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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2,125 Documents
 164   165   166   167   168 
KARAKTER MORFOLOGI DAN POLA PERKECAMBAHAN BIJI Strombosia javanica Bl. (Olacaceae) DALAM KAITANNYA DENGAN SIFAT-SIFAT PARASITISME Erlin Rachman; Sunaryo Sunaryo
BERITA BIOLOGI Vol 4, No 5 (1999)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i5.1241

Abstract

A study on seed germinations of Strombosia javanica BL. was conducted to observe morphological character and germination pattern of the seedling. As many as 134 seeds of the species, originally collected in Bogor Botanical Gardens, were germinated on medium contain soil, sands and compost in same quantity. Germination aspects such as germination patterns and developmental changes were monitored everyday until the first leaves appear. The seed germinations was typically hypogeal and totally spent 160-170 days, and consisted at least six stages: hypocotyl growth, radix primordial formatton, seedling root growth, seed ball lifting, seed ball removal and first leaves appearance. Rather intact seed ball remain exist at the end of hypocotyl vigorously mtil its removal, pmsumably one of special phenomena of the species germination associated to plant parasitism. Functionally, development of the cotyledons were abnormally suppressed by the existence of the seed ball. The cotyledon praphotosynthetic function seems to be replaced by greeny hypocotyl. First leaves development were never occurred before the seed ball removal. Seed coat elimination was able to increase germination initiation in a given time but facilitated damaging bacteria or fungi to contaminate the endosperm.
ELISITASI PENINGKATAN PRODUKSI AJMALISIN OLEH KALUS Catharantus roseus (L.) G. Don. Marina Silalahi
BERITA BIOLOGI Vol 10, No 3 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i3.745

Abstract

An experiment to study the effect of soft fraction derived from Saccharomyces cerevisiae (Hansen) to elicit ajmalicine production by Catharanthus roseus (L.) G. Don. callus cultures has been conducted. Callus were induced from leaf segment and grew on Zenk medium supplemented with 2,5 x l0M NAA dan 10 M BAP respectively. Callus on the third subculture level were elicited with soft fraction derived from S. cerevisiae. The following concentrations of elicitor tested were 0, 0,5, 1,0 and 2,5 % (g/v), and the harvesting times were 0, 18, 36 and 72 hour respectively. Influence of elicitor to production of ajmalicine by the callus were analyzed qualitatively and quantitatively by using high performance liquid chromatography (HPLC). A significant increasing of ajmalicine content in the callus (303,475 ± 5,602 ug/gDW) was achieved by addition of elicitor of 0,5 % (g/v) after 36 hour. This study showed a significant increase of ajmalicine production in C. roseus callus cultures after being challenged with elicitor derived from S. cerevisiae i.e. 69,334%.
KERAGAMAN GENETIK, HERTTABILITAS DAN KORELASI BEBERAPA KARAKTER AGRONOMI PADA GALUR F2 HASIL PERSILANGAN KACANG HIJAU (Vigna radiata (L.) Wilczek) Lukman Hakim
BERITA BIOLOGI Vol 10, No 1 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i1.2047

Abstract

The F2 progenies of two crosses among three mungbean varieties were evaluated with their parents (Varsha, Park it and Local Belu)at Muara Experimental Station, Bogor during dry season of 2007. The experiment was conducted in a randomized complete block design with three replications. The seed of each F2 progenies and parents were planted in four rows of four meters long.Plant spacing was 40 x 20 cm, each will contained one plant. Among the character studies, days to maturity, seed yield per plant and plant height had the highest coefficient of variability, with the mean of 51.3%, 49.8%, and 49.2% respectively.Number of branches, pod length and number of seed per pod had the lowest coefficient of variability, and the mean were 19.1%, 18.8%, and 17.6%.The heritability estimates of nine agronomic characters studied ranged from IS.6 to 65.2%. Plant height and number of pods per planthad the highest heritability estimates with mean of 65.2% and 58.6% respectively for the two crosses. The mean heritabilityestimate for seeds yield per plant, pod length and number of seeds per pod were the lowest of 19.4%, 18.3% and 15.6% respectively. Based on the F2 data, selection of plant height and days to maturity had the highest expected genetic advance of 45.8 and 41.0%.The mean expected genetic advance for pod length and number of seeds per pod were the lowest of 19.4 and 17.4%.Correlation coefficient between grain yield with plant height, number of pods per plant and seed size were positively significant (r = 0.404, 0.613 and 0.422 respectively). Correlation coefficient between grain yield with other agronomic characters were small or negative. Therefore, plant height, number of pods per plant and seed size can be used as the selection criteria in selecting mungbean genotypes for high yield.
PENGUJIAN BEBERAPA BIAK RHIZOBIUM SEBAGAI INOKULAN DAN PENGARUHNYA TERHADAP PERTUMBUHAN ALBIZIA CHINENSIS DAN A. LEBBECK S.H. RAHAJU; H.J.D. LATUPAPUA; S. ABDULKADIR
BERITA BIOLOGI Vol 3, No 7 (1987): (Supplement)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i7.1377

Abstract

S.H. RAHAJU, H.J.D. LATUPAPUA & S.ABDULKADIR. 1987.The evaluation of some Rhizobium strains as the inoculants and then effects on the growth of Albizia chinensis and A. lebbeck. Suppl. Berita Biologi 3 : 38 - 44. A study was conducted to evaluate some Rhizobium strains on the growth of A. chinensis and A. lebbeck and used them as the inoculants. Three experiments were carried out under the green house conditions, the 0.5 gallon plastic pots were filled with sterile sand as the medium. The experimental design was carried out Completely Randomized Design with five replicates. The first and second experiments were implemented on A chinensis which were consisted of 10 and 7 Rhizobium strains respectively, whilst the third experiment was implemented on A. lebbeck by using 18 Rhizobium strains. Each experiment was lasted in three months. The parameters of investigation were dry weight of total plants, the plant parts above the medium surface, the plant parts under the medium surface, the roots and the nodules respectively, also was counted the symbiotic capacity. The results showed that all inoculated plants produced nodules except the plants that were inoculated with Rhizobium sttains Cg and Ri. The best inoculant was strain number 34 which implemented on A chinensis and A lebbeck.
MIKROPROPAGASI SUKUN (Artocarpus communis Forst), TANAMAN SUMBER KARBOHIDRAT ALTERNATIF Yati Supriati; Ika Mariska; Sri Hutami
BERITA BIOLOGI Vol 7, No 4 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i4.1049

Abstract

Bread fruit (Artocarpus communis Forst) is one of tropical fruit, which has a high contain of carbohydrate.In certain area, it becomes an alternative staple food when the main staple foods are scarce.The amount of carbohydrate in breadfruit is almost the same with the one in sweet potato, but it is higher than in potato. The main constraint of the development of breadfruit is the limited of seedling availability.Tissue culture technique has been known for its excellent result for plant propagation, because this technique has ability in producing seedling in a large quantity, in uniform growth rate and in a relative short time.The experiment was conducted at Cell Tissue Culture Division, Indonesian Center Agricultural Biotechnology and Genetic Resource Research and Development (1CAB1OGRAD) from February 2003 until December 2004.There were some steps experiments with series of combination medium as treatments. The first steps was shoot multiplication at Sk-2 medium with WPM + BA (0; 0,5; 1,0; 1,5 and 2,0 mg/1) + Thidiazuron (0; 0,4 mg/1);The second step was elongation shoot at Sk-3 with WPM + kinetin (1,2 and 3 mg/1) + GAa(0 and 5 mg/1), and the third was root initiation and proliferation, by comparing WPM + IBA (0, 2, 4 and 6 mg/1) + charcoal (0;0,5 %) and WPM (1; 0,5) + BA (0; 1,5 and 5 mg.l) or NAA (1,2 and 3 mg/1). For the step of acclimatization, soil and compost were used in comparison of (1;1 and 1:2).The result showed that the best media for shoot multiplication of breadfruit was WPM + BA 2 mg/1 + TDZ 0 4 with shoot number of 15,5., while the best media for shoot elongation was WPM + Kinetin 1 mg/1 + GA, 5 mg/1.WPM + IBA 3 mg/1 was the best formula for root proliferation with the highest root number about 6.5 and percentage of shoot producing root about 60%. For acclimatization, soil and compost in combination of 1:1 was the best media for planlet of breadfruit with the success rate about 70%. Charcoal is not necessary in root initiation and proliferation.
HUBUNGAN PANJANG DAN BERAT, FAKTOR KONDISI , FEKUNDITAS, DAN PERKEMBANGAN TELUR IKAN TENGADAK (Barbonymus schwanenfeldii) DARI SAROLANGUN, JAMBI DAN ANJONGAN, KALIMANTAN BARAT, INDONESIA Irin Iriana Kusmini; Jojo Subagja; Fera Permata Putri
BERITA BIOLOGI Vol 17, No 2 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v17i2.3017

Abstract

Tinfoil barb (Barbonymus schwanenfeldii) is one of the potential local fish to be cultivated as a food or pet fish. The data and information of the growth pattern of species are essential for fish farming success. The observation on the length and weight relationship is an usefull indicator to determine the pattern of growth fish observed. This study aims to determine the growth patterns of tinfoil barb fish based on length and weight relationship, condition factor and fish fecundity of tinfoil barb from Sarolangun, Jambi and Anjongan, West Kalimantan. The 30 samples were taken randomly from each group. Data were analyzed using analysis regression Microsoft Excel. The result showed that the regression coefficient of length and weight relationship was 2.811 for Sarolangun and 2.686 for Anjongan. The regression value indicates that the the growth of tinfoil barb was allometric negative, with an average factor condition ranged from 0.99 to 1.002. Length and weight relationship had determinant value (R2) ranged from 0.79 to 0.96, with the fecundity ranged from 20168 to 232.040 eggs from 9–45.5g of gonad weight. 
LINNAEUS DAN SAYA Mien A Rifai
BERITA BIOLOGI Vol 8, No 4(a) (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i4(a).1536

Abstract

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SEBUAH TINJAUAN TENTANG PARASIT TALI PUTRI (Cuscuta spp.) DAN PENGENDALIANNYA Sunaryo Sunaryo
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i6.1208

Abstract

Cuscuta species are parasitic seed plants with twining stems, that coil and fasten to host plants with attachments called haustoria.The Cuscuta stem forms the haustorial coil around the host.Several species of Cuscuta are troublesome parasites on numerous dicotyledonous plants and make eradication and control most difficult. Overall control of Cuscuta is based on mechanical, cultural,chemical and biological methods. Resistant varieties of susceptible crops and biological control are presently of limited importance.Chlorpropham, DCPA, Dichlobenil, and CDEC are soil-applied herbicides that have been used to control Cuscuta in various crops for many years. Nevertheless, integrated control of Cuscula is still considered to be more important.
SIRKULASI VIRUS AVIAN INFLUENZA SUBTIPE H5N1 DI PASAR TRADISIONAL DI JAWA TIMUR TAHUN 2012 Risza Hartawan; NLP Indi Dharmayanti
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.658

Abstract

Avian influenza virus subtype H5N1 outbreak has become endemic in Indonesia since 2003. The disease does not only cause immense economic losses but it also leads to significant fatality of human being. The existence of traditional markets including live bird trading is suspected to play important role in the spreading and evolution of the virus. The objective of this study was to identify the circulation of H5N1 virus at traditional markets of East Java in 2012 by using reverse transcriptase polymerase chain reaction (RT-PCR) test and virus isolation. As results, this study detected the presence of the H5N1 virus circulating in Gresik, Mojokerto, Lamongan and Surabaya in both of live birds and environmental samples. The successfulness of virus isolation indicated a potential transmission to other hosts, including to human. This study suggests that the improvement of the poultry trading system at traditional markets by implementing sanitation, hygiene and biosecurity is necessary to reduce the burden of virus contamination at the market environment.
PERSEBARAN DAN POLA KEPADATAN MOLUSKA DIHUTAN BAKAU Arie Budiman
BERITA BIOLOGI Vol 9, No 4 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i4.2011

Abstract

Mangrove molluscs data collected from some mangrove forest in Indonesia (Sumatra, Kalimantan, Java, Mollucas, and Papua) are used in order to understand the mangrove molluscs distribution and pattern of species abundance. The results of the present study strongly suggest three models (or combination of them) of distribution, i.e. (1) molluscs (especially bivalve) only recruit into certain microhabitat, in wich they reach larger densities; (2) certain species of mollusc may recruit widely, but suffer increase mortality in certain microhabitats; and (3) molluscs(especialy for mobile animals, such as many gastropods) may actively move among macrohabitats, increasing local densities in some of those.The correlation between features of habitat and abundance of molluscs which can be described as preference are discussed.

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