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A Study of Fungal Growth in Alternative Media of Breadfruit (Artocarpus altilis) in Direct and Powder Formulations: Studi pertumbuhan jamur pada media alternatif sukun (Artocarpus altilis) pada sediaan langsung dan powder
No full textBackground: Medium is a material consisting of a mixture of nutrients which functions as a place to grow microbes. Semi-synthetic media such as PDAs contain sufficient carbohydrates so that they are good for use for fungal growth. This medium is quite a lot needed in the breeding of Candida albicans and Aspergillus niger both in the laboratory. However, the price of this media is quite expensive and limited, while the need is increasing so that alternative media are needed to replace the breeding.
Objective: To determine the growth rate of unicellular and multicellular fungi on breadfruit alternative media (Artocarpus altilis) in semi-solid and powder dosage forms.
Methods: This study is a descriptive study with a laboratory instrumental approach
Results: An alternative medium of tribal composition, dextrose, so that the semi-solid dosage form and powder form could grow Candida albicans and Aspergillus niger well
POLA DISTRIBUSI DAN KERAPATAN ROTAN (Daemonorops robusta Warburg) DI HUTAN PEGUNUNGAN SEKITAR NOKILALAKI KECAMATAN PALOLO KABUPATEN SIGI SULAWESI TENGAH
No full textPenelitian tentang ’’Pola Distribusi dan Kerapatan Rotan (Daemonorops robusta Warburg) di Hutan Pegunungan Sekitar Nokilalaki Kecamatan Palolo Kabupaten Sigi Sulawesi Tengah’’ telah dilakasanakan dari bulan Desember 2018 sampai Februari 2019. Penelitian ini menggunakan metode survey eksploratif dengan menjelajah kawasan pegunungan Nokilalaki, untuk mencari populasi D. robusta Warburg. Proses pengambilan sampel menggunakan metode garis transek yang berukuran 50 x 10 m dengan penempatan transek secara purposive sampling sebanyak 7 buah. Hasil pengamatan menunjukan bahwa hasil Indeks Morisita pada D. robusta Warburg yaitu mengelompok dan nilai kerapatan relatif tertinggi pada tingkat anakan terdapat pada transek I yaitu 32,4%,terendah pada transek III yaitu 8,1% dan nilai kerapatan relatif tertinggi pada tingkat dewasa terdapat pada transek I 38,4% dan terendah pada transek II dan VI yaitu 11,5%
KEANEKARAGAMAN DAN KELIMPAHAN JENIS TERIPANG DI PANTAI LANDU, PULAU LANDU, KABUPATEN ROTE NDAO
No full textLandu beach is a beach located on Landu Island, Southwest Rote District, Rote Ndao Regency, which is the southernmost district in Indonesia. Sea cucumbers are used by the coastal community of Landu Beach as food and sold to the market as a source of income. So far, it is not scientifically known the types of sea cucumbers and the level of sea cucumber diversity in the coastal waters of Landu. Therefore, this study aims to identify the diversity and abundance of sea cucumbers on Landu Beach, Landu Island, Rote Ndao Regency. This study used a survey method with the sampling technique using the quadratic transect method (quadrant transect method). With 5 transects, each transect consists of 5 plots. The data taken were in the form of sea cucumber species, the number of sea cucumbers per plot, and the state of the substrate per observation plot. The results of the study found 4 types of sea cucumber species in Landu Beach, namely Holothuria scabra, Holothuria arata, Holothuria leucospilota, and Bohadchia marmorata. The abundance of each type of sea cucumber found was Holothuria Scabra with the highest abundance value, namely 2.44 ind / m2 followed by Holothuria Arta (2.16ind / m2), Bohadchia Marmorata (1.92 ind / m2), and Holothuria Leucospilota (1.68 ind. / m2). Bohadchia Marmorata species has a frequency of 1.0 which means this species was found in the research plot seedlings. The next frequency values ​​are Holothuria Scabra (0.72), Holothuria Arta (0.68), and the lowest frequency value is Holothuria Leucospilota (0.60). For the diversity index value according to the Shannon-Wiener index (H ') ranges from 1.37 so it is categorized that Landu Beach has moderate diversity
KAJIAN MORFOLOGI Drosera burmanni Vahl. DARI DESA MAHOLO, KECAMATAN LORE TIMUR, KABUPATEN POSO, SULAWESI TENGAH
No full textThe research entitled Morphological Studies of Drosera burmanni Vahl. From Maholo Village, Lore Timur District, Poso Regency Cental Sulawesi has been conducted from March to April 2017. The objective of research was to described the morphology character of Drosera which was found in studied area. The research was used botanical exploration in the studied area the morphological character was described followed Van Steenis (1953). The result showed the there were 820 individuals of Drosera burmanni Vahl. the description is provided in this paper
KELIMPAHAN BINTANG LAUT MAHKOTA DURI (Acanthaster planci L.) DI TELUK TOMINI, SULAWESI TENGAH
No full textThis study was aimed to determine the abudance crown of thorn starfish (Acanthaster planci L.) in the Gulf of Tomini, Central Sulawesi. The study was conducted in February─April 2019 preliminary method used a purposive sampling (determining the sampling point for transect sampling) and the belt transect method which is 20 x 2 m. Sampling of A. planci was carried out at 4 stations. Data collected were the number of individuals, measurement of environmental parameters including Temperature, pH, Salinity, DO and Substrate observations on habitat. Based on the results of the study, 48 individuals at all stations and the abundance of A. planci in the Gulf of Tomini, Central Sulawesi were in the natural/normal category with a value of 0.01 ind/m2─0.25 ind/m2
UJI KEEFEKTIFAN EKSTRAK ALELOPATI AKAR TEKI (Cyperus rotundus L.) DAN BANDOTAN (Ageratum conyzoides L.) TERHADAP PERTUMBUHAN SAWI HIJAU (Brassica rapa L.)
No full textWeeds such as Cyperus rotundus L. dan Ageratum conyzoides L. release allelopatic compounds which can inhibit the growth of crops. The aim of this study was to compare the inhibition of allelopatic compounds contained C. rotundus L. and A. conyzoides root exctract to Brassica rapa L. growth. This study was conducted in a greenhouse and was based on Completely Randomized Design with two factors. The first factor was type of root extracts (extract from either C. rotundus root or A. conyzoides root) and the second factor was concentration of root extract. Root extract concentrations added to growth medium of B. rapa L. 10 days after planting were 0, 100, 300 and 500 g/L respectifely. The addition of root extract was repeated every week until crop harvested. The results showed that there was not significantly different between C. rotundus and A. conyzoides roots extract to inhibit B. rapa growth. Increassing of root extract concentrations from both roots increased inhibition of B. rapa growth
FORMULASI MEDIA PERTUMBUHAN MISELIUM JAMUR TIRAM PUTIH (Pleurotus ostreatus (Jacq) P. Kumm) DENGAN SUPLEMENTASI LIMBAH SABUT KELAPA
No full textThe research entitled Formulation of media for growth of white oyster mushroom mycelium ((Pleurotus ostreatus (Jacq) P. Kumm) with waste of coconut fiber supplementation was carried out out in Biotechnology Laboratory unit, Department of Biology, Faculty of Mathematics and Natural Sciences. This research purposes; (a) To find out the formulation of coconut fiber waste as a supplementary medium for growing white oyster mushrooms (P.ostreatus); (b) to find out the formulation at the maximum dose of coconut husk supplementation in the medium for good growth of white oyster mushrooms (P.ostreatus). This study was designed based on a Completely Randomized Design (CRD) consisting of 7 settings and 4 replications. The help arrangement is given between Sawdust: Rice Bran: Lime: Coconut Fiber Waste. Namely M0 (Basic media 100%, without Supplements), M1 Basic media 95% + Supplements 5%, M2 (Basic media 90% + Supplements 10%), M3 (Basic media 85% + Supplements 15%), M4 (Basic media 80% + Supplement 20%), M5 (Basic media 75% + Supplement 25%), M6 (Basic media 70% + Supplement 30%). Observation parameters; (a) prohibiting mycelium; (B) Incubation time; (c) Number of colonies (Colony Forming Units); (d) Macroscopic and microscopic observations of mycelium. The results showed that the fastest mycelium growth in M6 treatment was 1.193 cm and the lowest was M0 treatment which was 1.123 cm. The lowest incubation time at M6 is 28 days and the lowest at M0 is 44 days. The highest number of colonies (CFU) in M6 treatment was 1.96 x 10 -12 CFU / g and the lowest was maintenance of M3 1.03 x 10-12 CFU / g
JENIS-JENIS Hoya (APOCYNACEAE) DI GUNUNG SIDOLE, KECAMATAN AMPIBABO, KABUPATEN PARIGI MOUTONG, SULAWESI TENGAH
No full textA research about species diversity of Hoya (Apocynaceae) in Sidole Mountain, Ampibabo District, Parigi Moutong Regency of Central Sulawesi has been conducted from December 2018 to March 2019. The research was conducted by using botanical exploration method that aim to record and describe species of Hoya based on morphological characters The results showed that there were 2 species of Hoya namely H. camphorifolia Warb and H. imbricata Decne
PRODUKTIVITAS PRIMER PERAIRAN DANAU SIBILI KECAMATAN TAWAELI, KOTA PALU, SULAWESI TENGAH
No full textThe research "Primary Productivity of Lake Sibili of Tawaeli District, Palu City, Central Sulawesi" was carried out from January to February 2019. This study aims to determine the primary productivity of waters and the physical and chemical parameters of Lake Sibili and as a first step in the use of Lake Sibili sustainable. This study was carried out using the method of oxygen light bottles and dark bottles. The results of the research have shown that station III has the highest net photosynthesis with a value of 1.875.0 mgC/m3/day (Table 2) this is caused by the temperature and pH of the station is relatively high which has an average temperature of 30.3 oC and average pH - 7.6 so that this can increase the rate of photosynthetic activity by phytoplankton while the lowest net photosynthetic value is at station I with a value of 812.4 mgC/m3/day which has a relatively lower temperature and pH compared to other stations which have an average temperature average of 28.9 oC and average pH 7. so that based on primary productivity values obtained during the study, the waters of the lake Sibili can be categorized as Eutrophic waters
KERAGAMAN GENETIK, HERITABILITAS DAN KORELASI ANTAR KENTANG (Solanum tuberosum L.) YANG DIBUDIDAYAKAN DI NAPU
No full textPotato (Solanum tuberosum L.) is one of crops which cultivated by farmers in Central Sulawesi. These potatoes are traditionally cultivated without going through the breeding process, so they have high variations. This study aims to obtain information on genetic diversity, heritability, and correlation between the characterics of potatoes from farmers in Napu who are still cultivating potato crops. Design used in this study was a randomized block design with two replications. The results showed that tuber color and harvest age had a small coefficient of genetic diversity. The heritability values ​​of tuber color are include in the small category, Diameter of stem, number of leaves, leaf length, leaf width, leaf color, tuber length, tuber diameter, tuber weight, number of tuber and harvest age in this study are include in the high category. So that, these characteristics can be derived and selection can be made. In Napu potatoes, the number of tubers was genetically positively (medium) correlated between plant height and stem diameters, plant height with leaf width, leaf length with leaf width, leaf length with tuber diameters and tuber diameters with the number of tubers. While the positive correlation was very significant (strong) between plant height and leaf length, and very significant (strong) negative correlation between leaf color and tuber length, so can be used as a selection criteria for increasing potato crops