacrycarpus imbricatus and Syzygium lineatum both had the highest carbohydrate contentsand the best abilities to absorb CO2. Sloanea sigun, Alstonia scholaris, Manglietia glauca, and Castanopsis argentea hadhigher total chlorophyll contents than others, while Altingia excelsa, M. glauca, A. scholaris, and Schima wallichii hadhigher water contents. A. scholaris, M. glauca, and S. sigun had heavier leaf weights. In contrast, M. glauca possessedthe widest leaves amongst the species observed.Keywords: forest restoration, photosynthetic parameters, native species
PERUBAHAN PERSENTASE UNSUR HARA SERASAH AKIBAT PROSES DEKOMPOSISI PADA EMPAT SPESIES TANAMAN GUGUR DAUN DI KEBUN RAYA PURWODADI Darmayanti, Agung Sri; Rindyastuti, Ridesti
JURNAL BIOLOGI INDONESIA Vol 8, No 1 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v8i1.3065

Abstract

Percentage changes of litter nutrient due to decomposition process of four deciduous plant species in Purwodadi Botanic Garden. The nutrient release pattern of plant litter is different among species. Decomposition and nutrition release of organic material was observed in four species Swietenia macrophylla, Lagerstroemia speciosa, Ficus benjamina and Kigelia Africana in Purwodadi Botanic Garden. Litter mass was measured and chemical compositionwas analized including poliphenol, celulose, lignin, carbon (C), Nitrogen (N), C/N ratio, phospor (P), and Kalium (K) during 3 months. Litterbag method was applied in this research. Freshlitters were brought into bag and placed in the forest floor. Litterbag and litter chemical monitoring was established once a week. The research result showed that C ratio of four species in early phase increase then decrease in late phase of incubation and significantlydifferent from initial phase except in F. benjamina. N ratio decreased in first month and increases until late phase of incubation. C/N ratio increase in early phase then significantly decreasesuntil 3 months incubation. P ratio tends to decrease in first and third month. Ratio of polyphenol and Lignin decreases, however celluloses increase. The litter of four species has low chemical quality, respectively have low C/N ratio (< 25 %), lignin < 15 %, poliphenol < 3 % and (L+Pp)/ N > 8 %. Consequently, the litter tends to immobilize than mineralize. It effected to high ratio ofN such in L. speciosa. Decreasing and releasing of N in K. Africana showed that its nutrient transfer is better than in other species. P ratio quickly decreases in first 4 weeks of decomposition, it showed that P is not a limiting factors in species decomposition, relatively.Keywords : Litter, decomposition, percentage changes, nutrient
ARTI KEBUN RAYA BOGOR BAGI KEHIDUPAN KUMBANG SUNGUT PANJANG (COLEOPTERA, CERAMBICIDAE) Noerdjito, Woro Anggaraitoningsih
JURNAL BIOLOGI INDONESIA Vol 6, No 2 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i2.3166

Abstract

TULISAN PENDEK Arti Kebun Raya Bogor Bagi KehidupanKumbang Sungut Panjang (Coleoptera, Cerambicidae)
KERAGAMAN GENETIK PADA KUKANG (NYCTICEBUS COUCANG) BERDASARKAN PADA GEN 12S RRNA MITOKONDRIA Wirdateti, Wirdateti; Okayama, Toshinao; Kurniati, Hellen
JURNAL BIOLOGI INDONESIA Vol 3, No 2 (2001): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i2.3478

Abstract

ABSTRACTGenetic Diversity of Slow loris (Nycticebus coucang) based on Mitochondrial 12S rRNA gene. The research on genetic diversity of slow loris Nycticebus coucang (kukang) was carried out. The samples are 12 individuals from three locations (Sumedang and Jember in Java, and Lampung in Sumatera). Total DNA was extracted from blood and tissue. The mitochondrial 12S rRNA nucleotide sequences were determined to investigate genetic diversity of this species. This region was amplified by using L1091 and H 1478 primers by PCR. As a result of the analysis for 386 bp nucleotide sequence, five haplotypes were found, two from Java and three from Sumatra, respectively.Key words : Slow lories, Nycticebus coucang, genetic diversity, 12S rRNA mtDNA
FREYCINETIA OF MOUNT NYIUT AND PALUNG, WEST KALIMANTAN BASED ON LEAF ANATOMICAL CHARACTERS Rizki, Fitri Sri; Chikmawati, Tatik; ., Rugayah
JURNAL BIOLOGI INDONESIA Vol 11, No 1 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i1.2165

Abstract

Freycinetia Gaudich. is a climber plant belongs to the family of Pandanaceae. Seven species of Freycinetia from Mount of Nyiut and Palung located in West Kalimantan have been recognized based on leaf anatomy. Paradermal and transversal leaf sections of those species were observed, and the data was used to construct a dendrogram using Jaccard similarity index  and Unweighted Pair Group Method with Arithmetic Average (UPGMA) method. Six main characters have been used to distingush and evaluate the similarity between its, i.e. number of hypodermal layers, number of palisade layers, shape of sponge tissue, layout of sclerenchyma tissue, stomata size,  presence of costal and intercostal cells, and shape of vascular bundle. Cluster analysis based on the anatomical data showed that seven Freycinetia species were clustered into two major groups at similarity coefficient 0.38. The first group consisted of F. angustifolia,   F. imbricata, F. sarawakensis, and F. winkleriana, while the second group consisted of F. corneri, F. sessiliflora and F. sumatrana. Keywords: Anatomical variation, Freycinetia, West Kalimantan 
ERITROSIT DAN HEMOGLOBIN PADA KELELAWAR GUA DI KAWASAN KARST GOMBONG, KEBUMEN,JAWA TENGAH Wijayanti, Fahma; Solihin, Dedy Duryadi; Alikodra, Hadi Sukadi; Maryanto, Ibnu
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i1.3131

Abstract

ABSTRACTErythrocyt and Haemoglobin on Cave Bat at Gombong Karst Area, Kebumen Regency, CentralJawa. The purpose of this study was observe physiological adaptation of the cave batsconducted from September 2009 to March 2010 in twelve caves within the karst of Gombong,Kebumen Regency, Central Java. In each caves where the bats roosting, temperature, alsohumidity, oxygen percentage in the air, and ammonia content were measured. Three individualsamples were caught from every bat roost during the day when the bats were staying in theirroosts. Then the amount of erythrocyte was counted by hemocytometer and hemoglobincontent was measured using Sahli's method. The data were analyzed using RDA and multipleregressions. It was concluded that humidity, temperature, oxygen and ammonia correlatedsignificantly with erythrocyte and hemoglobin content. The amount of erythrocyte increasedby increasing humvel.Keywords: Bat, cave, erythrocyte, haemoglobin.
KEANEKARAGAMAN FAUNA IKAN DI KAWASAN DAS HULU TABALONG, ~ABUPATENT ABALONG, KALIMANTAN SELATAN Tjakrawidjaja, Agus H.
JURNAL BIOLOGI INDONESIA Vol 3, No 4 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i4.3324

Abstract

ABSTRACTFish Fauna Diversity of upper Tabalong basin area, Tabalong District, SouthKalimantan. A survey was done to examine the freshwater fish fauna of the upper Tabalongarea, with emphasis on the PT. AYI production forest area, Tabalong District, SouthKalimantan Province. Field work done 13 - 28 June 2001. Fish were sampled at 26 sites inupper Tabalong, within the Tabalong Kiwa catchment above Panaan, on the Lou tributary ofthe Kumap River, and on the Ayu tributary of the Tabalong Kanan river. Sampling was doneusing a variety of methods including siene net, cast net, and gill net, hook and line, rotenoneand electrical shock 120 volt. A total of 93 fish species were recorded, in 34 genera and 11families. The fish fauna of upper Tabalong is typical of that in rivers systems in Kalimantan,in that is dominated by Cyprinidae family 45 species (48.4%) in 18 genera, 28 species(30.1%) in five genera of which are in the Balitoridae, five species (5.4%) in two genera ofMastacembelidae, four Species (4.3%) in two genera of Bagridae, Sisoridae, Channidae andTetraodontidae each three Species (3.2%) in one genera, two (2.1%) in two genera ofCobitidae, and the end Clariidae, Synbranchidae and Osphronemidae each one species (1.1%)in one genera. Five species of fish are new record of distrbution to Borneo, one species maybe New species (in process).Keywords: Diversity, fish, species, abundance, Tabalong, Kalimantan Selatan
HUTAN MANGROVE DI YENANAS, PULAU BATANTA, KABUPATEN RAJA AMPAT, PROPINSI PAPUA BARAT Suhardjono, Suhardjono
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v10i1.338

Abstract

A reseach on mangrove vegetation has been conducted in Yenanas, Batanta Island, Raja Ampat Distric, PapuaBarat Province. The results showed that the diversity of mangrove in Kalitoko was relatively high. About 78 speciesof mangrove (61 genera and 42 families) has been recorded among them, 27 species were classified as rare speciesbased on IUCN list with status VU and CR. The result of vegetation analysis analysis of six transect which cover8,200 m2 of mangrove forest in this location recorded 10 species of mangrove plants with level density was 834-1,244 individual/ha and its basal area was 35.38-123.53 m2/ha. For the sapling the density was 440-1,714individual/ha and its basal area 1.48-4.93 m2/ha. While the seedling density up to 86,364-222,500 individual/ha.Key word : Mangrove Forest, Yenanas, Batanta Island, Raja Ampat Distric, Papua Barat Province

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