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Biosaintifika: Journal of Biology & Biology Education
Published by Universitas Negeri Semarang
ISSN : 2085191X     EISSN : 23387610     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Biosaintifika Journal of Biology & Biology Education, an electronic international journal, provides a forum for publishing the original research articles, review articles from contributors, and the novel technology news related to biological research and biological education.
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Articles 20 Documents
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Search results for , issue "Vol 5, No 1 (2013): March 2013" : 20 Documents clear
Optimasi Konsentrasi 2,4-D, Ba, dan Lama Penyinaran untuk Memacu Regenerasi Tunas dari Kalus Kedelai Kristanti, Intan; Habibah, Noor Aini; Herlina, Lina
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.3923

Abstract

Alternatif untuk mengatasi kualitas kedelai yang rendah yaitu perbaikan sifat genetik. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi 2,4-Dichlorophenoxyacetic Acid (2,4-D) dan Benzyl Adenine (BA) serta lama penyinaran dan interaksinya terhadap regenerasi tunas dari kalus kedelai, dan untuk menentukan interaksi faktor-faktor yang paling optimal dalam regenerasi tunas dari kalus kedelai. Konsentrasi 2,4-D dan BA masing-masing terdiri dari 4 taraf (0 ppm; 3 ppm; 6 ppm; 9 ppm) dan 2 taraf lama penyinaran (24 jam dan 0 jam). Analisis menggunakan ANAVA tiga arah dan uji lanjut Duncan. Parameter yang diamati adalah waktu muncul tunas, panjang tunas, jumlah tunas, dan persentase kalus membentuk tunas. Hasil menunjukkan bahwa konsentrasi BA dan lama penyinaran mempengaruhi regenerasi tunas dari kalus kedelai, sedangkan konsentrasi 2,4-D tidak berpengaruh signifikan terhadap regenerasi tunas. Konsentrasi BA yang paling optimal adalah 3 ppm dan lama penyinaran yang optimal adalah kondisi 0 jam. Interaksi konsentrasi BA, 2,4-D dan lama penyinaran berpengaruh terhadap regenerasi tunas terutama pada banyaknya jumlah tunas yang dihasilkan. Perlakuan BA 3 ppm + 2,4-D 6 ppm + 24 jam adalah perlakuan yang optimal dalam meregenerasi tunas dengan jumlah kalus yang banyak. Berdasarkan hasil penelitian disarankan untuk meregenerasi kalus menggunakan ZPT BA dan 2,4-D dan Lama penyinaran.Genetic trait improvement is a way to overcome the low quality soybean. The aim of this research is to determine the effect of 2,4-Dichlorophenoxyacetic Acid (2,4-D) and Benzyl Adenine (BA) concentration and long irradiation and their interaction on bud regeneration from callus soybean, and to determine the interaction of the factors that most optimal in bud regeneration from callus soybean. 2,4-D and BA concentration each consisting of 4 levels (0 ppm; 3 ppm; 6 ppm; 9 ppm) and 2 levels long irradiation (24 hours and 0 hour). Analysis using a three -way ANAVA and Duncan test further. Parameters measured were the time appears bud, bud length, number of buds, and the percentage of callus forming buds. The result showed that BA concentration and long irradiation affects the regeneration of shoots from callus soybean, whereas the concentration of 2,4-D had no significant effect on bud regeneration. The most optimal concentration of BA is 3 ppm and optimal long irradiation is the condition 0 hours. BA concentration, 2,4-D concentration and long irradiation interaction effect on the regeneration of buds mainly on the number of buds produced. Treatment BA 3 ppm + 2,4-D 6 ppm + 24 hours is the optimal treatment in regenerating buds the number of callus that many. Based on the research results suggested to regenerate callus using ZPT BA and 2,4-D and long irradiation.
Ketertarikan Bactrocera carambolae (Diptera: Tephritidae) pada Senyawa Volatil Olahan Limbah Kakao Indriyanti, Dyah Rini; Martono, Edhi; Trisyono, Andi; -, Witjaksono
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2570

Abstract

Tanaman kakao (Theobroma cacao) menghasilkan biji. Biji ditutupi oleh pulp pada saat dipanen, kemudian difermentasi selama tiga hari untuk diambil biji kakao dan dihasilkan limbah cair. Penelitian ini bertujuan untuk menguji ketertarikan lalat buah pada olahan limbah kakao dan mengidentifikasi senyawa kimia volatil yang menarik lalat buah. Penelitian dilakukan di laboratorium, dimulai dari pengolahan limbah kakao, pengujian ketertarikan B. carambolae pada limbah dan mengidentifikasi senyawa volatil olahan limbah kakao. Hasil penelitian menunjukkan bahwa jantan dan betina B. carambolae tertarik pada limbah. Olahan limbah kakao berisi berbagai senyawa volatil yakni: amonia; etil-2-hidroksi propanoat ; 7-dodesenil asetat; senyawa asetamida; 3,5-dihidroksi-2-metil-5,6-dihidropiran; hidroksi metilfurfurol; dan derivat-1-undekuna.The cocoa plants (Theobroma cacao) produce seeds. The seeds are covered by pulp when it is harvested. Then these seeds were fermented for three days to transform them becoming cocoa seeds and the fermentation would produce liquid wastes. The study aims to test the attractiveness of fruit flies to the processed liquid cocoa wastes and to identify the chemical compounds which attract fruit flies. The study was conducted in the laboratory, beginning from the processing of cocoa wastes, the testing of the attractiveness of B. carambolae to wastes and to identify the chemical compounds of the processed cocoa wastes. The result showed that males and females B. carambolae were attracted to the wastes.The processed cocoa wastes contain various chemical compounds, i.e. ammonia; ethyl-2-hydroxy propanoate; 7-dodecenyl acetate; acetamide compounds; 3,5 dihydroxy-2-methyl-5,6-dihydropyrane; hydroxyl methylfurfurol; and 1-undecyne derivates.
Keanekaragaman Jenis Kupu-Kupu Superfamili Papilionoidae di Banyuwindu, Limbangan Kendal Oqtafiana, Ratna; Priyono, Bambang; Rahayuningsih, Margareta
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.3924

Abstract

Kupu-kupu turut memberi andil dalam mempertahankan keseimbangan ekosistem dan memperkaya keanekaragaman hayati. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman jenis kupu-kupu superfamili Papilionoidae di Dukuh Banyuwindu Desa Limbangan Kecamatan Limbangan Kabupaten Kendal khususnya di habitat hutan sekunder, permukiman, Daerah Aliran Sungai (DAS) dan persawahan.Populasi dalam penelitian ini adalah semua jenis kupu-kupu superfamili Papilionoidae yang ada di Banyuwindu, Limbangan Kendal. Sampel penelitian ini adalah jenis kupu-kupu superfamili Papilionoidae yang teramati di Banyuwindu Limbangan Kendal khususnya di habitat hutan sekunder, permukiman, DAS dan persawahan. Penelitian dilakukan dengan metode Indeks Point Abudance (IPA) atau metode titik hitung.Hasil penelitian ditemukan sebanyak 62 jenis kupu-kupu superfamili Papilionoidae yang terdiri dari 737 individu yang tergolong kedalam empat famili yaitu Papilionidae, Pieridae, Lycaenidae dan Nymphalidae. Hasil analisis indeks keanekaragaman jenis berkisar antara 2,74-3,09, indeks kemerataan jenis berkisar antara 0,86-0,87 dan memiliki dominansi berkisar antara 0,07-0,09. Indeks keanekaragaman jenis dan indeks kemerataan jenis tertinggi tercatat pada habitat permukiman yaitu 3,09 dan 0,87 dan memiliki dominansi 0,07 sedangkan terendah tercatat pada habitat persawahan yaitu 2,74 dan 0,86 dan memiliki dominansi 0,07.Butterfly also contribute in maintaining the ecological balance and enrich biodiversity. The aim of this research was to determine the diversity of butterflies superfamily Papilionoidae in Banyuwindu Hamlet Limbangan Sub district Kendal Regency, especially in the secondary forest habitat, settlements, river flow area (RFA) and rice field. The population in this research were all kinds of butterflies Papilionoidae superfamily in Banyuwindu, Limbangan Kendal. The sample was kind of butterfly superfamily Papilionoidae that observed in Banyuwindu Limbangan Kendal especially in secondary forest habitat, settlements, RFA and rice field. This research was conducted using Index point Abundance (IPA) or point count method. The result of this research indicate 62 species of butterflies Papilionoidae superfamily consisting of 737 individuals were classified into four families that Papilionidae, Pieridae, Lycaenidae and Nymphalidae have been found. The results of the analysis of species diversity index ranged from 2.74 to 3.09, evenness index ranged from 0.86 to 0.87 and has a range between 0.07 to 0.09 dominance. Species diversity index and evenness index highest in residential habitats are 3.09 and 0.87 and have dominance 0.07 while the lowest was recorded in rice field habitats are 2.74 and 0.86, and has a 0.07 dominance.
Pengetahuan Tumbuhan Obat Dukun Sakai Desa Sebangar Duri Tiga Belas dan Desa Kesumbo Ampai Duri Kabupaten Bengkalis Irawan, Yulisa Resti; -, Fitmawati; -, Herman
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2571

Abstract

Indonesia memiliki keanekaragaman hayati yang tinggi dengan 13.466 pulau yang termasuk kedalam 33 provinsi dengan berbagai suku dan budaya. Keanekaragaman tumbuhan yang tinggi, berpadu dengan budaya etnik yang ada menghasilkan sistem pengetahuan dan budaya yang terkait dengan pemanfaatan tumbuhan yang ada. Budaya pengobatan dan penggunaan tumbuhan obat sudah berkembang lama dan diwariskan secara turun-temurun. Modernisasi menggerus tradisi dan pengetahuan pengobatan tradisional dan penggunaan tumbuhan obat di Suku Sakai Duri. Penelitian ini bertujuan untuk mendapatkan informasi tentang pengetahuan tumbuhan obat secara tradisional di Suku Sakai. Metode yang digunakan dalam penelitian ini adalah metode deskriptif, wawancara dan survey langsung di lapangan. Hasil penelitian menunjukkan ada 250 jenis tumbuhan obat yang digunakan oleh suku Sakai yang berasal dari Desa Sebangar dan Desa Kesumbo Ampai. Berdasarkan familinya kelompok Zingiberaceae lebih banyak digunakan di Sebagar, sedangkan Famili Annonaceae lebih banyak digunakan di Desa Kesumbo Ampai. Berdasarkan bagian tanaman yang digunakan daun merupakan organ yang paling bayak digunakan di kedua tempat, sedangkan berdasarkan habitus tumbuhan berhabitus pohon lebih umum digunakan di kedua tempat.Indonesia have the high natural resources and biodiversity with 13.466 islands in 33 provinces with various of ethnics and cultures. The high plant diversity combined with the variety of ethnics might result in the diversity of knowledge system of relationship between the society cultures and their plants cultures. The traditional treatment cultures and use the medicinal plants have been evolving for centuries that have been conserved from generation to generation. The presence of culture modernization has caused erosion of traditional knowledge of the society especially in the medicinal plants knowledge of Sakai Duri and Duri 13 ethnics. The aim of this study was to collect the information about the medicinal plant knowledge in Sakai ethnic. This study used descriptive method to collect all informations about the medicinal plant knowledge. The study has found 250 species of medicinal plants used by Sakai ethnic in Sebangsar Village and Kesumbo Ampai Village. Based on the family, the plants from Zingiberaceae family have been used more intensively by the society of Sebangar village, whereas the plants from Annonaceae family have been used more intensively by the people in Kesumbo Ampai village. The organ or part of the plants that is mostly used in both village was leave organ/part. Based on the habitus, the trees are mostly used in both sites and there were 35 tree species used in Sebangsar village compared to 42 species in Kesumbo Ampai village.
Struktur Mikroanatomi Insang Ikan Bandeng di Tambak Wilayah Tapak Kelurahan Tugurejo Kecamatan Tugu Semarang Susanah, Utari Ani; Santosa, Kukuh; Utami, Nur Rahayu
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.3925

Abstract

Berbagai macam kegiatan industri dan teknologi di wilayah Tapak Kelurahan Tugurejo Kecamatan Tugu yang ada saat ini apabila tidak disertai dengan program pengelolaan limbah yang baik akan memungkinkan terjadinya pencemaran air. Ikan sebagai salah satu biota air dapat dijadikan sebagai suatu indikator tingkat pencemaran yang terjadi di dalam perairan. Tujuan penelitian ini adalah untuk mengetahui kondisi air tambak dan kerusakan struktur mikroanatomi insang ikan bandeng yang ada di tambak wilayah Tapak Kelurahan Tugurejo Kecamatan Tugu Semarang. Penelitian dilakukan di tambak wilayah Tapak Kelurahan Tugurejo Kecamatan Tugu Semarang, laboratorium BBTPPI Semarang dan laboratorium kedokteran hewan UGM. Pengambilan data menggunakan purposive random sampling. Analisis data dalam penelitian ini adalah deskriptif kualitatif. Hasil penelitian terhadap faktor lingkungan ikan bandeng masih berada dalam ambang batas yang ditentukan namun hasil pengamatan struktur mikroanatomi insang menunjukkan terdapat kerusakan struktur mikroanatomi berupa edema, hyperplasia, atrofi, fusi lamella, curling dan nekrosis. Hal ini diduga karena zat toksik lain yang ada diperairan namun tidak terukur dalam penelitian. Disimpulkan bahwa pencemaran air tambak di wilayah Tapak Kelurahan Tugurejo Kecamatan Tugu Semarang masih berada pada pencemaran tingkat awal. Pada hasil pengamatan struktur mikroanatomi insang ikan bandeng kerusakan yang terjadi pada jaringan disebabkan lebih karena kerusakan struktur mikroanatominya.A wide variety of industrial and technological activities in Tapak Area Tugurejo Village Tugu District could result in water pollution if they are not accompanied by a good waste management program. Fish as one of aquatic biota can be used as an indicator of the level of pollution in the waters. The aim of this research is to determine the condition of pond water and mikroanatomi structural damage of milkfish gills in Tapak pond. Data retrieved using purposive random sampling. Data analysis is qualitative descriptive. The result of environmental factors milkfish showed that environmental factors milkfish still in the threshold which is determined, but observations mikroanatomi gill structure showed that there are mikroanatomi structural damage in the form of edema, hyperplasia, atrophy, fusion lamella, curling, and necrosis. It is thought to be caused by other toxic substances that exist in waters, but it was not measured in the research. It was concluded that water pollution in Tapak pond still at the initial level of pollution. In observations milkfish gill structure mikroanatomi showed that tissue damage caused by damage structure its self.
Karakter Morfologi dan Pertumbuhan Tiga Jenis Cacing Tanah Lokal Pekanbaru pada Dua Macam Media Pertumbuhan Roslim, Dewi Indriyani; Nastiti, Dini Septya; -, Herman
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2567

Abstract

Limbah organik dari limbah rumah tangga, pertanian, perkebunan, dan peternakan sering menimbulkan masalah, karena mencemari lingkungan. Cacing tanah dapat menggunakan limbah organik tersebut sebagai media pertumbuhannya dan juga merombaknya menjadi pupuk kasting. Penelitian ini bertujuan menganalisis pertumbuhan tiga jenis cacing tanah yang ditemui di kota Pekanbaru pada dua media pertumbuhan. Tiga jenis cacing tanah yang diteliti adalah Amynthas aspergillum (Cacing Gila Bodoh), Perionyx sp1 (Cacing Merah), dan Perionyx sp2 (Cacing Susu). Penelitian ini menggunakan Rancangan Acak Faktorial Lengkap. Masing-masing cacing tanah ditumbuhkan pada dua media, yaitu serasah dan campuran kotoran sapi+tanah, di dalam pot plastik. Medium tanpa cacing tanah digunakan sebagai kontrol. Hasil penelitian menunjukkan cacing tanah Amynthas aspergillum (Cacing Gila Bodoh), Perionyx sp1 (Cacing Merah), dan Perionyx sp2 (Cacing Susu) memiliki perbedaan karakter morfologi pada panjang tubuh, warna kulit, jumlah segmen, tipe prostomium, jumlah seta per segmen, warna dan posisi klitellum, posisi dan jumlah lubang jantan. Medium campuran kotoran sapi+tanah lebih cocok untuk pertumbuhan Perionyx sp2 (Cacing Susu), media serasah untuk pertumbuhan Amynthas aspergillum (Cacing Gila Bodoh), dan media kotoran sapi saja tanpa penambahan tanah untuk Perionyx sp1 (Cacing Merah).Organic waste produced from household, agriculture, plantation, and animal husbandry may cause environmental pollution. Earthworms can utilize this organic waste for their growth medium and decompose them to produce casting fertilizer. The objective of this study was to analyze the growth of three earthworm species from Pekanbaru using two types of media, i.e. Perionyx sp1 (Cacing Merah), Perionyx sp2 (Cacing Susu), and Amynthas aspergillum (Cacing Gila Bodoh). All these earthworms were grown in litter media and manure-soil mixture. Media without the earthworms were used as control. The experiment design used in this study was Full Factorial Random Design. The results showed Amynthas aspergillum (Cacing Gila Bodoh), Perionyx sp1 (Cacing Merah), dan Perionyx sp2 (Cacing Susu) had distinct morphological characters such as the body length, skin colour, segment number, prostomium type, setae number per segment, clitellum colour and position, and also the number and position of male genital hole. The most suitable medium for each Amynthas aspergillum (Cacing Gila Bodoh), Perionyx sp1 (Cacing Merah), and Perionyx sp2 (Cacing Susu) were litter, cow manure, and cow manure+soil mixture media, respectively.
Peranan Tanaman terhadap Pencemaran Udara di Jalan Protokol Kota Semarang Tri Martuti, Nana Kariada
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2572

Abstract

Peningkatan jumlah kendaraan bermotor berpotensi meningkatkan pencemaran udara terutama di jalan-jalan protokol. Untuk mengurangi semakin tingginya bahan pencemar yang dihasilkan kendaraan bermotor, perlu adanya pohon-pohon yang berfungsi sebagai penyerap dan penjerap bahan pencemar dan debu di udara yang dihasilkan kendaraan bermotor. Tujuan penelitain ini adalah mengetahui peranan tanaman di jalan-jalan protokol Kota Semarang dilihat dari kualitas dan kuantitasnya. Data mengenai jenis tanaman peneduh yang ada di jalan protokol Kota Semarang dihitung dengan metode line intercept. Hasil penelitian menunjukkan bahwa kualitas udara di Kota Semarang sudah cukup mengkhawatirkan, hal ini dipandang dari kadar CO yang relatif tinggi. Hasil penelitian terhadap jenis tanaman yang ada di jalan protokol Kota Semarang, dapat diketahui jenis tanaman yang ditanam di 5 jalan protokol Kota Semarang berjumlah 29 jenis. Jenis maupun jumlah tanaman yang ada pada masing-masing stasiun penelitian tidak berpengaruh positif terhadap kadar bahan pencemar udara yang ada. Simpulan dari penelitian ini ialah kualitas maupun kuantitas tanaman yang ada pada jalan-jalan protokol lokasi penelitian tidak berpengaruh positif terhadap kadar bahan pencemar udara yang ada. Hal ini dikarenakan jenis dan jumlah tanaman pada masing-masing jalan protokol tidak sesuai dengan tanaman peneduh yang mempunyai fungsi sebagai penjerap dan penyerap polutan udara.The increasing number of motor vehicles might potentially increase the air pollution in main roads. To reduce the increasing concentration of pollutants generated by motor vehicles, the trees are planted to absorb the pollutants and the dust in the air. The objective of the research was to understand the role of the plants along the main roads in Semarang City, from point of view of quality and quantity. Data on the kind and density of shedding plants along the main roads of Semarang City was collected using line intercept method. Result showed that the air quality of Semarang City has been worrying in terms of the high concentration of CO. There were 29 kinds of trees planted along 5 main roads in Semarang City. The kind and the number of plants in each station did not influence positively to the concentration of the air pollutants. It was concluded that the quality and the quantity of the plants along the study sites did not positively influence the concentration of the air pollutants. It was presumed that the kind and the number of plants along each ain road in Semarang was not appropriately functioning as the absorbants of the air pollutants.
Rambut Sebagai Bioindikator Pencemaran Timbal Pada Penduduk di Kecamatan Semarang Utara Marianti, Aditya; Prasetya, Agung Tri
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2568

Abstract

Timbal (Pb) bersifat toksik, karsinogenik, bioakumulator dan biomagnifikasi. Bioakumulasi Pb dapat terjadi pada kuku, hati dan rambut. Penelitian bertujuan untuk mendeteksi apakah telah terjadi pencemaran timbal pada penduduk di kecamatan Semarang Utara dengan menggunakan rambut sebagai bioindikator. Penelitian deskriptif eksploratif ini menggunakan populasi seluruh penduduk di kecamatan Semarang Utara. Sampel diambil dengan teknik purposive sampling yaitu penduduk laki-laki berumur antara 17 sampai dengan 50 tahun yang tinggal di kelurahan Tanjung Mas dan Bandarharjo Semarang Utara, minimal selama 5 tahun terakhir terus menerus. Kadar timbal pada tubuh dideteksi dari kadar timbal yang terakumulasi pada rambut. Hasil penelitian menunjukkan terdapat kandungan timbal pada rambut 56 sampel. Kadar timbal tertinggi sebesar 17,028 ppm dan rata-rata 8,304 ppm. Penyebabnya diduga bukan berasal dari emisis kendaraan bermotor di jalan raya mengingat profesi sampel sebagian besar adalah nelayan, tetapi kemungkinan berasal dari air minum yang mereka konsumsi. Sampel air minum yang dikonsumsi terdeteksi mengandung timbal rata-rata 6 ppm. Simpulan dari penelitian ini telah terjadi pencemaran timbal pada sebagian penduduk Semarang Utara dengan tingkat ringan sampai sedang. Pencemaran diduga berasal dari air minum yang dikonsumsi.Lead (Pb) are toxic, carcinogenic, bioaccumulator and biomagnification. Pb bioaccumulation may occur in the nail, liver and hair. The research aimed to detect whether lead pollution has affected the people in North Semarang, using hair as bioindicator. The population of this explorative descriptive research was all residents of Sub-District of North Semarang. Samples were taken using purposive sampling technique, i.e. male residents of Tanjung Mas and Bandarharjo aged between 17 and 50 years, who have stayed in the sites for at least 5 years without interruption. The lead level in their body was detected from their hair strand using AAS (Atomic Absorption Spectrophotometery). Research showed that lead substance was detected in hair strands from 56 people. The highest level was 17.028 ppm and the average level was 8,304 ppm. It was suggested that the lead pollutant was not from motor vehicles emisions on the roads cause most samples were fishermen, instead it was suspected that the drinking water was the source of the lead. It was supported by the fact that the drinking water consumed daily by the residents has been contaminated by lead at the level of 6 ppm. Conclusion the lead pollution has affected some residents of North Semarang, ranging from low level to medium level. Presumably, the pollution was originated from the consumed drinking water.
Identifikasi Rhizoctonia Mikoriza Pada Anggrekan Dan Kelompok Anastomosisnya -, Haryuni
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2573

Abstract

Penelitian ini dilakukan di Laboratorium Klinik Fakultas Pertanian Universitas Gadjah Mada Yogyakarta dan Pusat Penelitian di Laboratorium Biologi Fakultas Pertanian Universitas Gifu di Jepang.Tujuan penelitian ini untuk mengidentifikasi dan melakukan anastomosis isolat jamur Rhizoctonia mikoriza (TMG-2, SR-9 dan SR-8). Tester yang digunakan yaitu AG-F SIR.9, AG-F Fko.2.28, and AG-F PS.17. Hasil penelitian menunjukkan bahwa Identifikasi SR-8 memiliki ciri pada Rhizoctonia binukleat (BNR) dan dikelompokkan kedalam AG-F (teleomorf: Ceratobasidium sp.)The experiment was carried out at the Laboratory of Clinical Plant Pathology, Faculty of Agriculture, Gadjah Mada University in Yogyakarta and the Research Center at the Laboratory of Agriculture Biology, Gifu University in Japan. The objectives of the experiment were to identify and to test anastomosis group of orchid mycorrhizal Rhizoctonia TMG-2, SR-9, and SR-8 isolates. The tester of Rhizoctonia to be used were AG-F SIR.9, AG-F Fko.2.28, and AG-F PS.17. Results of the study showed that SR-8 belongs to binucleate Rhizoctonia (BNR) and grouped into AG F (teleomorph: Ceratobasidium sp).
Analisis Keanekaragaman Sagu (Metroxylon sagu Rottb.) pada Tiga Tipe Habitat di Pulau Padang Kepulauan Meranti Rahayu, Yeni; -, Fitmawati; -, Herman
Biosaintifika: Journal of Biology & Biology Education Vol 5, No 1 (2013): March 2013
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v5i1.2569

Abstract

Pulau Padang memiliki areal penanaman sagu (Metroxylon sagu Rottb.). Menurut pengetahuan masyarakat lokal terdapat tiga tipe habitat kebun sagu di Pulau Padang, yaitu Gambut, Kilang Manis, dan habitat bertanah liat. Produktifitas sagu berkorelasi dengan ketiga tipe habitat tersebut. Tujuan penelitian ini adalah mengungkap keanekaragaman sagu pada tiga tipe habitat di Pulau Padang dan menentukan tipe habitat yang mendukung produktifitas sagu yang tinggi, sebagai informasi dasar bagi upaya konservasi habitat sagu. Sebanyak 19 individu sagu telah dikoleksi dari tiga tipe habitat dan diamati karakter morfologi dan agronominya. Hasil karakterisasi ditemukan tiga tipe variasi sagu yaitu sagu duri, sagu sengke, dan sagu bemban. Analisis kluster menunjukan bahwa tanaman sagu mengelompok pada tiga kelompok utama berdasarkan asal habitat dan keberadaan durinya pada tingkat kesamaan 31-88%. Berdasarkan analisis komponen utama membagi tanaman sagu menjadi 5 kelompok, cenderung mengelompok juga berdasarkan asal habitat dan keberadaan duri dengan nilai akumulasi keragaman dua komponen utama 58%. Tipe habitat kilang manis direkomendasikan sebagai habitat sagu yang perlu dikonservasi di pulau Padang.Padang Island has a large sago plantation areas. Indigeneous people recognize three habitat types of sago in Padang island, i.e. peat, kilang manis and clay soil. The productivity of sago is closely correlated to the habitat types. The aims of this research were to reveal the diversity of Sago palms in three habitat types in Padang Island and to determine the habitat types which support high productivity of sago as the information base for conservation of sago habitats. The nineteen sago individuals were collected from three habitats and their morphological and agronomic characters were observed. The result of sago characterization obtained three variations of sago in Padang Island, namely Duri, Sengke and Bemban. The cluster analysis showed that sago dendrograms, which was grouped into three main groups based on similarities of origin and the presence of spines with 31-88% similarity coefficient. The principal component analysis classified the diversity of sago into five groups with 58% accumulated value of diversity. Furthermore, Kilang manis, which in recent study is known as a part of Peat habitat, needs to be conserved for sago plantation area.

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