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Jurnal Biologi Universitas Andalas
Published by Universitas Andalas
ISSN : -     EISSN : 23032162     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 11 Documents
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Search results for , issue "Vol 2, No 4 (2013)" : 11 Documents clear
Tumbuhan Ficus L. (Moraceae) di hutan konservasi Prof. Soemitro Djojohadikusumo, PT. Tidar Kerinci Agung (TKA), Sumatera Barat - Nur'aini; - Syamsuardi; Ardinis Arbain
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The floristic study of Ficus L. at conservation forest Prof. Soemitro Djojohadikusumo PT. Tidar Kerinci Agung (TKA) West Sumatera have been carried out from September 2012 to January 2013. Samples were directly collected during surveys along the tracks at the study area between 300 and 543 meter above sea levels. The samples were processed and identified at Herbarium ANDA, Biology Department. Twenty spesies of Ficus were identified. Each species could be distinguished by some specific morphological characters such as stipula, leaf frorm, waxy glands, and fruit type. We prepared description for each species and determination key of species level. Keywords: Ficus, forest conservation, floristic study, morfologycal character, palm oil planation and Species.
Pengaruh Lama Pelapukan Media Limbah Industri Teh Terhadap Pertumbuhan Miselium Produksi Jamur Kuping Hitam (Auricularia polytrica (Mont.) Sacc.) Mitra Angelia; - Periadnadi; - Nurmiati
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The study about effect of media composting duration from industrial waste of tea production to the mycelium growth and production of black ear mushroom (Auricularia polytrica (Mont.) Sacc.) was conducted from December 2012 to February 2013 in the Laboratory of Microbiology, Department of Biology, Andalas University, Padang. This study aimed to determine the effects of media composting duration to the mycelium growth and production of black ear mushrooms. The research was designed by using completely randomized design (CRD) in five treatments of Composting duration, they were 0, 1, 3, 5 and 7 days in 5 replications. The result showed that the treatment of 5 days media composting was the optimum length of time for 32 days the growth of mycellium, the weight of fruiting bodies was 50.89 g, the widest diameter of the cap of fruiting body was 9.05 cm, the cellulase activity of the mycellium in the baglogs was 4,769 units/g and producing the highest content of glucose after composting was 153.526 µg/g. Keywords: composting duration, waste of tea, Auricularia polytrica, mycelium growth.
Analisis Vegetasi Gulma Pada Tanaman Buah Naga Merah (Hylocereus polyrhizus, L.) di Kecamatan Batang Anai, Kabupaten Padang Pariaman, Sumatera Barat Elsa Olivia Perdana; Zuhri Syam
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

Analysis of weed vegetation on red dragon fruit plants Hylocereus polyrhizus, L.on sandy soils and not gritty in the District Batang Anai, Padang Pariaman has conducted from March-April 2013 by using the of random squares method with the number 12 plot size1x1 m at each location. The results showed on sandy soils have been found 11 families, 20 genera, 21 species, and 822 individuals. Amaranthus lividus SDR has the highest value (25.80%), and the lowest value of SDR Galinsoga parviflora (0.90%), is the diversity index H'= 2.16 (moderate). While the sandy soil found in 6 families, 12 genera, 15 species and 1070 individuals. Eleusine indica the highest value of SDR (14.1%), and the lowest value of SDR Ageratum conyzoides, diversity index H'= 2.25 (moderate). Index of similarity of 38.88% (significantly different). Keywords: Weeds, Hylocereus polyrhizus. L, composition, structure
Deskripsi Gejala dan Tingkat Serangan Penyakit Bercak pada Batang Tanaman Buah Naga Merah (Hylocereus polyrhizus, L.) di Padang Pariaman, Sumatera Barat Yuni Syafnidarti; Nasril Nasir; - Jumjunidang
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

Study of symptom and disease severity of stem spotting disease on red dragon fruit (Hylocereus polyrhizus, L.) was conducted from December 2012 to February 2013 in Padang Pariaman, West Sumatera. Laboratory and screen house work were carried out at Solok Tropical Fruit Research Institute and microbiology laboratory of Biology Department at Faculty of Mathematics and Natural Science, Andalas University, Padang. This study used direct observation method and the data was analyzed descriptively. Objectives of the research were to characterize and identify the causes of stem spotting disease symptom and then to measure disease incidence in production centers of dragon fruit in Padang Pariaman, West Sumatra. The result showed that percentage of stem spotting disease of dragon fruit was 99,5% while disease severity index of it was 2,2 (moderate severity). Disease symptoms were spotting/patches of brown to black round surrounded by yellow halo. The pathogen was identified as Colletotrichum gloeosporoides. Keywords: Dragon fruit, stem spotting, identification
Multiplikasi Tunas Tetrastigma rafflesiae Miq. pada Media Tanam Murashige-Skoog dengan Penambahan 6-Benzylaminopurine dan 1-Naphtaleneacetic Acid secara In Vitro Ridha Permata Sari; - Suwirmen; M. Idris
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The study about in vitro shoot multiplication of Tetrastigma rafflesiae miq. on murashige-skoog media with addition of 6-Benzylaminopurine and 1-Naphtaleneacetic Acid had purpose to determine physiological responses of Tetrastigma rafflesiae nodes with addition of 6-Benzylaminopurine (BAP) and 1-Naphtaleneacetic Acid (NAA) in several concentrations on shoot multiplication stages. This experiment used randomised complete design in 11 treatments and three replications. The treatment were the addition of BAP (1.0-5.0 mg/l) and its combination with NAA (0.1 mg/l) on MS medium. The results showed that nodus successfully producing shoot and callus. The addition of BAP was more effective than its combination with NAA in shoot multiplication. MS medium with addition of 2.0-4.0 mg / l BAP showed a better media for shoot multiplication (2.3-2.7 shoot each explant). Generally, MS media with combination of BAP and NAA produced a higher shoot although it did not significantly differed with BAP treatments. The result indicated that addition of BAP in in vitro medias have a high possibility of success for shoot multiplications in Rafflesia’s host plant conservation. Keywords: 1-Naphtaleneacetic Acid, 6-Benzylaminopurine, Murashige-Skoog media, Shoot multiplication.
Pengaruh Inokulasi Gabungan Beberapa Vegetative Compatibility Group Isolat Fusarium oxysporum f.sp.cubense Pada Pisang Ambon hijau Sherli Trinitia; Nasril Nasir; - Jumjunidang; Catur Hermanto; - Riska
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The aim of this study was to determine level of virulency of several Vegetative Compatibility Group (VCG) of Fusarium oxysporum f. sp. cubense (Foc) isolates against cv Ambon hijau. The study was conducted at the laboratory of plant diseases and screen house of Solok Tropical Fruit Research Institute from August 2012 to February 2013.The experiment was arranged in randomized block design with seven treatments and four replications, each treatment consisted of fiveplants. The treatments were the mixture of isolates FocVCG 01213/16, 0121, and 0124/5 andthe single. The results revealed that several VCG isolates of Foc grouped in race 1 and 4 inoculated in single or mixture caused the highest disease incidence with the percentage of wilt was 100%. The fastest incubation period of disease on cv Ambon hijau caused by isolate VCG 01213/16 (5.95days), followed by VCG (11.35 to 12 days), single isolate of VCG 0121 (13.15 days) and VCG 0124/5 (17.45 days). Keywords :banana, Fusarium oxysporum f. sp. cubense, Vegetative Compatibility Group, inoculation
Analisis Morfologi Granula Pati dan Kristal Pada Beberapa Jenis Talas Ema Susiana; Tesri Maideliza; - Mansyurdin
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The study of comparative characters of starch grain and crystal morphologically had been done among five species of taro from January until April 2013 in Plant Structure and Development Laboratory, Department of Biology, Faculty of Mathematics and Natural Science, Andalas University. The corm of taro species were analyzed the character of shape and size by using fresh preparate. The result showed that X. sagittifolium and X. violaceum have circular starch grain, while C. esculenta cv. 1, C. esculenta cv. 2, C. esculenta cv. 3 have ellip starch grain. The shape of calcium oxalate crystals found is a bundle of raphide, individual raphide and druse. The all species of taro have individual raphide. C. esculenta cv. 1 and C. esculenta cv. 3 have raphides and druse crystal. Keywords : taro, starch, crystals, Xanthosoma, Colocasia
Pengaruh Pengaturan Keasaman Limbah Industri Teh Terhadap Pertumbuhan Miselium Jamur Tiram Cokelat (Pleurotus cystidiosus O.K. Miller) Dalli Yullio Saputra; - Nurmiati; - Periadnadi
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

The study about the effect of acidity adjusting of industrial waste of tea production on the mycelium growth of brown oyster mushroom (Pleurotus cystidiosus O.K. Miller) was conducted from January to April 2013 in the Laboratory of Microbiology, Department of Biology, Faculty of Mathematics and Natural Sciences, Andalas University, Padang. The aim of this study is to determine the effect of setting the acidity of tea production industrial waste and the mycelium growth of brown oyster mushroom. This research was designed by completely randomized design (CRD) with five treatments, which were pH 4, pH 5, pH 6, pH 7 and pH 8 in 5 replication. The results showed that the treatment of pH 8 and pH 7 on industrial waste of tea before weathering was optimum for the growth of mycellium (18 – 19,2 days) . Keywords: Acidity, waste of tea, Pleurotus cystidiosus, mycelium.
Jenis-jenis Tumbuhan yang Dikonsumsi Oleh Ungko (Hylobates agilis F. Cuvier) di Hutan Pendidikan dan Penelitian Biologi, Universitas Andalas Esa De Safela; - Syamsuardi; - Rizaldi
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

A study about species of plant consumed by Ungko (Hylobates agilis) at The Biological Education and Research Forest, Andalas University, has been done from July to November 2012. We used ad libitum observation to the gibbon’s feeding behavior and sampled those plants they ate. The samples were processed at Herbarium Andalas University (ANDA), Padang. Seventeen species of plants which belong to eleven families have been recognized as food resources of the gibbons. We described each species of the plants based on morphological characters primerily the part eaten by the gibbon. The results showed that most of the fruit eaten by ungko were fleshy, succulence, and easy to digest. The fruit types were bacca, legume, syconium, capsule and drupe. Keywords: Hylobates agilis, identification, plant species.
Laju Respirasi Kecoak Jerman (Blattella germanica, Dictyoptera; Blattellidae) yang Resisten Terhadap Insektisida Robby Jannatan; Resti Rahayu; Putra Santoso
Jurnal Biologi Universitas Andalas Vol 2, No 4 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.4.%p.2013

Abstract

An experiment on respiration rate of German cockroach (Blattella germanica, Dictyoptera; Blattellidae) that had been resistant to pyrethroid insecticide was done from December 2012 to Mei 2013. This experiment used completely randomized design with two treatments (with insecticide and without insecticide exposured) and three replications. The respiration rate were measured using the Scholander Respirometer. The control subject were VCRU-WHO as a susceptible strain standarized by WHO, while the resistance strains were GFA-JKT, KRSA-BDG, PLZ-SMRD and PLZ-PDG consisted of female, male and nymph Individuals. The results shown that respiration rates were not significant difference between susceptible and resistance strains on females (F: 0.373, df: 4, P: 0.823), males (F: 0.562, df: 4, P: 0.696) and nymphs (F: 0.402, df: 4, P: 0.803). The respiration rate were also not significant difference between with insecticide and without insecticide exposured, except within GFA-JKT females (F: 9.161, df: 4, P: 0.039), VCRU-WHO males (F: 11.779, df: 4, P: 0.026) and GFA-JKT nymphs (F: 8.733, df: 4, P: 0.042). Those results support that resistant cockroach do not increase respiration rate in responding insecticide exposured. Keywords: German cockroach, respiration rate, strains, insecticide exposured

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