Articles

Kondisi Terumbu Karang dengan Indikator Ikan Chaetodontidae di Pulau Sambangan Kepulauan Karimun Jawa, Jepara, Jawa Tengah. Suryanti, Suryanti; Supriharyono, Supriharyono; Indrawan, Willy
BULETIN OSEANOGRAFI MARINA Vol 1, No 1 (2011): Vol 1, No.1, Oktober 2011
Publisher : BULETIN OSEANOGRAFI MARINA

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Abstract Coral reefs are marine ecosystems in tropical marine life constructed by the producer of lime in particular species of stony corals and calcareous algae, together with the biota that live in the bottom of which is a types of molluscs, crustaceans, echinoderms, Polychaeta, Sponge and tunicates and marine biota others are living freely in the surrounding waters. Chaetodontidae or butterfly fish is ordinary reef fish while the distribution in surround coral reef only. The experts agreed on placing fish leadership as "indicator species" of coral reef condition, because this fish is a true coral reef inhabitants. This study aims to identify relationships between the abundance of coral reef condition Chaetodontidae fish in waters of Sambangan Islands, Karimun java, Jepara, Central Java. Research was conducted in July 2010 in waters Sambangan Island, National Park Karimunjawa. The research method is field observation method with the sampling method using the line transect method (line transect) on coral and fish transect data on fish along the 30m data. Data taken in this study are the data of physical parameters, data, coral cover and fish abundance. Results from this study showed that the percentage of coral coverage at a depth of three meters amounted to 70.92% and at a depth of 10 meters amounted to 66.05%. Closing percentage is the highest Reef on the West side of site B with a depth of three meters is equal to 82.50% while the percentage of closures of the least Reef is on the East side of site A with a depth of 10 meters that is equal to 64.80%. Types of coral reef growth that dominated in the waters of the island is Acropora Branching Sambangan. Percentage value of 16.71. The average abundance of fish on each transect Chaetodontidae with a depth of 10 meters (10 individuals / transect) is smaller than the depth of three meters (11 individuals / transect). The relationship between the abundance of fish Chaetodontidae with Closure Percentage Sambangan Coral Island at a depth of 3 meters is strong (Significant) and Positive (DC), whereas at a depth of 10 meters is a weak (non-Significant) and Positive (DC).   Keywords : percentage of coral coverage, Abundance of fish Chaetodontidae
PENGARUH TEH ROSELA (HIBISCUS SABDARIFFA) TERHADAP GANGGUAN KOORDINASI MOTORIK TIKUS YANG DIBERI ETANOL Suryanti, Suryanti
Majalah Keperawatan Unpad Vol 12, No 2 (2011): Majalah Keperawatan Unpad
Publisher : Fakultas Keperawatan Universitas Padjadjaran

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ABSTRAK Etanol menyebabkan penurunan aktivitas neuron, penurunan jumlah sel Purkinje pada cerebellum dan penurunan antioksidan endogen. Suplemen antioksidan yang mampu menembus sawar darah otak dan sampai cerebellum adalah jenis antioksidan antosianin, poliphenol dan flavonoid. Antioksidan tersebut berfungsi: menghambat apoptosis, mengembalikan sinyal neuron yang hilang, mampu mencegah dan melawan stres oksidatif, dan menetralkan ROS. H. sabdariffa mengandung polyphenol, antosianin dan flavonoid. Tujuan: Penelitian ini dilakukan untuk melihat apakah H. sabdariffa dapat mencegah gangguan koordinasi motorik pada tikus akibat pemberian etanol. Metode: Empat puluh ekor tikus Wistar jantan umur 21 hari, dibagi secara random menjadi 5 kelompok. Kelompok A diberi NaCl 0,9% (ip) dan air masak (oral), kelompok B diberi etanol 3g/kgbb (ip) dan air masak (oral), kelompok C diberi etanol 3g/kgbb (ip) dan H. sabdariffa 0,75g/kgbb (oral), kelompok D diberi etanol 3g/kgbb (ip) dan H. sabdariffa 1,5 g/kgbb (oral), kelompok E diberi etanol 3g/kgbb (ip) dan H. sabdariffa 3/kgbb (oral). Semua kelompok diberi pakan tikus non antioksidan. Semua tikus diberi perlakuan sesuai kelompoknya selama 2 hari berturut-turut diselingi 2 hari tanpa perlakuan selama 2 minggu. Pengujian koordinasi motorik dilakukan 2 kali yaitu sebelum dan sesudah perlakuan dengan uji tabung putar. Hasil: Hasil prosentase selisih uji tabung putar dari yang besar secara berurutan adalah: kelompok A (1,97%), kelompok B (0,65%), kelompok C (0,61%), kelompok D (0,19%), dan kelompok E (0,10%). Uji t berpasangan menunjukkan hasil yang bermakna hanya pada kelompok yang diberi etanol (p<0,05), dan kelompok yang lainnya menunjukkan hasil yang bermakna (p>0,05). Artinya etanol mengganggu koordinasi motorik dan H. sabdariffa mencegah gangguan koordinasi motorik pada tikus akibat pemberian etanol. Kesimpualnya: Hibiscus sabdariffa mencegah gangguan koordinasi motorik pada tikus akibat pemberian etanol. Kata Kunci: Antioksidan, Flavonoid, H. sabdariffa Koordinasi motorik, Poliphenol ABSTRACT Background: The consumption of ethanol causes damage to the cerebellum. The damage to the cerebellum includes the reduction of the activity of cerebellar neurons and the number of Purkinje cells. The consumption of etanol also causes the degeneration of endogenous antioxidants. Antioxidants supplements which are capable to penetrate the brain blood barrier include antosianin, polyphenol  and flavonoid. The functions of antioxidants include inhibiting apoptosis, restoring neuronal signals, preventing and fighting against oxidative stress, and neutralizing ROS. H. sabdariffa is a type of  herbal medicine. It contains polyphenol, antosianin, and flavonoid.  Objective: The aim of this study is to find out the effect of  H. sabdariffa on preventing the motor coordination  disturbance due to ethanol.  Method: Fourty male Wistar rats aged  21 day are divided randomly into 5 groups. Group A was given Nacl 0,9% (ip) and water (per oral). Group B was given ethanol 3g/kgbw (ip) and  water (per oral). Group C was given ethanol 3g/kgbw (ip) and H. sabdariffa 0,75g/kgbw (per oral). Group D was given ethanol 3g/kgbw (ip) and H. sabdariffa 1,5 g/kgbw (per oral). Group  E was given ethanol 3g/kgbw (ip) and H. sabdariffa 3g/kgbw (per oral). All groups were fed with antioxidants free rat food. All rats were treated for two days, every two days, for two weeks. Examination on motor coordination using revolving drum was conducted prior and subsequent to treatment.  Results: The percentages of the differences of the transformed data of the number of falls  in the revolving drum test from the highest to the lowest are as follows: 1,97% (the group A), 0,65%  (the group B), 0,61% (the group C), 0,19% (the group D), 0,10% (the group E). The paired uji t of the number of falls demonstrates  a significant difference between pre and post treatment in the ethanol group only (p<0,05). On the other hand the paired uji ts of the other groups show no significant differences (p>0,05). This means ethanol disrupts motor coordination ability in rats, and H. sabdariffa prevents the ethanol induced motor coordination disturbance. Conclusion: H. sabdariffa may prevent motor coordination disturbance and the ethanol disrupts motor coordination ability in rats. Keywords: Antioxidant, Flavonoid, H. Sabdariffa  Motor coordinatio, Poliphenol
PERUBAHAN LUAS HUTAN MANGROVE DI PULAU KEMUJAN TAMAN NASIONAL KARIMUNJAWA Suryanti, Suryanti; Anggoro, Dhaud
Pena Jurnal Ilmu Pengetahuan Dan Teknologi Vol 20, No 1 (2011): Pena Jurnal Ilmu Pengetahuan Dan Teknologi, Maret 2011
Publisher : Pena Jurnal Ilmu Pengetahuan Dan Teknologi

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Abstract

Karimun Island is one of the islands with the potential of natural resources is one of the very large which is a mangrove forest on the island Kemujan. Human activities and tourism activities tend to threaten the existence of mangrove forest on the island Kemujan. Information changes in land and development of human activities necessary for sustainable management of mangrove forests. This study aims to determine the level of mangrove forest cover in the island Kemujan, knowing that human activity significantly affects the condition of mangrove forests Kemujan Island National Park Karimunjawa. The study was conducted in 2 phases: a preliminary study in August and the last study in December 2009.     The method used in this study is the imaging method of observation and mapping, the research conducted to observe the phenomenon in the field to get actual data related to materials research. Data obtained from satellite image analysis and determination of the cause of the significant factors processed by SEM. As a result of image interpretation, in 1991, 2001 and 2009 found that island Kemujan gradually changing area. In 1991, the area is 11.734 ha kemujan which gradually changed to 12.617 hectares in 2001 to 2009 by 11.177 HA. The main reason these changes based on public perception derives from public activities such as cleaning ponds, seaweed cultivation and so on.Keyword : mangrove forest, satellite imagery, kemujan island, SEM analysis
POTENSI PADANG LAMUN SEBAGAI PENYERAP KARBON DI PERAIRAN PULAU KARIMUNJAWA, TAMAN NASIONAL KARIMUNJAWA (Ability of Seagrass Beds as Carbon Sink in The Waters of Karimunjawa Island, Karimunjawa National Park ) Ganefiani, Ajeng; Suryanti, Suryanti; Latifah, Nurul
SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology Vol 14, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

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Perubahan iklim disebabkan karena meningkatnya kandungan Gas Rumah Kaca seperti karbon dioksida (CO2), klorofluorokarbon (CFC), ozon (O3), dinitro oksida (N2O), metana (CH4), heksafluorida (SF6), hidrofluorokarbon (HFCS), perfluorokarbon (PFCS)). Diantara kedelapan gas tersebut, konsentrasi gas CO2 di atmosfer memiliki kontribusi terbesar yaitu lebih dari 55% dari total efek GRK yang ditimbulkan. Salah satu upaya pencegahan yang dapat dilakukan untuk menurunkan emisi GRK adalah dengan memanfaatkan lautan dan ekosistem pesisir sebagai penyerap CO2 alami (natural CO2 sink). Lamun merupakan tumbuhan laut yang berkontribusi terhadap penyerapan karbon melalui proses fotosintesis yang kemudian disimpan dalam bentuk biomassa pada bagian daun, rhizoma dan akar. Tujuan penelitian adalah untuk mengetahui jenis lamun, kerapatan dan tutupan lamun serta potensi penyerapan karbon dalam biomassa berupa jaringan atas substrat dan bawah substrat lamun yang dilakukan pada bulan Maret 2018 di Pulau Karimunjawa. Identifikasi jenis lamun dilakukan dengan melihat panduan buku seagrasswatch, kerapatan dan tutupan dilakukan dengan metode transek kuadran. Analisis kandungan karbon dilakukan dengan metode pengabuan. Hasil penelitian ditemukan 8 jenis lamun yaitu Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, Halophila minor, Halodule uninervis, Halophila ovalis dan Syringodium isoetifolium. Thalassia hemprichii dan Cymodocea rotundata memiliki nilai kerapatan tertinggi dengan kerapatan mencapai 450 ind/m2 dan 1204 ind/m2. Nilai biomassa dibagian bawah susbtrat berkisar 970,39 - 1.412.55 gbk/m2 yang lebih besar dibandingkan nilai biomassa lamun dibagian atas substrat berkisar 371, 88 - 546, 38 gbk/m2 diikuti nilai penyerapan karbon dibagian bawah substrat (akar dan rhizoma) berkisar antara 12,60 – 93,62 gC/m2, sementara kandungan karbon dibagian atas substrat (daun) berkisar antara 4,19 – 34,12 gC/m2. Total stok karbon di perairan Pulau Karimunjawa berkisar antara 1,28 ton karbon – 2,49 ton karbon atau sebesar 0,50 – 0,73 ton karbon/ha Climate change is caused by increasing greenhouse gases content such as carbon dioxide (CO2), chlorofluorocarbon (CFC), ozone (O3), dinitro oxide (N2O), methane (CH4), hexafluoride (SF6), hydrofluorocarbons (HFCS), perfluorocarbons (PFCS) )). Among the eight gases, the concentration of CO2 gas in the atmosphere has the largest contribution, which is more than 55% of the total GHG effects generated. One of the preventive measures that can be taken to reduce GHG emissions is to use the oceans and coastal ecosystems as natural CO2 sinks. Seagrass is a marine plant that contributes to carbon sequestration through photosynthesis which is then stored in the form of biomass in the leaves, rhizomes and roots. This research aims to know the types of seagrass, seagrass cover and potential density of biomass carbon of above the substrate (leaves) and below the substrate seagrass (roots and rhizomes) in March 2018 at Karimunjawa Island. The identification of seagrass types used guidance book of seagrasswatch and the identification of seagrass cover and density was carried out using transect quadrant method. Analysis carbon content used ashing method. The result of the present study found 8 species of seagrasses that Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Thalassia hemprichii, Halophila minor, Halodule uninervis, Halodule ovalis and Syringodium isoetifolium. Thalassia hemprichii and Cymodocea rotundata have the highest density value reached 450 ind/m2 and 1,204 ind/m2. Value biomass below substrate ranged from 970.39 to 1.412.55 gbk/m2  which is greater than the value biomass above the substrate ranged from 371, 88 - 546, 38 gbk/m2 followed by the value of the carbon adsorption in below the substrate (roots and rhizomes) ranged from 12.60 to 93.63 gC/m2, whilst the carbon content above the substrate (leaves) ranged from 4.19 to 34.12 gC/m2. Total carbon stock in the waters of Karimunjawa Island ranged from 1.28 – 2.49 tons of carbon or of 0.50 to 0.73 tons of carbon/ha.
Meningkatkan Hasil Belajar Siswa Kelas II SDN I Kayu Agung dalam Pembelajaran PKn dengan Menggunakan Media Gambar Suryanti, Suryanti; Harun, Abduh H.; Septiwiharti, Dwi
Jurnal Kreatif Tadulako Online Vol 1, No 3 (2013): Jurnal Kreatif Tadulako Online
Publisher : Jurnal Kreatif Tadulako Online

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Abstract

Penelitian ini berjudul Meningkatkan hasil belajar siswa kelas II SDN I Kayu Agung dalam pembelajaran PKn dengan menggunakan media gambar. Permasalahan sehingga dilakukan penelitian yaitu rendahnya hasil belajar siswa. Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa. Penelitian ini mengikuti jenis penelitian tindakan kelas yang bersiklus yang terdiri dari perencanaan, pelaksanaan tindakan, observasi dan refleksi. Data yang diambil dari penelitian ini adalah data kualitatif dan kuantitatif. Hasil penelitian siklus I diperoleh tuntas undividu 13 orang dan tidak tuntas individu 7 orang dengan persentase daya serap klasikal 77% dan ketuntasan belajar 65%. Pada sisklus II diperoleh peningkatan yaitu seluruh siswa dinyatakan tuntas dengan persentase daya serap klasikal 90% dan persentase ketuntasan belajar 100%. Data kualitatif pada siklus I aktivitas guru diperoleh persentase nilai rata-rata 66%, dan aktivitas siswa diperoleh persentase nilai rata-rata 61%. Pada siklus II mengalami peningkatan untuk aktivitas guru dengan persentase nilai rata-rata 93% begitu pula pada aktivitas siswa mengalami peningkatan persentase nilai rata-rata 90%. Dengan demikian bahwa penggunaan media gambar dikelas II SDN I Kayu Agung dapat meningkatkan hasil belajar.   Kata Kunci : Hasil Belajar PKn, Media Gambar  
The Depth Influence to the Morphology and Abundance of Corals at Cemara Kecil Island, Karimunjawa National Park Suryanti, Suryanti; Supriharyono, Supriharyono; Roslinawati, Yulia
SAINTEK PERIKANAN Vol 7, No 1 (2011): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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The dominant species of coral depends on environmental conditions or habitat where corals were alive. According to coral life growth, corals have two classification, Acropora and non-Acropora, with different types of morphology branching, massive, encrusting, foliose,  tabulate, submassive, mushroom and   digitate. Lifeform was influence of some nature factor,one of this factor is depth. The aims of this research were to find and examine the influence of depth on coral morphology, to find abundance of coral, and to find morphology of corals at Pulau Ce mara Kecil, Taman Nasional Karimunjawa. The research  was conducted in August  until December 2009, in Cemara Kecil Island, Karimunjawa National Park. The research method used was eksplanatif method, sampling method using the line transect method along 20 m. The data gathered were an abundance of corals, reef morphology, coral diversity, and physical-chemical parameters. Research data  processed by non-parametric test 2 Independent Samples SPSS 16.  The results of this research showed that were not significant difference between corals morphology in depth of 3 m and 10 m.There were 10 species of coral, Acropora Digitate and Acropora Branching species most commonly found at a depth of 3 m, at depth of 10 m most commonly found was submassive coral species. The percentage of live coral abundance range between 52.5% - 79.5%, was generally grouping into well categories until very well. Percentage abundance of the largest reef in the southern part of the depth of 10 m, based on non parametric test 2 independent sam ples showed that it had no significant difference between abundance corals in depth of 3 m and10 m.   Keywords: depth, morphology of coral
KAJIAN TINGKAT SAPROBITAS DI MUARA SUNGAI MORODEMAK PADA SAAT PASANG DAN SURUT Suryanti, Suryanti
SAINTEK PERIKANAN Vol 4, No 1 (2008): Jurnal Saintek Perikanan
Publisher : SAINTEK PERIKANAN

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Abstract

Muara  sungai  mengalami  fluktuasi  salinitas  yang  disebabkan  oleh  pasang  surut  air  laut.  Fitoplankton merupakan produsen primer  yang mampu membentuk zat organik dari zat anorganik.  Fitoplankton dapat melakukan fotosintesis yang menghasilkan karbohidrat dan oksigen serta merupakan awal dari rantai makanan di perairan. Kondisi ekologis di daerah muara sungai Morodemak diperkirakan akan semakin menurun akibat meningkatnya pemanfaatan wilayah pantai secara intensif. Kapal-kapal dan bagan apung banyak bersandar di muara sungai ini. Tambak-tambak intensif juga telah banyak  dibangun. Keadaan ini diduga menyebabkan menurunnya  kualitas  lingkungan  muara  sungai   Morodemak.  Penelitian  ini  dilakukan  untuk  mengkaji bagaimana  kondisi  lingkungan  muara  sungai  Morodemak.  Pengamatan  dilakukan  berdasarkan  analisis  SI (Saprobik Indeks) dan TSI (Tropik Saprobik Indeks) untuk mengetahui sejauh mana tingkat pencemaran yang terjadi. Materi yang digunakan dalam penelitian ini adalah fitoplankton yang berada di perairan Muara Sungai Morodemak berikut parameter fisika dan kimia. Kelimpahan fitoplankton pada Muara Sungai Morodemak pada waktu pasang adalah 35.415 Ind/L dengan 16 genera dan pada waktu surut 27.684 Ind/L dengan 15 genera. Nilai SI pada saat pasang adalah 1,18 dan 1,00 pada saat surut serta nilai TSI 1,32 pada saat pasang dan 1,34 pada saat surut. Nilai tersebut menunjukkan bahwa pada saat pasang tingkat pencemaran di muara lebih tinggi dibandingkan pada saat surut. Nilai SI dan TSI fitoplankton dapat diketahui bahwa kondisi  perairan muara sungai Morodemak tercemar sedang sampai ringan. Tingkat pencemaran yang lebih  tinggi pada saat pasang dibandingkan pada saat surut tersebut mengindikasikan bahwa  parameter-parameter pencemar lebih berasal dari  kegiatan-kegiatan  di  laut  dibandingkan  kegiatan-kegiatan  di  darat,  seperti  bersandarnya  kapal-kapal penangkap ikan dan bagan apung di muara sungai. Kata kunci : Saprobitas, Muara sungai, Pasang Surut
Optimalizatiom use of Seagrass Leafs Thalassia hemprichii As Natural Antioksidan Source Tristanto, Riki; Putri, Megawati Arsita; Situmorang, Anggun P.; Suryanti, Suryanti
JURNAL SAINTEK PERIKANAN Vol 10, No 1 (2014): JURNAL SAINTEK PERIKANAN
Publisher : JURNAL SAINTEK PERIKANAN

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Seagrass is a wealth of marine resources, one of the ecosystems found in coastal areas, able to produce a variety of secondary metabolites, and one water plant that has important benefits that can replace natural source of antioxidants that seagrass (seagrass). Seagrasses are flowering plants (Angiospermae) who can adjust himself to life in the sea water. The purpose of this study was to determine the antioxidant potential in seagrass leaves. Extraction using maceration with the way the samples were stored by using the solvent n-hexane, ethyl acetate and methanol for each 1x24 hours after it evaporated with a vacuum rotary evaporimeter to obtain a crude extract, then extract tested by using antioxidant aktvitas diphenilpycrylhydrazil (DPPH). Antioxidant activity test carried out by the ability of the samples used in reducing the stable free radical diphenilpycrylhydrazil (DPPH). Three milliliters diphenilpycrylhydrazil (DPPH) as a positive control was weighed and added to methanol with a ratio of 1:3. An additional 2 mg of DPPH was diluted with 50 mL of methanol and added at each 1 mL to 3 mL of methanol at a concentration of 75 ppm, 125 ppm and 175 ppm. DPPH mixture is homogenized and rested for 30 minutes. Antioxidant activity assay on leaf Seagrass Thalassia hemprichii showed that the IC50 value of 25.98344501. This value indicates that the samples tested were able to inhibit the free radicals are very strong. Samples containing great potential in the utilization as a source of natural antioxidants  Keywords : Extraction, Maceration, Antioxidant, DPPH
The Difference in Abundance of Echinoideas on Coral Ecosystem and Seagrass Beds in Pancuran Belakang, Karimunjawa, Jepara Suryanti, Suryanti; Ruswahyuni, Ruswahyuni
JURNAL SAINTEK PERIKANAN Vol 10, No 1 (2014): JURNAL SAINTEK PERIKANAN
Publisher : JURNAL SAINTEK PERIKANAN

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Abstract

Phyllum of echinoderms has a large role on the ecosystems of coral reefs and seagrass beds, especially their various roles in foodweb, which are herbivorous covering, carnivorous, or as detritus eaters. One of the echinoderms which is always found in the coralreefs region and seagrass beds is the echinoidea. Echinoidea mostly inhabits coral reef ecosystem and seagrass beds and found onhard substrates, especially in seagrass beds substrates that consist of mixtures of sand and crushed corals. The purpose of thisresearch was to know the difference in the echinoidea abundances of coral reef ecosystem and seagrass beds in Pancuran Belakang,Karimunjawa, Jepara in the month of May 2014. Research methodology that was used is a method of direct observation that is bymeans of observing the species of echinoidea found in coral reef ecosystems and seagrass beds and water quality conditions assupporting data. The research results showed that the cover of coral reefs and seagrass beds in Pancuran Belakang Karimunjawa inthe category of good which are of 55.29 % on coarl reef and 61.94 % seagrass. The echinoidea that was found in reefs and seagrassbeds is Diadema setosum (123;36 ind (150 m)-2), Diadema antilarum (63;18 ind(150 m)-2), Echinothrix calamaris (34;22 ind (150m)-2), Mespilia globulesa (12;0 ind(150 m)-2), and Echinometra mathaei (14;0 ind(150 m)-2), The independent t test with SPSSsignificant value of 5 % t table = 2.776 > t calculated = -2.319. Therefore, Ho was accepted that there is a significant difference ofthe echinoidea on the coral reefs and seagrass beds.Keywords : Echinoideas; Coral Reef; Seagrass, Pancuran Belakang and Karimunjawa
Identification of the Causal Agent of Cocoa Pod Rot Disease from Various Locations Komalasari, Indri; Suryanti, Suryanti; Hadisutrisno, Bambang
Jurnal Perlindungan Tanaman Indonesia Vol 22, No 1 (2018)
Publisher : Universitas Gadjah Mada

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Abstract

Cacao (Theboroma cacao L.) is an important estate commodity in Indonesia with high economic value. The interference of cocoa pod rot disease which was affected by Phytophthora palmivora Butl. resulted in the reduction of the quantity and quality of cocoa beans, with losses up to 44%. This research was aimed to figure out the variation in morphology of P. palmivora isolates from cacao. The research was carried out by collecting samples of cocoa pod with rot symptoms in several cacao growing areas in Java, then the pathogen was isolated and cultured on Potato Dextrose Agar (PDA) medium. The observation was performed on morphological characteristics of isolates macroscopically (colony shape) and microscopically (size of sporangium and chlamydospores). All tested isolates showed various colony shape such as stellate, cottony and irregular as well as sporangium varying from obpyriform, globose, ellipsoid, ovoid and distorted with various size between 30.8×21.9–65.5×46.5 µm in range.IntisariKakao (Theboroma cacao L.) merupakan komoditas perkebunan unggulan di Indonesia dengan nilai ekonomi tinggi. Gangguan penyakit busuk buah kakao yang disebabkan oleh Phytophthora palmivora Butl. mengakibatkan penurunan kuantitas dan kualitas biji kakao, dengan kerugian mencapai 44%. Penelitian ini bertujuan untuk mengetahui variasi morfologi isolat P. palmivora asal kakao. Penelitian dilakukan dengan mengambil sampel buah kakao bergejala busuk buah di beberapa area perkebunan kakao di Jawa, kemudian patogen diisolasi dan dikulturkan pada media Potato Dextrose Agar (PDA). Pengamatan dilakukan terhadap karakteristik morfologi isolat secara makroskopis (bentuk koloni) dan mikroskopis (ukuran sporangium dan klamidospora). Semua isolat yang diuji menunjukkan bentuk koloni seperti stellate, cottony, dan irregular serta sporangium yang bervariasi dari obpyriform, globose, ellipsoid, ovoid, dan distorted dengan ukuran bervariasi antara 30,8×21,9−65,5×46,5 µm.
Co-Authors Abduh H. Harun Achmad Noerkhaerin Putra, Achmad Noerkhaerin Angelia Maharani Setya Putri, Angelia Maharani Setya Anggun P. Situmorang Ariani, Dwi Arif Wibowo Bambang HADISUTRISNO Boedi Hendrarto Christanti Sumardiyono Churun A’in Chusna, Rendra Rini Rismatul Citra Mayang Wardhika, Citra Mayang Daisy Prapto Sriyanti, Daisy Prapto Dhaud Anggoro Diah Lestari Ayudiarti Djagal Wiseso Marseno Dwi Kiswanti, Dwi Dwi Septiwiharti Dwiyitno Dwiyitno febrianto, sigit Fredy Hermanto, Fredy Gamawan, Rosyid Paundra Ganefiani, Ajeng Hari Eko Irianto Harissman, Harissman Hendra Hendra Heryana, Rafika Himatul Aliyah Febriana, Himatul Aliyah Ikasari, Diah Ismoyo, Untung JAKA WIDADA Komalasari, Indri Max Rudolf Muskananfola Megawati Arsita Putri Muhammad Imron, Muhammad Muljanah, Ijah Mulyadi Mulyadi Nia, Eka R Niniek Widyorini Nugroho, Setiaji Nugroho, Setiaji Nurkhairo Hidayati, Nurkhairo Nurul Aulia, Devi Lestari nurul latifah Pramesti, Cicik Pujiono Wahyu Purnomo Putri Rositasari, Putri Retno Indrati Riki Tristanto Rizal Syarief Rosmawaty Paranginangin Rosmawaty Peranginangin Ruswahyuni Ruswahyuni S, Dwi Ariani Safitri, Fani Sakinah Haryati Sari, Marlina Puspita Siti Rudiyanti SRI SULANDARI Subaryono Subaryono, Subaryono SUHARYANTO SUHARYANTO Sukarno Sukarno Supriharyono Supriharyono Suryaningrum, Theresia Dwi Susamto Somowiyarjo Susilo Hadi, Susilo T, Nefri Taufik, Akbar Tazwir Tazwir Tri Harjaka, Tri Tri Joko Wibawa, Teja Arief wignyo, su Willy Indrawan Wiwi Siti Rohmah, Wiwi Siti Y. M.S. Maryudani, Y. M.S. Yufita Dwi Chinta, Yufita Dwi Yulia Roslinawati