Dede J. Sudrajat

• Dr. (Tropical Silviculture)
• Researcher at National Research and Innovation Agency

Iron (Fe) is a trace element and metal crucial to plant growth and development. However, it can become toxic at high concentrations, potentially harming plants. Information related to the tolerance or sensitivity of forest plants to Fe exposure can be the basis for selecting species to be planted on land with high Fe content. This study aims to det...

Malapari has great potential to produce biofuel, and is known as an energy source plant that many stakeholders are developing. The Malapari planting program needs information related to germination and how to produce seedlings that are ready for planting, have vigor, and can adapt to the planting area. This research aims to determine the effect of...

Red jabon (Neolamarckia macrophylla (Roxb.) Bosser) is a fast-growing tree species with potential in urban forest development. Reducing air pollution is a significant problem for communities, and the red jabon shows potential for growth and absorption. Growth evaluation of progeny testing is needed to select the optimum family for urban forest deve...

The availability of appropriate methods to increase germination capacity (GC), thereby increasing the growth and vigor of seedlings in the nursery, plays an important role in the success of tree planting in industrial plantation forests. The aim of this research was to determine the effect of scarification and plasma fine bubbles (PFBs) treatments...

Rencana rehabilitasi tanaman hutan membutuhkan benih dan bibit dalam jumlah besar. Pemenuhan kebutuhan bibit dapat diperoleh melalui sertifikasi benih tanaman hutan. Penggunaan benih bersertifikasi juga dapat meningkatkan produktivitas tanaman sehingga hasil panen memiliki nilai ekonomi yang lebih tinggi. Salah satu sumber benih dan bibit tanaman h...

BACKGROUND AND OBJECTIVES: Falcataria moluccana is a potential forest tree species with high economic value in indonesia, and it is widely planted in various forests and landscape restorations. The planting of F. moluccana has experienced a decline in productivity attributed to a reduction in site quality and heightened susceptibility to pest and d...

To cite this paper: Sudrajat DJ, Yulianti, E Rustam, N Widyani, KP Putri, RU Damayanti, Nurhasybi, E Suita, YMMA Nugraheni, V Yuskianti (2024). Early growth comparison of the fast-growing tree species in mixed-species plantation planted with agroforestry and biofertilization. Intl J Agric Biol 31:344-354 Abstract This field study was conducted to e...

Endophytic fungi are one of the forest microbes that can be solutions for increasing the resistance of forest plants to environmental stress. Exploration and collection of endophytic fungi from the forest is important because the condition of the forest as a natural habitat for microbes has been disturbed due to degradation and deforestation. A pot...

The aim of this study was to identify the morpho-physiological diversity of seeds in several mother trees of N. orientalis at 6-year-old in a seedling seed orchard in Parungpanjang, Bogor and to identify the effectiveness of seed sortation in improving the seed germination. A total of 17 mother trees were collected for their fruit, measured the mor...

This research is an alternative technology to support a green economy for environmental sustainability. This paper was performed to reveal the relation between seed briquettes inoculated with the fungi of arbuscular mycorrhiza (AMF) and dark septate endophytes (DSE) in direct seeding of C. pentandra and L. leucocephala seedlings on marginal land in...

Sengon merupakan tanaman kehutanan yang banyak digemari oleh masyarakat dan sedang berusaha dikembangkan oleh Kesatuan Pemangkuan Hutan (KPH) Banten. Upaya KPH Banten untuk mulai mengembangkan sengon perlu didukung dengan mengadakan pelatihan mengenai pemuliaan pohon dan teknologi perbenihan. Pelatihan mengenai pemuliaan pohon dan teknologi perbeni...

Anna N, Siregar IZ, Supriyanto, Sudrajat DJ, Karlinasari L. 2023. Physical, mechanical, and anatomical properties of 12 jabon (Neolamarckia cadamba) provenances wood in Indonesia. Biodiversitas 24: 5895-5904. Jabon is a raw wood material for paper industries and has a fast-growing ability. Comprehensive information on the fundamental qualities of w...

2023): Improvement of seedling quality of red jabon (Neolamarckia macrophylla (Roxb.) Bosser) through seed sowing techniques and seed invigoration, Forest Science and Technology, ABSTRACT Red jabon (Neolamarckia macrophylla) is one of potential tree species, but there are some problems in its cultivation. Intermediate seed character and very small...

Direct seeding, a planting technique that has long been applied in restoring degraded land and forest, is often doubted to be successful due to many constrains, both biotic and abiotic. This study aims to increase the success of direct seeding through the application of seed briquettes, aquasorb treatment and determining the right sowing time for t...

Arrowroot (Maranta arundinacea) is an herbaceous plant that is widely grown under the shade of trees and has the potential to be cultivated as a source of food, medicine, feed, fibers, biopolymers, and biopolymer composites industries. The purpose of the research was to identify the growth, tuber yield, and starch content of arrowroot accessions pl...

Container and bare-root seedlings are the two basic stock types used in reforestation programs in many countries, but in the tropics, bare-root seedlings have never been widely applied. The objective of this research was to assess the possibility of bare-root seedlings for tropical forest and landscape restoration treated by fertilization in the nu...

Seedling growth in the nursery and early field performance of three fast-growing tree species from the Rubiaceae family, i.e., white jabon (Neolamarckia cadamba), red jabon (Neolamarckia macrophylla, and gempol (Nauclea orientalis), were tested by using different seedling media and arbuscular mycorrhizal fungi (AMF) treatments in the nursery and mi...

Gamma irradiation treatments have commonly been applied to induce variation in plant genetic improvement programs. The improvement of nyawai (Ficus variegata Blume) is urgently needed mainly to break the seed dormancy, increase seedling growth, and induce variation for selecting desired traits. This research aimed to assess the effect of gamma irra...

Community forests play significant role in supplying national demand of woods, sustaining local ecosystem and increasing benefit for local community. Tree plantings for both community forests and rehabilitation of degraded forests and lands, however often neglect utilization of good quality seeds, which resulted in low quality of forest plantation....

Seedlings that are capable of symbiosis with soil microorganisms are the potential to increase the seedling survival in degraded or critical land. Balsa (Ochroma pyramidale) is one of the potential plants to be used in land rehabilitation and revegetation. Completely Randomized Design (CRD) was used in this study with 8 (eight) types of stimulants...

The failure of planting in the field is due to the fact that the seedling of forest plant species is not able to adapt to drought stress and inundation. The study is aimed to evaluate: (1) the influence of environmental stress and species on the morphology of tree seedlings, and (2) the influence of environmental stress and species on the sensitivi...

Benuang laki (Duabanga moluccana) is a potential fast-growing tree species to be developed in plantation forests, community forests, and land rehabilitation. This species has a very fine seed size that requires special treatment in germination, both in testing activities in the laboratory and operational activities in the nursery. The purpose of th...

Sudrajat DJ, Rustam E, Widyani N. 2022. Provenance variation in seed storability of jabon (Neolamarckia cadamba) and their response to seed invigoration by priming and gamma irradiation treatments. Biodiversitas 23: 5074-5084. Jabon (Neolamarckia cadamba (Roxb.) Bosser) is a tree species native to Indonesia with a wide growth distribution and high...

Tuheteru FD, Husna, Albasri, Arif A, Basrudin, Nurdin WR, Arman E, Agustin DI, Saribadu J, Rahmat, Dermawansyah A, Daliana, Lody LP, Deri AS, Safitri I, Sudrajat DJ. 2022. Effect of pre-sowing treatment on the germination and early growth of Kalappia celebica Kosterm.: an endemic and vulnerable tree species of Sulawesi, Indonesia. Biodiversitas 23:...

Indonesia has 14 million ha of degraded and marginal land, which provides very few benefits for human well-being or biodiversity. This degraded land may require restoration. The leguminous tree Pongamia pinnata syn. Milettia pinnata (pongamia) has potential for producing biofuel while simultaneously restoring degraded land. However, there is limite...

Ultrafine bubbles and low doses of gamma irradiation had a positive effect on seed germination. This research tested the effectiveness of ultrafine bubbles (UFB) water and gamma irradiation for improving the viability and vigor of Albizia chinensis (Osbeck) Merr. seeds that had been stored for four years. A completely randomized two-factor experime...

Mindi (Melia azedarach Linn., family Meliaceae) is a multipurpose forest tree species such as for furniture, vinier and plywood, otherwise the leaves for pesticide and medicine material. Mindi mostly cultivated in a community forest, especially in West Java. This study was aimed to assess the growth performance and genetic parameter of the progeny...

Utilization of seeds storage results in decreased plant productivity. The increase can be used by treating seeds before planting through the technique of invigoration. This purpose of the study is to assess the effectiveness of invigoration methods using polyethylene glycol (PEG 6000) and ultrafine bubbles (UFB) to improve viability and vigor of se...

Utilization of seeds storage results in decreased plant productivity. The increase can be used by treating seeds before planting through the technique of invigoration. This purpose of the study is to assess the effectiveness of invigoration methods using polyethylene glycol (PEG 6000) and ultrafine bubbles (UFB) to improve viability and vigor of se...

Mahogany ( Swietenia macrophylla ) is a tree species widely planted not only for timber production but also as a shade tree in urban areas both on the side of the highway (green belt) and other green open areas. The objective of this study was to analyze the genetic variation of growth and wood quality of a mahogany progeny test at the Parung Panja...

Indonesia has 14 million ha of degraded and marginal land, which provides very few benefits for human wellbeing or biodiversity. This degraded land may require restoration. The leguminous tree Pongamia pinnata syn. Milettia pinnata (pongamia) has potential for producing biofuel while simultaneously restoring degraded land. However, there is limited...

Deteriorated seeds can be improved by invigoration treatment, including gamma-ray irradiation by Cobalt-60 (⁶⁰Co). The purpose of this study was to determine the proper dose of gamma-ray irradiation (⁶⁰Co) to increase the decreased vigor of suren (Toona sureni (Blume) Merr.) seeds. This study uses a factorial completely randomized design (CRD) with...

The study of the effect of briquette composition on the seedling survival and growth of Gmelina in the field with the Randomized Group Design (RGD) experimental method. The parameters observed in the seed briquette composition test in the field were seedling diameter, seedling height and life percentage. The data were analyzed by Analysis of Varian...

To ensure that only high-quality seed is marketed, the seed inspector of the registered forestry-seed commercial providers plays a vital role. It will perform all the necessary tasks, including variety inspection, release testing of seed processing, and enforcement of the seed regulation. The registered forestry-seed commercial providers should con...

Critical land, which is still very large requires alternative reforestation methods, one of which is direct seeding. This study aims to determine the seed treatment and land preparation in direct seeding of A. crassicarpa seeds. The research was conducted in Parungpanjang, Bogor with a three-factor factorial randomized design, i.e. environmental co...

The green revolution movement is an action to change people's behavior quickly and precisely to care for environment quality through planting activities in South Kalimantan Province. This movement requires the quality forest tree seed supply, thus requiring research to determine an integrated and systematic strategy for developing forest tree seed...

Siregar IZ, Muharam KF, Purwanto YA, Sudrajat DJ. 2020. Seed germination characteristics in different storage time of Gmelina arborea treated with ultrafine bubbles priming. Biodiversitas 21: 4558-4564. Gmelina (Gmelina arborea) seed collected from tropical Indonesian forest experience seed deterioration during storage which is relatively faster th...

Direct seeding is a promising technique for reforestation, but it has been poorly studied in tropical forests. The research aims to assess the briquette composition, size and site preparation, and sowing date on the seedling survival and early growth of Gmelina arborea direct seeding at 12 months in Parung Panjang, Bogor. The briquette was printed...

Polyethylene glycol (PEG) and ultrafine bubbles (UFB) can be used to increase seed germination and its vigor. The purpose of this study was to examine the effect of PEG-6000 and UFB on the seed germination and vigor of white jabon after 7 years of storage. This study used a completely randomized design with factorial pattern using two factors, i.e....

Indonesia is a tropical country with an area of rain forests around 128 million ha. Forests have economic, social and environmental functions, therefore those functions must be sustained. Seeds are a very important part for maintaining the sustainability of forest functions, by providing good quality of seeds and seedlings. Nearly 70% of the seeds...

Seed, as a primary input, plays a vital role for establishment of forest plantation and for any afforestation program. In the recent years, forest and land rehabilitation and community forestry become a great emphasis for Indonesian national forestry programs that make the requirement of seed has multiplied manifold. Seed has become a valuable comm...

Anna N, Supriyanto, Karlinasari L, Sudrajat DJ, Siregar IZ. 2020. The growth, pilodyn penetration, and wood properties of 12 Neolamarckia cadamba provenances at 42 months old. Biodiversitas 21: 1091-1100. Jabon (Neolamarckia cadamba (Roxb) Bosser) is a potential tree species for the development of plantation forests and community forests to supply...

The availability of topsoil which is relatively fertile to use as seedling media is more and more limited so that the low nutrient degraded soil become alternative media for tree seedling nursery. The purpose of the research was to get the combination of degraded soil media mixture for nyawai (Ficus variegata) seedling media in nursery. The degrade...

One of the obstacles in the development of private forest of manglid (Magnolia champaca (Linn.) Baill ex Pierre) is the large diversity of growth in the field. Therefore, information on morphological characteristics as a quality manglid character with high productivity is needed. This study aims to characterize the early growth of several manglid f...

The accumulation of mismanaged plastic waste in the environment is a serious problem in Indonesia and become a global growing concern. Implementation of mitigation policies to reduce the use of plastics is very urgent, including in reforestation and land rehabilitation programs revealed by many plastics (polybags) used in seedling production for fo...

ABSTRAK Keberadaan tanah lapisan atas yang relatif subur untuk digunakan sebagai media semai semakin terbatas sehingga tanah-tanah terdegradasi yang miskin hara menjadi alternatif media untuk pembibitan tanaman hutan. Tujuan penelitian ini adalah untuk mendapatkan kombinasi campuran media tanah terdegradasi untuk pembibitan nyawai (Ficus variegata)...

Wood quality and growth are two important parameters that need to be analyzed for the utilization and selection of superior genotypes. The objective of this research was to investigate the ten provenances growth characteristics and their physical and mechanical properties of Acacia mangium at Parung Panjang, Bogor. The provenance trial was arranged...

Jabon putih (Neolamarckia cadamba) is a widely distributed potential fast-growing species and is thought to be associated with extensive genetic diversity. The aim of the research was to assess the morphological and genetic variation of jabon putih seedling based on AFLP markers. Randomized block design with 4 replications was used to assess seedli...

The Indonesian government strives to increase non-tax state revenues (PNBP). One of the potentials PNBP is using the state assets, such as research stations, for the public interest. This paper was aimed to formulate a strategy for the PNBP potential development using the Logical Framework Approach (LFA), with a case study at the Nagrak Research St...

Chaerani N, Sudrajat DJ, Siregar IZ, Siregar UJ. 2019. Growth performance and wood quality of white jabon (Neolamarckia cadamba) progeny testing at Parung Panjang, Bogor, Indonesia. Biodiversitas 20: 2295-2301. The aim of this study was to evaluate the genetic parameters of growth and wood quality in white jabon progeny test at 54 months old in Par...

ABSTRAK Penelitian ini bertujuan untuk mengkaji korelasi antara karakteristik morfologi bibit terhadap pertumbuhan tanaman nyamplung (Calophyllum inophyllum L) umur dua tahun setelah tanam di Parungpanjang, Bogor. Tiga kelompok benih dikumpulkan dari Carita, Purworejo, dan Pangandaran ditumbuhkan di persemaian dengan umur berbeda (4 bulan dan 6 bul...

The aim of this research is to assess the correlation of morphological characteristics of nyamplung seedling (Calophyllum inophyllum L) on field growth of two years age after outplanting in Parungpanjang, Bogor. Three seedlots collected from Carita, Pangandaran and Purworejo were grown in seedbeds with different ages (four months and six months). T...

Results of the provenance-progeny test in seedling and field test of white jabon (Neolamarckia cadamba) at Parung Panjang, Bogor District, West Java Province, Indonesia are reported and discussed. Twelve provenances representing 105 families were tested in nursery and field using randomized complete block design. Seedling height, root collar diamet...

Low dosage gamma ray iradiation has a potency to improve the seed germination by increasing of enzimatic activities, cell division, stimulating of responsive genes to auksin and improving of seed metabolism. The aim of the research was to identify seed storability of white jabon (Neolamarckia cadamba) and to find out the effective gamma ray irradia...

Gempol (Nauclea orientalis L.) is a fast-growing species with a wide crown and large diameter. This native species has the ability to replenish soil fertility and to control erosion and may be integrated in urban landscapes for genetic conservation purposes. However, the ecological function of the species as well as the genetic potentials of this s...

Tisuk (Hibiscus macrophyllus Roxb.) is a potential fast growing species to cultivate in a forest community and forest plantation. This species has strong seed dormancy that causing its germination becomes obstacle in seedling procurement. The aim of this research was to determine the response of tisuk seed germination on the several lighting period...

Trema orientalis L. is a potential species to be developed as a biomass-based renewable energy source. The use of quality seedling that can be done through vegetative techniques is one of the issues that determine the success of plantation development. The purpose of this research is to get the best cutting material and an optimal growth regulator...

The development of alternative methods for land and forest rehabilitation is necessary for producing good quality seedlings. This study aims to examine and compare the effect of addition of mycorrhiza and rhizobium on the growth of red sengon (Albizia chinensis (Osbeck) Merr.) seedlings in molded seedling media (BMSM) and the addition of various do...

Mahogany (Swieteniamacrophylla) is one of timber species which had been developed for more than five decades in Indonesia. However, the availability of an improve seed is still limited so that development of seed sources of mahagony must be conducted. The broadness of genetic diversity in seed source population will decrease inbreeding and improve...

Nyamplung (Calophyllum inophyllum), a native multipurpose tree species, produces good general-purpose L. timber, biodiesel, and medicine. The most widely used method of establishing the species is transplanting nursery-grown containerized seedlings. The research was aimed to compare the success of plant establishment methods, including direct seedi...

Direct seeding for reforestation is a practice that has begun in a long time in considering of the cost of seedling preparation. The seed pellets combined with the technique of cultivation and sowing in the right time is expected to further enhance the success of direct seeding. This study aimed to analyze the performance of early growth of direct...

Jabon (Neolamarkcia cadamba (Roxb) Bosser) is a fast growing and preferred species as material for various wood industries. However, the growth and quality information of its wood is still limited. This study aims to assess the characteristics of growth, physical properties of wood, genetic parameters of growth and physical properties of wood, and...

ABSTRACT Tembesu (Fagraea fragrans Roxb.) is a multipurpose indigenous species in Indonesia that can grow well on various types of site, such as in the dry land, temporary waterlogged or permanent waterlogged land. The purpose of this study was to examine the morpho-physiological characteristics of leaves, fruits, and seeds of tembesu from five pop...

Java olive (Sterculia foetida L.) is one of the promising non-edible feedstocks for biodiesel production. Utilization of this tree species for plantation is limited due to knowledge gaps in many fundamental aspects of seed properties. The aim of the study was to determine the variation that may exist among java olive seed collected from Bogor, Pali...

Suren (Toona sinensis) is a potential multipurpose species that is more cultivated at upland community forests, especially in Java and Sumatra islands. This research was aimed to assess the variation of fruit and seed morpho-physiological characters and to investigate the contribution of geoclimate and genetic factors on the fruit and seed morpho-p...

S Standard germination does not always indicate seed lot potential performance, especially if field germination conditions are less than optimal. Seed vigour tests therefore have been proposed to detect more accurate differences in potential seed lot performance. This study is aimed to obtain more precise method to assess Acacia mangium seed vigour...

Arrowroot (Maranta arundinacea L.) is an important starchy plant which has potential utilization for food, industry and medicine. The study was undertaken to assess the variability in morpho-physiological characters, tuber yield and starch content of 23 arrowroot populations in Garut District, West Java. The result showed some significant differenc...

Toona sinensis, di Indonesia secara populer dikenal dengan nama suren, merupakan jenis tanaman hutan penting sebab manfaatnya dalam pengobatan dan insektisida tradisional, dan nilai kayunya. Penelitian ini bertujuan untuk mengkaji daya simpan benih dan hubungannya dengan parameter tempat tumbuh (geoklimat) dan karakteristik morfo- bikimia benih sur...

Forest timber plantation of nyawai (Ficus variegate Blume) established by using vegetative propagated seedling from superior individu is very potential to develop for fulfilling the raw material demand of wood processing industries. The purpose of research was to get the optimum rooting medium and growth regulator concentration for rooting shoot cu...

ABSTRACT Planting of k aliandra (Caliandra calothyrsus Meissn.) is generally carried out by preparing the seedling using polybagwith top soil media. Large quantities of polybag may pollute the forest soil because polyethylene is difficult to be degraded. The research aimed to test ten compositions of block seedling media as a growth media for kalia...

ABSTRACT Jabon putih [Neolamarckia cadamba (Roxb.) Bosser] has been cultivated in large scale. However it is constrained by the availability of high quality seeds and seed storability information. This study aimed to identify seed storability of jabon putih based on populations and seed morpho-physiological characteristics. Seeds were collected fro...

Gelam (Meulaleuca leucadendra (L.) L.) merupakan salah satu jenis potensial untuk kayu konstruksi yang mampu beradaptasi pada lahan rawa gambut terdegradasi. Budidaya jenis ini masih terbatas dan memerlukan dukungan informasi teknologi pengadaan benih yang memadai, seperti kemasakan benih, teknik perkecambahan dan daya simpan benih. Tujuan peneliti...

Merbau (Intsia bijuga O. Ktze) |Kenari (Canarium indicum L.) Sawokecik (Manilkara kauki L.Dubard) | Panggal buaya (Zanthoxyllum rhetsa Roxburgh (DC)) Takir (Duabanga moluccana BL.) | Jelutung rawa (Dyera polyphylla Miq.) Suren (Toona sinensis (Juss) M.Roem.) | Pulai (Alstonia scholaris (L)R.Br.) Kayu afrika (Maesopsis emenii Engl.) | Nyatoh (Palaqu...

Gamma irradiation of seeds is known as an important factor in stimulating biochemical and physiological processes. This paper investigates the effect of seed irradiation on the seed germination, storability, and seedling growth traits of Magnolia champaca. Seeds were irradiated with 0, 5, 10, 15, 20, 40, 60, 80 and 100 Gy by Cobalt-60. The treated...

Gamma irradiation of seeds is known as an important factor in stimulating biochemical and physiological processes. This paper investigates the effect of seed irradiation on the seed germination, storability, and seedling growth traits of Magnolia champaca. Seeds were irradiated with 0, 5, 10, 15, 20, 40, 60, 80 and 100 Gy by Cobalt-60. The treated...

Genetic parameters on early growth of Neolamarckia cadamba, an indigenous species with potential as a source of wood timber, were estimated in open-pollinated provenance-progeny tests at two sites in West Java Province, Indonesia. The experiment was conducted using randomized complete block design with 12 provenances, 105 families and 5 replication...

Yulianti, Sudrajat DJ. 2016. Morphological responses, sensitivity and tolerance indices of four tropical trees species todrought and waterlogging. Biodiversitas 17: 110-115. Indonesia’s climate model predicts an increase in threat of drought andwaterlogging in several areas. However, knowledge on variations between tropical forest tree species, i...

Drought and water logging stress are the most critical environmental factors that affect tree seedling survival and growth in the field. In this study, 12 populations of white jabon (Neolamarckia cadamba (Roxb.) Bosser) were evaluated to determine the genetic variability among populations and correlation among morpho-physiological seedling characte...

ABSTRAK Sertifikasi mutu benih dan bibit merupakan suatu sistem pengendalian mutu benih dan bibit yang bertujuan untuk melindungi produsen/pengada, pengedar dan pengguna benih dan bibit. Sertifikasi mutu benih dan bibit di Indonesia dijalankan dengan menggunakan beberapa standar uji dan standar mutu yang merupakan perangkat/metode uji dan persyarat...

Ionizing radiation is currently a very important way to create genetic variability that is not exists in nature or that is not available to the breeder. Therefore, there are many papers aimed to determine the best radiation dose to be applied in plant breeding work. As a result it has been defined intervals gamma radiation useful for many cultivate...

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 waterloggi...

Reforestation programs should be supported by adequate forest nursery techniques. Seedlings used for reforestation programs in Indonesia were based on the height of seedlings ready to be planted in the field without basic knowledge of seedling morphology. White jabon (Anthocephalus cadamba [Roxb.] Miq.), a potentially fast-growing multipurpose tree...

Genetic variation patterns of white jabon (Anthocephalus cadamba [Roxb.] Miq.), were evaluated at the population level. Eleven natural populations were examined for variations in fruit, seed, and seedling morphophysiological characteristics. Analysis of variance revealed significant differences among populations for all the characteristics studied,...

Iradiasi sinar gamma dengan dosis rendah telah banyak digunakan untuk memperbaiki perkecambahan benih dan pertumbuhan bibit untuk banyak tanaman pertanian, namun teknik ini masih terbatas untuk diaplikasikan pada jenis- jenis tanaman hutan. Tujuan penelitian ini adalah untuk (1) mempelajari pengaruh iradiasi benih dan periode simpan terhadap perkec...

An amplified fragment length polymorphisms (AFLP) technique was applied to estimate the genetic diversity in four populations of white jabon (Anthocephalus cadamba Miq.) from different islands of Indonesia. The highest genetic diversity was detected in the Kapuas population (He = 0.3339, I = 0.4894), followed by Pomalaa (He = 0.2270, I = 0.3394) an...

Jabon putih ( Anthocephalus cadamba Miq.) merupakan salah satu jenis tanaman hutan cepat tumbuh potensial yang tersebar secara alami di sebagian besar pulau-pulau Indonesia. Penelitian ini bertujuan untuk mengkaji karakteristik tapak dan keragaman morfofisiologi benih dan bibit jabon putih. Benih dikumpulkan dari 11 populasi alami, yaitu di Sumater...

An amplified fragment length polymorphisms (AFLP) technique was applied to estimate the genetic diversity in four populations of white jabon (Anthocephalus cadamba Miq.) from different islands of Indonesia. The highest genetic diversity was detected in the Kapuas population (He = 0.3339, I = 0.4894), followed by Pomalaa (He = 0.2270, I = 0.3394) an...

Kepuh( Linn.)merupakan jenis tanaman potensial untuk dikembangkan sebagai sumber bahan bakar nabati yang belum banyak dibudidayakan. Tujuan penelitian ini adalah untuk mendapatkan teknologi perbaikan perkecambahan benih kepuh melalui penentuan masak fisiologis, pengeringan, penyimpanan, dan teknik perkecambahan. Penentuan masak fisiologis dilakukan...