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JURNAL PEMULIAAN TANAMAN HUTAN

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Published by Badan Penelitian dan Penegembangan Kehutanan

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Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

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Articles 249 Documents

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POD PRODUCTION AND HYBRID SEED YIELD OBSERVED IN BREEDING GARDEN OF Acacia mangium x Acacia auriculiformis Sri Sunarti
Jurnal Pemuliaan Tanaman Hutan Vol 2, No 2 (2008): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2008.2.2.221-230

Pod production and hybrid seed yield were observed in breeding garden of Acacia mangium x Acacia auriculiformis. The breeding garden was established in 2006 using 6 selected plus trees from first-generation progeny test of A. mangium and 12 selected plus trees from first-generation progeny test of A. auriculiformis. Based on synchronisation in first phase flowering time (one year of age), there were 6 crossing combinations between A. mangium x A. auriculiformis. Twenty three (23) crosses were done with A. mangium as mother tree. Crosses were practiced by using about 2 spikes for each cross. In the first phase of flowering time, pod production and hybrid seed yield was still low with about 1.87 pod per spike and 2.05 good seeds per pod. This low production is probably due to the low intensity of flowering and lack of male flower in this first phase flowering. In addition, high incompatibility between pistil and pollen among the two different species also affected quality of seed in which about 1.54 seed per pod or 28,75% are poor hybrid seeds. Verification using seedling morphology indicated that almost all collected seed were hybrid seed. This finding showed that anther method without emasculation seemed to be effective to produce hybrid seed of A. mangium x A. auricuiliformis.

PENYEBARAN SERBUK SARI DAN KERAGAMAN GENETIK BIJI YANG DIHASILKAN KEBUN BENIH Pinus merkusii DI JEMBER I. L. G. Nurtjahjaningsih
Jurnal Pemuliaan Tanaman Hutan Vol 2, No 3 (2008): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2008.2.3.263-276

Pollen movement is a critical determinant in population genetic, plays important role in forest tree improvement and conservation genetic. This study was conducted to understand physical pollen movement and to determine seasonal genetic diversity of seed crops in a seedling seed orchard (SSO) of Pinus merkusii, located at Jember, East Java. Physical pollen movements were measured using 25 pollen traps conducted at three flowering seasons i.e. August 2005, November 2005 and March 2006. For offspring populations, seeds were collected at June, September and December that represented mating in each pollen observation season. Then, genetic diversity of the seed crops were analyzed using five microsatellites markers for P. merkusii. Results showed that number of pollen grains was significantly difference among seasons, but insignificant to both trap locations and interaction season-trap locations. The trapped pollen number was low in both August and March, but it was abundant in November. Value of gene diversity of offspring was highest in August (HE = 0.402) compared to other seasons. This study showed that physical pollen movement in the SSO might synchronize, however level of the HE varied among seasons. Seasonal variation in mating status was briefly discussed.

PENGENDALIAN HAYATI PENYEBAB PENYAKIT REBAH SEMAI Fusarium subglutinans DENGAN Trichoderma harzianum M. Christita; S. M. Widyastuti; H. Djoyobisono
Jurnal Pemuliaan Tanaman Hutan Vol 8, No 1 (2014): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2014.8.1.43-55

The mortality of pine seedling in nursery was caused by damping off. Damping off disease is caused by soil borne pathogenic fungus Fusarium subglutinans. To get an effective method in controlling the diseases, is important to understand the effectiveness of biocontrol agent Trichoderma harzianum. The purpose of this research was to comprehend the inhibition mechanism of T. harzianum against F. subglutinans and its effectiveness. The research methods include (1) in vitro application of T. harzianum with Green Fluorescent Protein [GFP] using dual culture method, and (2) in planta application by inoculating T. harzianum with GFP four days before F. subglutinans inoculation, inoculating T. harzianum and F. subglutinans at the same time, and inoculating of T. harzianum four days after F. subglutinans inoculation. The results of this research showed that Trichoderma harzianum is effective to inhibit the growth of F. subglutinans in planta. The mechanism of T.harzianum to inhibit the growh of F.subglutinans is by nutrient competition.

PENGARUH INOKULASI MIKORIZA ARBUSKULAR TERHADAP PERTUMBUHAN BIBIIT DAN INTENSITAS PENYAKIT BERCAK DAUN CENGKEH Ayu Octavia Tanjung Putri; Bambang Hadisutrisno; Arif Wibowo
Jurnal Pemuliaan Tanaman Hutan Vol 10, No 2 (2016): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

The potential of arbuscular mycorrhiza fungi on the growth of clove seedling and leaf spot intensity. This researches aims to assess the ability of arbuscular mycorrhiza (AM) fungi in growth and suppress the intensity of leaf spot disease on clove seeds. The experiment was arraged in completely randomized design (CRD) 2 x 2 factorial. The treatments examined were: without mycorrhiza and compost (M0P0), without mycorrhiza and with compost (M0P1), with mycorrhiza and without compost (M1P0), and with mycorrhiza and compost (M1P1). The observed variables were the clove seedlings height, leaf numbers, symptom and intensity of leaf spot disease, and detection of salicylic acid (SA) with thin layer chromatography (TLC). The result showed that aplication of AM Fungi (M1) to clove seedlings support clove growth and dicreased intensity of leaf spot disease, but there was no interaction between mycorrhiza and composting in all observation variables. Salicylic acid contained in all treatment were tested.

Keragaman pertumbuhan uji keturunan jati (Tectona grandis L.F) umur 5 tahun di Ciamis, jawa Barat Yayan Hadiyan
Jurnal Pemuliaan Tanaman Hutan Vol 3, No 2 (2009): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

In Indonesia the demand of genetically improvement seed of teak has been increasing due to the expansion of teak plantation, while the availability of high quality seed from seed orchard is very limited. A porgeny test of teak at Ciamis West Java that will be converted into a seedling seed orchard is planned to produce improved seed. The trial is laid out in Randomized Complete Block Design (RCBD), consisting of 160 families, 4 treeplots and 10 blocks. The objective of this research is to assess the growth and its variation among the families tested at 5 years old. The best tree height (12 m) was achieved by several seed sources, while the best diameter (14.6 cm) and volume increament (27.21 M3/ha/years) was from Ciamis local seed source. Family affected diameter and volume growth significantly, but not for tree height. Individual tree heriability for stem diameter was low (0.09), while that for stem volume was moderate ().10). The genetic correlation between height and diameter was strong (rg=0.84).

PARAMETER GENETIK PADA UJI KLON JATI (Tectona grandis L. F) UMUR 5,5 TAHUN DI SUMATERA SELATAN Imam Muslimin; Agus Sofyan; Syaiful Islam
Jurnal Pemuliaan Tanaman Hutan Vol 7, No 2 (2013): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2013.7.2.97-106

The objectives of study were to ascertain the level of genetic variation, and to estimate heritability and expected genetic gains in tree height, diameter and volume of teak clonal test. Thirty five clones were tested at KHDTK Kemampo, South Sumatra. At 5.5 years of age there were genetic variations among clones in tree height and diameter, but the variation was relatively low. The mean height and diameter were 11.53+2.15 m and 12.85+2.73 cm respectively. The contribution of the genetic component to total variation was relatively low, namely 5.39 %, 4.20 % and 6,96% for height, diameter and volume respectively. Individual broad sense heritabilities were 0.06, 0.05 and 0.07 for height, diameter and volume respectively, while broad sense heritabilities on clone mean level were 0.33, 0.26, and 0.29 respectively for tree height, diameter and volume. By selecting the best ten clones, the expected genetic gains for height, diameter and volume were 3.12%, 2.80 % and 10.65%, respectively. Genetic correlation between height and diameter was 1.01.

MODEL PERTUMBUHAN TEGAKAN HUTAN ALAM BEKAS TEBANGAN DENGAN SISTEM TEBANG PILIH DI PAPUA Relawan Kuswandi
Jurnal Pemuliaan Tanaman Hutan Vol 11, No 1 (2017): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Sustainable forest management recently calls for growth information concerning integrated functions of ingrowth, upgrowth and mortality. This study was conducted in logging concessions of PT. Tunas Timber Lestari (TTL), PT. Wapoga Mutiara Timber (WMT) dan PT. Manokwari Mandiri Lestari (MML) in Papua. Then, this research was intended to build growth stands models in logged over forest. The data were obtained from permanent sample plots (PSPs) in three logging concession in Papua forest. Results revealed that characteristics of stand namely basal area, stem density and diameter had significant coefficients to model of ingrowth, upgrowth and mortality in each logging concession. Specifically, PT WMT showed the highest value of coefficient of determination (>80%, P<0.05). For PT MML only had significant model namely ingrowth and upgrowth model while PT TTL only shwed ingrowth model as significant equation.

TANGGAPAN PERTUNASAN EMPAT VARIETAS LOKAL, SUKUN TERHADAP PEMANGKASAN DAN PEMUPUKAN NPK Dedi Setiadi; Hamdan Adma Adinugraha
Jurnal Pemuliaan Tanaman Hutan Vol 3, No 3 (2009): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2009.3.3.147-154

The Study was conducted to examine the sprouting response of four local varieties of bread-fruit to pruning and application of NPK fertilizer. Four local varieties of bread-fruit namely from bone, Banten, Sukabumi and Kediri. The experiment lay out was Randomimized Complete Design with 3 treatment factors. The result did not show significant difference among local varieties. However there are significant differences in budding response . For number of buds. Best treatment was fertilization 20 g and pruning at 50 cm. For buds growth, best treatment was NPK of 30-50 g, and best pruning at 20 and for bud diameter the best NPK dosage was 20 g.

PENGARUH ABU VULKANIK PADA PERTUMBUHAN, LUAS SERANGAN DAN INTENSITAS SERANGAN KARAT TUMOR PADA SEMAI SENGON Siti Husna Nurrohmah; Agus Wahyudi; Liliana Baskorowati
Jurnal Pemuliaan Tanaman Hutan Vol 8, No 2 (2014): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

The study aimed to examine the effect of volcanic ash on growth, disease incidence and severity of gall rust on sengon seedlings. Treaments were used compound af volcanic ash and planting medium with the comparison of 0:4 (M1), 1:3 (M2), 1:1 (M3), 3:1 (M4) and 4:0 (M5). Growth parameters including height, number of leaves, and the level of chlorophyll were measured. Artificial inoculation using fresh spore of Uromycladium tepperianum were applied 3 times: at the first, fourth and seven days after the second leaves of seedlings emerged, then the gall rust disease symptom were scored weekly for a month. The results showed that seedlings exhibited treatment M1 and M2 more optimal growth than the others. However, sengon with higher concentration volcanic ash performed the slowest growth compared to other treatments. Disease incidence and severity were ranged of 0-80% and 0-24%. Seedling sengon with treatment M2, M3 and M5 emerged the symptoms of gall rust however, seedlings with treatments of M1 and M4 did not show the symptomps.

VOLUME TEGAKAN Acacia mangium PADA UJI PEROLEHAN GENETIK DENGAN KERAPATAN TEGAKAN TINGGI Dwi Kartikaningtyas; Teguh Setyaji; Arif Nirsatmanto
Jurnal Pemuliaan Tanaman Hutan Vol 11, No 2 (2017): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

High initial stand density is commonly practiced in forest plantations subjected to produce high quality logs through successive thinnings. In this study, genetically improved seed of Acacia mangium was verified in genetic gain trial using high initial stand density. The trial was established in Jonggol, West Java and laid out in randomized complete block design with high initial stand density of 2500 trees/ha or in spacing of 2 x 2 m. The improved seeds tested in the trial were collected from four seedling seed orchards (SSOs). As a control, unimproved seeds from seed production area (SPA) were also planted together in the trial. The assessment of stand volume productivity was periodically conducted at two, three and four years of age. The results of study showed that the improved seeds from the four SSOs out performed the unimproved one. However, the significant difference among the seed sources was initially found at the four years of age. The average stand volumes of improved seed were 58.56m3/ha, 94.87m3/ha and 163.8m3/ha for two, three, and four years of age, respectively. The superiority of improved seed over the unimproved one ranged from 23%-36% (two years), 6%-30% (three years) and 2%-22% (four years). The four SSOs showed different behaviours in response to high stand density. Improved seed from SSOs with higher selection intensity was likely to be more tolerant to high stand density.

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