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All Journal Indonesian Journal of Forestry Research Jurnal Penelitian Hutan Tanaman Jurnal Sylva Lestari Indonesian Journal of Forestry Research Forest and Nature
Dida Syamsuwida
Bogor Seed Technolog y Research Institute
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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ECOLOGICAL CONDITIONS AND DISTRIBUTION OF GEMOR TREE SPECIES IN CENTRAL AND EAST KALIMANTAN Adinugroho, Wahyu C.; Sidiyasa, Kade; Rostiwati, Tati; Syamsuwida, Dida
Indonesian Journal of Forestry Research Vol 8, No 1 (2011): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

The aim of this study was to determine the ecological conditions and distribution of gemor bark producing tree species at Tuanan village in Kapuas District, Central Kalimantan Province and Long Daliq village in Kutai Barat, East Kalimantan Province. In order to collect adequate vegetation data, several obser vation plots were laid out by using purposive sampling. Primary and secondary data were collected from the plot areas by obser ving directly the habitat and its ecological condition of vegetation. It was revealed that the gemor tree species tended to grow well on the habitats which have a thin layer of peat (< 2 m), pH 3 – 4 and in a humid climatic condition.  Two gemor bark producing tree species were identidfied in the study areas, namely Nothaphoebe coriacea (Kosterm.) Kosterm. and  N. umbelliflora Blume. The similarity level of vegetation composition at both sites (Kapuas and Kutai Barat Districts) was low. The tree species richness in the plot areas of Tuanan in Kapuas District, Central Kalimantan (82 species, 57 genera and 28 families) was higher than that found in Long Daliq, Kutai Barat District, East Kalimantan (38 species, 26 genera and 19 families).
TEKNIK PENYIMPANAN SEMAI KAYU BAWANG ( Dysoxylum moliscimum ) MELALUI PEMBERIAN ZAT PENGHAMBAT TUMBUH DAN PENGATURAN NAUNGAN Syamsuwida, Dida; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 8, No 3 (2011): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

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PENENTUAN KARAKTERISTIK FISIOLOGIS BENIH KRANJI ( BERDASARKAN NILAI KADAR AIR Pongamia pinnata) Aminah, Aam; Syamsuwida, Dida
Jurnal Penelitian Hutan Tanaman Vol 10, No 1 (2013): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

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Abstract

ABSTRACTPongamia pinnata is one of sources for biodiesel. This study aims to determine physiological and biochemical parameters of seed for planting and biodiesel production. Seed properties were analyzed such as moisture content, germination percentage, biochemical content (protein, starch and electrical conductivity) as well as oil contents. Initial moisture content of seeds was done by means of heat treatment in oven for 24 hours 103OC. Reduction of moisture content of seeds for germination test was conducted by means of incubation for 0, 24, 48 and 72 hours at 35OC. The results revealed the highest germination (92%) was reached at the moisture content of 46.80 % after desiccating for 48 hours. The content of protein and starch were 14.84% and 15.01% respectively and electrical conductivity was 815 millimho. Moisture content for seedling cultivation was 46.8% and for biodiesel was 51.37% with rendemen of 11.47%. The content of fat tended to decrease during desiccation.ABSTRAKKranji (Pongamia pinnata) adalah salah satu jenis tanaman yang berperan dalam menyediakan dua sumber energi yaitu biomassa kayu untuk kayu bakar dan biji mengandung minyak nabati yang dapat dimanfaatkan sebagai sumber biodiesel. Penelitian ini bertujuan untuk mengetahui parameter fisiologis dan biokimia setelah terjadinya penurunan kadar air dalam rangka penyediaan bahan tanaman dan bahan baku biodiesel. Metode yang digunakan untuk pengujian kadar air benih awal adalah pengeringan dengan oven pada suhu 1030C ± 20C selama 24 jam. Perlakuan penurunan kadar air benih dilakukan dengan metode penyimpanan dalam inkubator untuk P1 = 0 jam (kontrol); P2 =24 jam; P3 = 48 jam dan P4 = 72 jam. Parameter yang diamati meliputi kadar air, daya kecambah, kandungan biokimia benih (protein, pati dan Daya Hantar Listrik/DHL) serta rendemen minyak. Hasil penelitian menunjukkan bahwa pengeringan yang tepat untuk bibit kranji adalah 48 jam. Perlakuan ini menghasilkan benih dengan kadar air 46,39%, protein 14,84%, pati 15,01% dan DHL 815 millimho dan daya kecambah 92%. Perubahan biokimia benih kranji selama penurunan kadar air memperlihatkan adanya peningkatan protein dan daya hantar listrik seiring dengan lamanya pengeringan serta penurunan kandungan lemak dan kandungan pati. Berdasarkan perubahan fisiologis dan biokimia yang terjadi, benih kranji memiliki kecenderungan bersifat rekalsitran. Kadar air benih untuk bibit tanaman adalah 48,6% sedangkan untuk produksi biodiesel 51,37% dengan rendemen 11,47%. Kandungan minyak terus menurun selama penurunan kadar air.
DAMPAK PERUBAHAN FISIOLOGI DAN BIOKIMIA BENIH EBONI ( Diospyros celebica Bakh.) SELAMA PENYIMPANAN Yuniarti, Naning; Syamsuwida, Dida; Aminah, Aam
Jurnal Penelitian Hutan Tanaman Vol 10, No 2 (2013): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Peningkatan Produktivitas Hutan

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Abstract

ABSTRACTThe research was objected to determine the impact on biochemical and physiological changes of eboni (Diospyros celebica Bakh.) seeds during storage. Completely randomized design was used in this trial with two treatments, i.e storage room condition and storage periods. The results showed that physiological changes of the seeds during storage decreased their germination percentage and seed moisture content. Biochemical changes as indicated by the increase of fat and protein contents, as well as reduction of carbohydrat content following the period of drying and storage were observed. Storing the seeds in an Air-Conditioned room could keep germination percentages at 61,94% with the moisture content at 46,69% for as long as 8 weeks. Based on physiological and biochemical responses, eboni seeds could be classified as recalcitrant type.ABSTRAKEboni  (Diospyros  celebica Bakh.)  merupakan  jenis  tanaman  yang potensial  untuk dikembangkan  padapembangunan hutan tanaman. Benih bermutu tinggi diperlukan dalam program pengembangan jenis ini dan penyimpanan benih tidak dapat dihindari berkaitan dengan penyediaan benih. Penyimpanan benih eboni ditujukan untuk mempertahankan viabilitas benih agar tetap tinggi. Tujuan penelitian adalah untuk mengetahui dampak perubahan kandungan biokimia dan fisiologis benih eboni selama penyimpanan. Rancangan percobaan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap pola Faktorial dengan perlakuan faktor ruang simpan  dan  periode penyimpanan.  Hasil  penelitian  menunjukkan perubahan  fisiologis benih eboni  selama penyimpanan mengakibatkan adanya penurunan nilai daya berkecambah dan kadar air benih ; perubahan biokimia benih eboni selama penyimpanan menunjukkan adanya peningkatan kandungan lemak dan protein serta penurunan kandungan karbohidrat seiring dengan lamanya pengeringan dan penyimpanan ; penyimpanan benih eboni di ruang simpan AC dapat mempertahankan viabilitas benih selama 8 minggu, dengan daya berkecambahnya hingga 61,94% dengan kadar air 46,69 %. Berdasarkan reaksi fisiologis dan biokimia yang terjadi, maka benih eboni dapat dikatagorikan sebagai benih rekalsitran.
ECOLOGICAL CONDITIONS AND DISTRIBUTION OF GEMOR TREE SPECIES IN CENTRAL AND EAST KALIMANTAN Adinugroho, Wahyu C.; Sidiyasa, Kade; Rostiwati, Tati; Syamsuwida, Dida
Indonesian Journal of Forestry Research Vol 8, No 1 (2011): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2011.8.1.50-64

Abstract

The aim of this study was to determine the ecological conditions and distribution of gemor bark producing tree species at Tuanan village in Kapuas District, Central Kalimantan Province and Long Daliq village in Kutai Barat, East Kalimantan Province. In order to collect adequate vegetation data, several obser vation plots were laid out by using purposive sampling. Primary and secondary data were collected from the plot areas by obser ving directly the habitat and its ecological condition of vegetation. It was revealed that the gemor tree species tended to grow well on the habitats which have a thin layer of peat (< 2 m), pH 3 – 4 and in a humid climatic condition.  Two gemor bark producing tree species were identidfied in the study areas, namely Nothaphoebe coriacea (Kosterm.) Kosterm. and  N. umbelliflora Blume. The similarity level of vegetation composition at both sites (Kapuas and Kutai Barat Districts) was low. The tree species richness in the plot areas of Tuanan in Kapuas District, Central Kalimantan (82 species, 57 genera and 28 families) was higher than that found in Long Daliq, Kutai Barat District, East Kalimantan (38 species, 26 genera and 19 families).
Effects of Storage-Induced Moisture Loss on Germination Performance and Oil Yield of Pongamia pinnata Cahyono, Deddy Dwi Nur; Aminah, Aam; Putri, Atfi Indriany; Syamsuwida, Dida; Danu; Djam'an, Dharmawati; Suita, Eliya; Siregar, Nurma Wati; Nuroniah, Hani Sitti; Lukman, Abdul Haki; Bahanan, Fauzi; Utami, Eka Rachmi Budi
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1026

Abstract

Pongamia (Pongamia pinnata) is a non-food plant that has the potential to be developed as a biofuel because its seeds’ oil content is up to 40%. Therefore, it is necessary to study the characteristics of seeds for germination in relation to mass cultivation and information on oil content as a production consideration. This paper aimed to describe the sensitivity of pongamia seed moisture content to germination and its oil content and also to understand the seed category. Variations in moisture content were obtained from storing seeds at ambient temperature for up to 5 months. Moisture content, morphological characters, oil content, and germination rate were examined for each storage period. Data were analyzed using analysis of variance to determine the treatment effect. The results showed that storing seeds at ambient temperature caused a decrease in moisture content. A decrease in moisture content of 29.36% in the first month’s storage significantly affected the reduction of morphological characters and seed weight. Meanwhile, during the 2–5 months storage period, the decrease in moisture content was only 2–5% and did not affect seed length. Reducing moisture content (MC) increased oil recovery but was not statistically significant. The best germination rate was 84.67%, obtained from fresh seeds (MC of 46.64%); the germination rate decreased as the moisture content decreased during storage. Pongamia should be categorized as an intermediate seed based on the seed moisture content characteristics and germination test results. Keywords: germination, moisture content, oil content, Pongamia pinnata, storage
STUDY ON PRIMING METHODS TO ENHANCE THE VIABILITY AND VIGOR OF TREMA (Trema orientalis LINN. BLUME) SEEDS Yuniarti, Naning; Kurniaty, Rina; Syamsuwida, Dida
Indonesian Journal of Forestry Research Vol. 6 No. 1 (2019): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2019.6.1.69-83

Abstract

Trema is one of tropical forest trees that has many advantages such as wood for building, pulp and charcoal, leaves for medicine and bark for dye material. The constrain of the development of this species is the difficulties of the seeds to germinate and the rapid deterioration of the seeds after being stored. Therefore, there should be a right method to solve the problems. The aim of the study is to determine the proper method of priming to enhance the viability and vigor of trema seeds after storage. Randomized Complete Design was employed in this trial by priming the seeds before and after storage. The treatments werepriming methods including: control (no priming), matriconditioning with ash, osmoconditioning by soaking of 5% H2O2, humidify with water and hydrated-dehydrated process. The observed parameters were thepercentages and speed of germination. The results showed that the treatment method of priming the best for this type of Trema, both before storage and after storage hydration is the treatment of dehydration. Before storage, can increase the value of germination percentage and speed of germination respectively 15% and 0.9% /Etmal. After the storage, treatment hydration dehydration can increase 17% germination and speed of germination of 1.25% / Etmal.
Seed Quality Description of Kilemo (Litsea cubeba (Lour.) Pers.) Suita, Eliya; Nuroniah, Hani Sitti; Lukman, Abdul Hakim; Danu; Cahyono, Deddy Dwi Nur; Aminah, Aam; Syamsuwida, Dida; Nurhasybi; Darwo; Putri, Atfi Indriany; Supatmi
Forest and Nature Vol. 1 No. 1 (2025): January
Publisher : Green Insight Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63357/fornature.v1i1.4

Abstract

Kilemo (Litsea cubeba (Lour.) Pers.), a forest tree species of the Lauraceae family, is naturally distributed in China, Taiwan, and Southeast Asia, including Indonesia. This species is valued for its high-quality essential oils and its potential applications in the biopharmaceutical and chemical industries. However, the semi-recalcitrant nature of kilemo seeds presents challenges in storage and germination, necessitating research to optimize seed quality and propagation methods. This study aims to evaluate the physical and physiological qualities of kilemo seeds sourced from highland regions in West Java and North Sumatra and to determine the best pretreatment methods to enhance germination performance. Seed samples were collected from Ciwidey, Mount Papandayan (West Java), and Aek Nauli (North Sumatra). The study assessed seed moisture content, purity, 1,000-seed weight, and seed viability. Different soaking treatments (plain water, boron solutions, KNO3 solutions, and coconut water) were applied, followed by germination tests under two sowing conditions: open seedbeds and plastic-covered seedbeds. The results indicate that kilemo seeds exhibit moisture content ranging from 13.01% to 14.68%, purity above 96.77%, and a weight of 1,000 seeds varying from 21.36 to 27.86 g. Germination trials revealed that seeds soaked in 100% coconut water for 3 or 6 hours exhibited the highest germination percentages and vigor, particularly in an open seedbed condition. These findings suggest that coconut water pretreatment enhances seed germination and viability, offering an effective method for improving the propagation success of kilemo. The study provides valuable insights into optimizing seed handling techniques to support the conservation and commercial cultivation of this species.
Co-Authors Aam Aminah Abdul Hakim Lukman Bahanan, Fauzi Cahyono, Deddy Dwi Nur Danu Darwo Djam'an, Dharmawati Eliya Suita Kade Sidiyasa Lukman, Abdul Haki Naning Yuniarti Nurhasybi Nuroniah, Hani Sitti Putri, Atfi Indriany Rina Kurniaty Siregar, Nurma Wati Supatmi Tati Rostiwati Utami, Eka Rachmi Budi Wahyu C. Adinugroho