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All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI FORESTA BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL PEMULIAAN TANAMAN HUTAN AGRIVITA, Journal of Agricultural Science Journal of Tropical Biodiversity and Biotechnology Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat ANNALES BOGORIENSES Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Teknik Mesin Indonesia JESBIO : Jurnal Edukasi dan Sains Biologi ALMUJTAMAE: Jurnal Pengabdian Masyarakat Jurnal Sylva Lestari Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan Jurnal Pengabdian Pada Masyarakat Policy Brief Pertanian, Kelautan, dan Biosains Tropika Journal of Fisheries & Marine
Ulfah Juniarti Siregar
Departement Of Silviculture, Faculty Of Forestry And Environment, IPB University, Bogor 16680, Indonesia
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ADAPTABILITY OF WHITE JABON (Anthocephalus cadamba MIQ.) SEEDLING FROM 12 POPULATIONS TO DROUGHT AND WATERLOGGING Sudrajat, Dede J.; Siregar, Iskandar Z.; Khumaida, Nurul; Siregar, Ulfah J.; Mansur, Irdika
AGRIVITA, Journal of Agricultural Science Vol 37, No 2 (2015)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

 The study was carried out for investigation of the adaptability of white jabon seedlings from 12 populations to drought and water logging stresses in a controlled green house. The results showed that the adaptive responses of white jabon seedling to drought and waterlogging stresses were affected by genotype (population). The drought and waterlogging stresses significantly inhibited plant growth, biomass accumulation and allocation, leaf area, also decreased chlorophyll content, increased carotenoids contents, and accumulated free proline. Relative water content and specific leaf area tended to be higher in waterlogging and declined in drought stresses.  The result clearly indicated that white jabon seedlings were more adaptive to waterlogging than to drought stresses. Moreover, there were different responses to drought and waterlogging stresses between the twelve populations. Kampar, Gowa, Kuala Kencana and OKI populations exhibited higher growth performance and stress tolerance index to be adapted to waterlogging stress, while Gowa, Pomalaa and Kampar populations had relatively better growth performance in the drought stress. Keywords: Anthocephalus cadamba, genotype, growth, population, stress tolerance index 
SISTEM PERKAWINAN BAKAU BANDUL (Rhizophora mucronata Lamk) BERDASARKAN ANALISIS ISOZIM Hamzah, Hamzah; Siregar, Ulfah J.; Siregar, Chairil Anwar
Jurnal Penelitian Hutan dan Konservasi Alam Vol 6, No 2 (2009): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

ABSTRAK Derajat perkawinan silang bakau bandul (Rhizophora mucronata Lamk.) dari beberapa pohon induk yang tumbuh di hutan alam Sumatera, yaitu Sumatra Utara, Riau, Jambi, dan Jawa, yaitu Muara Angke dan Ujung Kulon, diduga menggunakan isozim. Enam sistem enzim dicobakan dalam penelitian ini, masing-masing AAT, ADH, EST, IDH, MDH, dan PER. Hasil penelitian menunjukkan bahwa bakau bandul memiliki sistem perkawinan campuran, dengan perkawinan sendiri sebagai sistem perkawinan utama, karena perkawinan silang hanya berkisar antara 6-32%. Populasi-populasi pada hutan yang tidak mengalami kerusakan berat (Sumatera Utara, Jambi, dan Ujung Kulon) memiliki derajat perkawinan silang lebih tinggi (32%, 17%, dan19%) dibandingkan dengan populasi-populasi yang hutannya mengalami kerusakan berat (Riau dan Muara angke) yang besarnya masing-masing adalah 13% dan 16%. Rasio polen(serbuk sari) dan ovule(sel telur)beragam antar  lokus  dan  alel,  tetapi  menunjukkan pembentukan gamet  jantan  dan  gamet  betina  yangberimbang. Bakau bandul walaupun cenderung untuk selfing(menyerbuk sendiri), tidak memiliki sistem perkawinan berpilih (F = - 0,197), karena setiap alel pada ovule dan polen dari pohon-pohon bakau bandul yang berlainan berasosiasi secara acak. Angin dan serangga tampaknya berperan penting terhadap terjadinya penyerbukan silang. 
BIOMASA HUTAN RAWA GAMBUT TROPIKA PADA BERBAGAI KONDISI PENUTUPAN LAHAN Jaya, Adi; Siregar, Ulfah J.; Daryono, Herman; Suhartana, Sona
Jurnal Penelitian Hutan dan Konservasi Alam Vol 4, No 4 (2007): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

ABSTRAK Lahan gambut tropika memiliki fungsi sangat penting yang terkait dengan masalah konservasi, terutama fungsi simpanan dan rosot karbon, yang mempengaruhi perubahan iklim global. Namun, lahan gambut mengalami berbagai  tekanan  dari  penggunaan lahan  yang  beragam termasuk pembangunan kehutanan, drainase  pertanian,  energi,  dan  hortikultura.  Tujuan  penelitian  ini  yaitu  untuk  mendapatkan  informasi biomasa hutan gawa gambut tropika terutama di Kalimantan Tengah pada berbagai kondisi penutupan lahan. Penelitian pada biomasa rawa gambut dilaksanakan pada beberapa jenis penutupan lahan yaitu hutan rawa gambut primer, hutan bekas tebangan, dan kawasan bekas terbakar. Metode destruktif diterapkan pada tiga petakan berukuran 10 x 10 m2. Contoh masing-masing bagian vegetasi seperti batang, cabang, ranting, dan daun diambil untuk analisis kadar air. Hasil penelitian menunjukkan bahwa ada suatu perbedaan biomasa di atas permukaan tanah yang nyata antara hutan rawa gambut yang relatif masih baik, hutan bekas tebangan, dan kawasan terbakar. Rata-rata jumlah biomasa adalah antara 400-900 ton/ha untuk hutan rawa gambut yang relatif masih baik, 240-400 ton/ha untuk hutan bekas tebangan,  210-460 ton/ha untuk kawasan bekas kebakaran tahun 1997, dan antara 15 hingga 21 ton/ha untuk kawasan yang dua kali mengalami kebakaran.
Optimization of Somatic Embryogenesis Induction of Cassava (Manihot esculenta Crantz) Susanti, Idha; Suharsono, Suharsono; Widyastuti, Utut; Siregar, Ulfah Juniarti; Tjahjoleksono, Aris
ANNALES BOGORIENSES Vol 21, No 2 (2017): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ab.v21i2.223

Abstract

The embryogenesis (SE) has important role for genetic engineering of cassava (Manihot esculenta Crantz). However, the success of SE induction depend on plant growth regulator s (PGR)s and treatment enriched in induction media.  This experiment tried to induce callus formation of cassava from several in vitro explants: immature leaf, apical bud, and internode; and to develop somatic embryogenesis of cassava in several media enriched with tyrosine and copper sulphate (CuSO4) added into media enrich with picloram as treatment.  Different response of explants source to callus induction treatment from those three varieties in callus induction as well as friable callus formation were found in this experiment. The best medium to induce varied with variety; MS media supplemented 12 mg/L picloram + 0.5 mg/L CuSO4 was the best for “Adira 4” and  half MS and half GD media supplemented 12 mg/L picloram + 100 mg/L tyrosine for “Malang 6”.  All treatments resulted somatic embryo which developed indirectly and in morphologically normal somatic embryos
Distribution of Pine Woolly Adelgids Infestation on Pinus merkusii Plantation in Java Oemijati Rachmatsyah; Ulfah Juniarti Siregar; Noor Farikhah Haneda; Dodi Nandika; Purnama Hidayat
Jurnal Manajemen Hutan Tropika Vol. 18 No. 3 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Pine woolly adelgid is a recently found exotic pest attacking seedling up to grown plants of Pinus merkusii plantations forest. Since its discovery, there were not much information about it. The objectives of this research were to study pine woolly adelgids distribution, symptoms and indicators, and its scale of infestations on Pinus merkusii plantation in Java, to determine the presence of any specific P. merkusii sites invaded by pine woolly adelgids, considering the pests were native to boreal and temperate areas. Hypothesis was pine woolly adelgids infestation on P. merkusii in Java is consistent with their native distribution. There were 9 Forest Management Unit (KPH) with infested P. merkusii plantations which were located at altitude between 900 to 1,700 m asl. with temperature ranging 16-22 °C and air humidity 80-90%. This indicated that Pine Woolly Adelgids required low temperature to survive, which was consistent with their original distribution. Host preference with regard to scale of infestation was closely related to temperature, altitude, and number of trees per hectare. The scale of infestation varied among regions, from light to heavy infested/death of trees.
Rarity Status and Habitat of Shorea laevis and Shorea leprosula in Muara Teweh, Central Kalimantan Sri Wilarso Budi; Iskandar Zulkarnaen Siregar; Ulfah Juniarti Siregar; Andi Sukendro; Prijanto Pamoengkas; Tedi Yunanto
Jurnal Manajemen Hutan Tropika Vol. 18 No. 2 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Forest exploitation and conversion to other landuse may cause lost of biodiversity, including most important dipterocarp trees species, i.e. Shorea leprosula and Shorea laevis. The objective of this study was to determine the rarity status of the two important shorea species, i.e. S. laevis and S. leprosula, based on IUCN criteria, their habitat characteristics, and their association with other species, as one of the basis for determining their conservation strategy as a part of forest management. This study was conducted in three types of ecosystem (virgin forest, secondary forest, and fragmented forest) in Muara Teweh, Central Kalimantan. Methodology used in this research includes vegetation and tree diversity analysis. Study results showed that both S. laevis and S. leprosula were included within category of “low risk” in the 3 types of ecosystem in the forest area being studied. Habitat characteristics which determined the absence of S. laevis in the virgin forest habitat was the soil permeability which was too low, whereas other soil chemical and physical properties in the three types of ecosystems were relatively similar. Presence of S. laevis were positively associated with species of S. uliginosa, Dialium platysepalum, Dipterocarpus ibmalatus, Palaquium rostatum, Vatica rasak, Adinandra sp., and Memecyclon steenis. On the other hand, S. leprosula were positively correlated with S. kunstleri, Castanopsis sp., Shorea sp., Quercus bennettii, Castanopsis argentea, and D. hasseltii.
Life Cycle Assessment of Wood Pellet Product at Korintiga Hutani company, Central Kalimantan, Indonesia Iswanto; Dodik Ridho Nurrochmat; Ulfah Juniarti Siregar
Jurnal Manajemen Hutan Tropika Vol. 27 No. 3 (2021)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.27.3.200

Abstract

Climate change has forced human being to adapt in fulfilling their energy needs sustainably. In Indonesia, forestry activities has been considered as an emission rather than carbon sink. This study aims to analyze the inputs, outputs, and potential environmental impacts of wood pellet production in a forest company using life cycle assessment (LCA). The wood pellet is made from Eucalyptus pellita plantation. Analysis was made for 1 planting cycle or 6 years, and allometric equations were used to estimate the ability of industrial timber plantation forest to absorb CO2. Production of wood pellet starting from plantation requires inputs as follows: diesel fuel, electricity, NPK and other fertilizers, pesticides, and electrical energy. Those inputs produced emissions, of which the largest was N2O of 551.2927 kg, followed by NH3 of 7.5275 kg generated from NPK fertilizer. Another was PO43- amounted at 0.1792–0.2229 kg from liquid fertilizers and pesticides. Potential acidification came from 13.3675 kg SO2 eq, and eutrophication of 0.4021 kg PO43- eq. The greenhouse gas (GHG) emission was 678.0270 kg CO2 eq from the plantation activities, especially from diesel-based energy consumption, while wood pellet mills only released 0.1053 kg CO2 eq of GHG emissions. Thus, total emissions from 6 years' time of wood pellet production are much lower compared to the average CO2 absorbed by the plantation forest, of which annually is 36.34–67.69 ton ha-1year-1.
Phenotypic and Genetic Diversity Evaluation of Sengon (Falcataria moluccana (Miq.) Barneby & JW Grimes) from Solomon Provenance on Progeny Trial in Cirangsad Experimental Forest, West Java Fifi Gus Dwiyanti; Iskandar Zulkarnaen Siregar; Ulfah Juniarti Siregar
Jurnal Manajemen Hutan Tropika Vol. 27 No. 3 (2021)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.27.3.174

Abstract

Initial evaluation of phenotypic variability and genetic diversity was conducted on the progeny test of 2 years-old sengon from Solomon provenance, which derived from nine families of mother tree and were then planted in 4 blocks in the Cirangsad Experimental Forest. Phenotypic assessment on eight traits was conducted on 36 trees using a scoring system, while genetic diversity of 15 selected individuals which represented high and low-score phenotypic traits was analyzed using 5 selected RAPD primers. The result on phenotypic assessment showed that family 3 (57.25 points) has the highest average score of phenotypic quality and family 4 has the lowest average score (7.50 points). Furthermore, genetic analysis showed that the low-scoring sengon population had a greater mean genetic diversity (He = 0.2535) than the high-score population (He = 0.2345). The analysis of molecular variance (AMOVA) revealed a significant genetic differences (p-value < 0.001) among high and low-score populations and the dendrogram of genetic distance revealed clustering of individuals having similar superior phenotypic against those having non-superior, indicating the selection based on phenotypes in this study had succeeded in pooling the good quantitative alleles in the selected population. This evaluation results can be used as a reference in determining the best families to produce superior sengon (from Solomon provenance) offspring in the future that have desired adaptability, productivity, and diversity.
Pengembangan metode penanda genetika molekuler untuk lacak balak (studi kasus pada jati) Iskandar Z. Siregar; Ulfah J. Siregar; Lina Karlinasari; Tedi Yunanto
Jurnal Ilmu Pertanian Indonesia Vol. 13 No. 2 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Tracking timber on teak and teak wood products can be conducted using different methods, such as DNA finger printing, chemical composition of the wood, Near Infra Red spectra (NIR) and stable isotopes. Samples were collected from wood material and leaves in Java (9 Forest Management Units district) of Perhutani to determine: i) pattern of genetic variation within and among populations, ii) to determine the protocol for DNA extraction from wood, and iii) to study the feasibility of DNA marker for timber tracking in the field. Results show that: i) genetic variation of cpDNA (PCR-RFLP) is low, while RAPD variation is moderate, ii) there are differences in chemical composition of wood among the Forest Management Units (FMUs) of Perhutani, iii) variation of isotopic carbon and oxygen in Central and East Java were higher than from of West Java, iv) absorbtion intensity of NIR in West Java was higher than for Central and East Java, and iv) testing of DNA marker showed that genetic structure in the forest site is not significantly different from that in log yards, indicating that the timber flow is still according to the procedure. RAPD marker also is able to determine the origin of illegal timber and wood in industry without clear identity. Keywords: genetik marker, teak, timber tracking
Leaf Morphology Traits of Shorea spp in Ex-Situ KHDTK Haurbentes Henti Rosdayanti; Ulfah Juniarti Siregar; Iskandar Z. Siregar
Media Konservasi Vol 24 No 2 (2019): Media Konservasi Vol. 24 No. 2 Agustus 2019
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.529 KB) | DOI: 10.29244/medkon.24.2.207-215

Abstract

Shorea is a genus of the Dipterocarpaceae family which shows high economic and ecological values. Currently, market demand for wood is still met from natural forests that are degrading due to over exploitation. The degraded forests are included in the rehabilitation program that require significant number of planting stocks, mainly from seedlings or wildlings. Correct species identification of planting stocks, particularly wildlings, is an important first step in planting activities and it is relevant with Shorea spp planting stocks due to leaf morphology traits. This study was aimed to examine the traits of leaf morphology of four Shorea species for easy field identification. Samples were taken from five trees for each species. Morphological trait identification was conducted by leaf  observation and measurement. The results showed that all four species had the same apex shape. Six of the twelve morphological characteristic of the variable character can influence the morphological characteristics of the leaves, namely the roving leaf, leaf area, leaf length, aspect ratio, form factorand perimeter ratio of diameter. S. leprosula is similar to S. parvifolia, while S. ovalis is similar to S. guiso. Shorea leaf  character S. parvifolia differentiated from S. leprosula, while Shorea ovalis similar to Shorea guiso. The LP variable (length from the base of the leaf to the widest point of the leaf) is a variable that can be used as aleaf morphological characteristic of the four Shorea which are compared because each one has a different value. S. ovalis has the highest LP value, followed by S. guiso and S. leprosula, while S. parvifolia has the lowest LP value. Keywords: apex shape, identification, leaf morphology traits, Shorea
Co-Authors Adam, Satria Adi Jaya, Adi Adisti Permatasari Putri Hartoyo Aditya Nugroho Aditya Nugroho Aditya Nugroho Agus Kholik Agus Setiyono Ahmad Faqih Andi Sukendro Anita, Vilda Puji Dini Arief Budiman Arief Budiman Arif Kurnia Wijayanto Ario Damar Aris Tjahjoleksono Bayu Winata Bayu Winata, Bayu Cartealy, Imam Civi Chairil Anwar Siregar Chairil Anwar Siregar Chairil Anwar Siregar Dede J Sudrajat Dede J Sudrajat Dede J. Sudrajat Dede J. Sudrajat Dede Jajat Sudrajat Dede Jajat Sudrajat DEDE SUDRAJAT Deden D. Matra Deden Derajat Matra DIMAS ANDRIANTO Djiono Djiono Djufri Djufri Dodi Nandika Dodik Ridho Nurrochmat Eko Agus Suyono Eko Agus Suyono Erdy Santoso Esti Nurianti Esti Nurianti Evy Damayanthi Farosandi, Naufal Hilmi Fifi Gus Dwiyanti Fitta Setiajiati Hamzah, Hamzah Hartati Hartati Hartati, N Sri Hasim Hasyyati Shabrina Henti Rosdayanti Herman Daryono Herman Daryono I Made Mayun Maha Diputra I Wayan Windra Nugraha Idha Susanti Idha Susanti Idqan Fahmi Imam Wahyudi Indrawan, Imam Wahyudi IPB, DGB Irdika Mansur Iskandar Z Siregar Iskandar Z. Siregar Iskandar Z. Siregar ISKANDAR ZULKARNAEN SIREGAR Istikorini, Yunik Iswanto Jumadin Sidabutar Lala M Kolopaking Laura Flowrensia Lilik Maslachah Lina Karlinasari Lucia Tri Suwanti, Lucia Tri M Agus Setiadi M Iqbal Maulana Ginting M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Ma'mun Sarma Madani, Hilmi Naufal Mahendra Pujiyanto Matra, Deden Derajat Mochamad Donny Koerniawan Mochammad Donny Koerniawan Mohammad Basyuni N. Sri Hartati Nahrowi Noor Farikhah Haneda Noor Farikhah Haneda Nurhasybi Nurhasybi Nurianti, Esti Nurul Khumaida Oemijati Rachmatsyah Oktariza, Wawan Pramisari, Yunita Pramisasi, Yunita Prijanto Pamoengkas PURNAMA HIDAYAT Purwiyatno Hariyadi Puti Awali Saimima Ramadhan, Rafli Ranny Dwita Olivia Rifana, Haikal Zaky rima siburian Rita Rahmawati Roisatuz Zakiyah Satriawan, Handi Sona Suhartana Sona Suhartana Sri Purwaningsih, Sri Sri Wilarso Budi Suci Rahayu Sudradjat Sugianto Sugianto Suharsono Suharsono Suharsono Suharsono Sumiati Supatmi Supatmi Suria Darma Tarigan Syamsidah Rahmawati, Syamsidah Tedi Yunanto Tedi Yunanto UTUT WIDYASTUTI Utut Widyastuti Vilda Puji Dini Anita Widiyatno, Thomas Valentinus Wirrahma . Zhaza Afililla Zidan, Mochammad