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Journal articles on the topic 'Tectona grandis (Teak)'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Wahounou, PJ, B. Coulibaly, GP Gnonhouri, and A. Adiko. "TEAK (TECTONA GRANDIS) DECAY ASSOCIATED WITH." JOURNAL OF TROPICAL FOREST SECIENCE 29, no. 3 (2017): 363–70. http://dx.doi.org/10.26525/jtfs2017.29.3.363370.

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DOILOM, MINGKWAN, LUCAS A. SHUTTLEWORTH, JOLANDA ROUX, EKACHAI CHUKEATIROTE, and KEVIN D. HYDE. "Botryosphaeriaceae associated with Tectona grandis (teak) in Northern Thailand." Phytotaxa 233, no. 1 (2015): 1. http://dx.doi.org/10.11646/phytotaxa.233.1.1.

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Tectona grandis (teak) is one of the most important economic timbers worldwide. Limited studies exist on the potential pathogens of these trees. Fungi in the Botryosphaeriaceae are cosmopolitan opportunistic pathogens, endophytes and saprobes of numerous hosts. Both symptomatic and asymptomatic branch and stem sections, as well as leaves were collected from T. grandis in plantations and forests in four provinces of northern Thailand with the aim of identifying species of Botryosphaeriaceae associated with these trees. Morphology and multi-locus phylogenies (ITS, TEF1-α, β-tubulin) were used to identify the Botryosphaeriaceae species. Six species from four different genera were found on T. grandis in Northern Thailand. These included Dothiorella tectonae sp. nov., Lasiodiplodia brasiliense, L. pseudotheobromae, L. theobromae, Pseudofusicoccum adansoniae and Sphaeropsis eucalypticola. Dothiorella tectonae is introduced here as a novel species and compared with other species in the genus. Dothiorella tectonae, L. brasiliense, L. pseudotheobromae, L. theobromae, P. adansoniae and S. eucalypticola are first reports for T. grandis in Thailand. Variations in morphology between descriptions of previously described species and that obtained in this study are described to facilitate future identification of species.

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3

Renvillia, Rega, Afif Bintoro, and Melya Riniarti. "Penggunaan Air Kelapa Untuk Setek Batang Jati (Tectona Grandis)." Jurnal Sylva Lestari 4, no. 1 (2016): 61. http://dx.doi.org/10.23960/jsl1461-68.

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Teak plant wasa treewhich timber has durability classI and strong class I. It hasmany benefits, from roots to leaves. Variousbenefits of teak causing to do cultivation, one of propagation activities that often carried out was vegetative. Vegetative propagation of plants can be done bystem cutting, root cutting and shoot cutting. Using of growth regulator with coconut water immersion is expected to spur the growth rootofteak stem cutting. This study aimed to determine the effect of using coconut water to increase the success of teak stem cuttinggrowth, andto determine the best dose of using coconut water forteak stem cutting growth. This treatment used Completely Randomized Design(CRD). This research consisted of five treatments that usedcoconut water treatment 0%, 25%, 50%, 75%, and 100%. Each treatmentconsisted of five teak stem cuttings with repetition as much as 5 times. Amount ofmaterial plants required 5 x 5 x 5 = 125 teak stem cuttings. The resultshowed by using coconut wateras a growth regulator could increasethe growth of teak (Tectona grandis) stem cuttingin 50%--100% concentration and the best dose of coconut water asa growth regulator was 100%. Keywords : coconut water, cutting, dose, growth regulator, teak

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4

Jibkate, Nilisha, Dipika Ayate, and VV Ujjainkar. "Genetic variability studies in teak (Tectona grandis L)." International Journal of Farm Sciences 8, no. 1 (2018): 107. http://dx.doi.org/10.5958/2250-0499.2018.00026.5.

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5

Cintamulya, Imas. "SCREENING OF RAPD PRIMER FOR TEAK (Tectona grandis)." Berkala Penelitian Hayati 21, no. 1 (2015): 46–50. http://dx.doi.org/10.23869/bphjbr.21.1.20159.

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6

Doilom, Mingkwan, Asha J. Dissanayake, Dhanushka N. Wanasinghe, et al. "Microfungi on Tectona grandis (teak) in Northern Thailand." Fungal Diversity 82, no. 1 (2016): 107–82. http://dx.doi.org/10.1007/s13225-016-0368-7.

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7

Kertadikara, A. W. S., and D. Prat. "Isozyme variation among teak (Tectona grandis L.f.) provenances." Theoretical and Applied Genetics 90, no. 6 (1995): 803–10. http://dx.doi.org/10.1007/bf00222015.

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8

Damayanti, Ratih, Krisdianto Krisdianto, Jugo Ilic, Gustan Pari, Peter Vinden, and Barbara Ozarska. "Wood Permeability Assessment of Young Teak (Tectona grandis L.f.)." Wood Research Journal 11, no. 2 (2021): 41–47. http://dx.doi.org/10.51850/wrj.2020.11.2.41-47.

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Wood properties of young teak (Tectona grandis L.f.) is inferior, and then preservative treatment is one possible solution to enhance its service life. The uptake and movement of preservatives through wood cell structure is directly connected to the wood permeability. There are two simple methods to identify wood permeability: water soaking and bubble test methods. This paper assesses the young teak permeability by water soaking and bubble test methods. The assessment was conducted into five cm thick young-teak discs by soaking in the red-dye water and blowing air into the discs which had been coated with soap. Results show that the heartwood is less permeable than sapwood. Red-dye penetrates almost 100% of the sapwood area, and the red-dye did not penetrate in the heartwood. Red-dye only penetrates in the cracked heartwood through the void volume in the cracking heartwood. There is a transition zone between sapwood and heartwood, and it is refractory. Bubble test with air pressure from compressor could open the air-pathway in the heartwood and sapwood of young-teak discs taken from Bogor. The bubble test result of young-teak discs from Madiun showed air-pathway only in the sapwood, but heartwood. The air pressure is not capable of moving the vapour through the wood cell. It indicates that the heartwood of young-teak from Madiun is less permeable and less possibility for pressure treatment.

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9

Lestari, Puji, Ridla Arifriana, and Handojo Hadi Nurjanto. "Responds of Superior Teak (Tectona grandis) on Different Sulphur Concentrations." Jurnal Sylva Lestari 7, no. 2 (2019): 128. http://dx.doi.org/10.23960/jsl27128-138.

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The tree improvement program has invented superior teak with an ability to improve its productivity. Yet the information about basic nutrient requirement of superior teak is less known. This study aimed to determine the optimal concentration of sulfur for the best growth of superior teak seedling and to identify the morphological symptoms of teak seedlings affected by several concentration levels of S. This study was conducted at a nursery on six months old teak seedlings. The experimental design was Completely Randomized Design (CRD) with four different solution treatments with three replication each. The treatments are K (control, aqua dest does not contain nutrients), S0 (solution contains nutrients except sulfur), S1 (solution contains nutrients with 0,5 full strength of S), and S2 (solution contains nutrients with full strength of S). Each treatment was replicated 3 times. Parameter observed included the height of seedling, the diameter of seedling, the nodal distance of seedling, the number of leaves, size of leaves and morphological symptoms of leaf. The results showed that at a concentration of nitrogen (N), phosphor (P), potassium (K), calcium (Ca), and magnesium (Mg) in full strength level, superior teak seedling which treated by S1 (S concentration of 421 ppm) resulted in the best growth. However, the morphology of teak leaves in all treatment showed abnormal.Keywords: growth, morphology, sulfur, superior teak

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10

DOILOM, MINGKWAN, LUCAS A. SHUTTLEWORTH, JOLANDA ROUX, EKACHAI CHUKEATIROTE, and HYDE D. KEVIN. "Barriopsis tectonae sp. nov. a new species of Botryosphaeriaceae from Tectona grandis (teak) in Thailand." Phytotaxa 176, no. 1 (2014): 81. http://dx.doi.org/10.11646/phytotaxa.176.1.10.

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Tectona grandis (teak) is an increasingly important timber resource globally. It is native to Asia, including Thailand. In this paper a new species of Barriopsis, B. tectonae sp. nov., is described from a dead T. grandis branch collected in Thailand. Barriopsis tectonae can be differentiated from the two previously described species of Barriopsis; B. fusca and B. iraniana, by its ascospore and conidial dimensions. Phylogenetic evaluation of the ITS, TEF1-α and BT genomic regions provide further evidence that B. tectonae is a novel species.

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11

Muhammed, Hadiza, Lare H. Abdullahi, Fatima G. Mayaki, and Usman H. Boko. "Phytochemical compositions, antimicrobial activities, and thin layer chromatography analysis of aqueous, and methanol extracts of Tectona grandis leaf." AROC in Natural Products Research 01, no. 01 (2021): 44–51. http://dx.doi.org/10.53858/arocnpr01014451.

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Background: Teak (Tectona grandis) from the family Verbenaceae/Lamiaceae is indigenous to India, other tropical countries, and one of the naturally discovered plants to be known by scientists due to its high potential and effectiveness in disease preventive and curative action. The present study evaluated the phytochemical composition, anti-microbial activity of methanol and aqueous extract of Tectona grandis leaf, and characterized the extracts using thin-layer chromatography (TLC). Methods: The phytochemical, anti-microbial activity thin layer chromatography (TLC) analysis was conducted using established protocols. Results: The results revealed that the methanol extract of teak plant leaves contains steroids, tannins, saponin, coumarin, protein, carbohydrates, alkaloids, diterpenes, phytosterol, phlobatannin while the aqueous extract contains tannins, saponin, coumarin, protein, carbohydrate, alkaloid, diterpenes, phytosterol, and phlobatannins. The methanol extract of Tectona grandis showed the highest activity on S. epidermasis (14mm) and against S.aureus (10mm) at a concentration of 40mg/ml followed by the activities of aqueous extract of teak plant leaf against Candida Albicans (8mm) at a concentration of 40mg/ml. The extract had no inhibitory effect at all other concentrations. Conclusion: The result confirmed that Tectona grandis contain several bioactive phytochemicals that can be explored for the treatment of pathogenic microorganism.

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12

Shafi, P. Mohamed, and M. Mohanakrishnan. "Chemical Ecology of Teak (Tectona grandis Linn.) Floral Volatiles." Asian Journal of Chemistry 32, no. 11 (2020): 2693–99. http://dx.doi.org/10.14233/ajchem.2020.22473.

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In present work, the GC, GC-MS and GC-olfactory techniques were applied for the first time for the analysis of floral volatiles of teak. Chemical ecology of the teak flower is also studied by correlating each of the components in its volatile profile with the major classes of insect visitors and pollinators with the help of the internet databases. Sixty six components consisting of 84% of the oil were identified in the GC-MS analysis. Out of these 78% were oxygenated compounds while only 20% were various hydrocarbons, either sesquiterpenes or diterpenes. All the monoterpenes were in the oxidized form which reduces the therapeutic potentials of the oil while improving its perfumery value. The olfactory evaluation of the oil revealed the presence of a wide spectrum of impressions ranging from spicy-floral to mushroom-metallic and woody-earthy to honey-like. The main reason for the enormous number of insects visiting teak flower is the presence of large number of volatile compounds with diverge semiochemical behaviour. At the same time the presence of some specific allomones and alarm pheromones results in the repulsion of some effective pollinators. This leads to ineffective pollination and comparatively low fruit development in teak.

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13

Pumijumnong, Nathsuda, Dieter Eckstein, and Ute Sass. "Tree-Ring Research on Tectona Grandis in Northern Thailand." IAWA Journal 16, no. 4 (1995): 385–92. http://dx.doi.org/10.1163/22941932-90001428.

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From a network of teak chronologies in northern Thailand, 75 trees within one province were evaluated regarding their climatic signal. The raw tree-ring series revealed a high mean sensitivity of 0.50 and a moderate first-order autocorrelation of 0.48. The first principal component of the standardized data explained 44% of the total variation in the tree-ring data, indicating a considerable climatic influence on tree growth. The climate-growth relationship suggested that growth of teak in this study area is mainly controlled by rainfall from April to June. Thus, there is some promise that the whole network of teak chronologies in northern Thailand can contribute to reconstructing climate over at least the last three centuries.

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14

Latifah Azmi, Paramitha Retno Ramadhanti, Afreza Tamimi Hasibuan, and Waras Nurcholis. "Mini-Review: Antibacterial Products from Teak Leaf Extract (Tectona grandis L.)." International Journal of Research in Pharmaceutical Sciences 11, SPL4 (2020): 2481–87. http://dx.doi.org/10.26452/ijrps.v11ispl4.4502.

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Teak (Tectona grandis L.) is a plant that has a high resistance to weather changes and termite attacks. The dominant use of teak in the furniture industry left behind its leaf as agricultural waste (agro-waste). Several pharmacological activities have been identified in the teak leaf part. In this review article, the authors gathered information from previous studies regarding the potential use of teak leaf antibacterial compounds to be made into various antibacterial products, namely hand sanitizers, floor disinfectants, fruit and vegetable disinfectants, and deodorant. Literature searches are carried out through search engines and online journal databases. The results of the literature review show that there are at least eight antibacterial compounds from teak leaf that have been isolated, identified, and tested for their activity, namely anthratectone, naphthotectone, juglone, gallic acid, ellagic acid, rutin, quercetin, and sitosterol. Furthermore, it is known that the solvent that can be used for teak leaf extraction by providing the best antibacterial activity is ethanol. This information is used as a recommendation for optimization of teak leaf extraction as part of the author’s suggestion in making antibacterial products. In addition, previous research related to the use of ethanol extract from the teak leaf as an antibacterial product for liquid soap was also included. The study shows that the teak leaf extract liquid soap has promising activity compared to its comparable commercial soap, thereby strengthening the author's idea to utilize teak leaf extract as a component of the active ingredient of other antibacterial products, namely hand sanitizers, floor disinfectants, fruit and vegetable disinfectants, and deodorant.

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15

Dahms, K. G. "Das Holzportrait Teak (Tectona grandis L. f., Familie Verbenaceen)." Holz als Roh- und Werkstoff 47, no. 3 (1989): 81–85. http://dx.doi.org/10.1007/bf02606988.

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16

Balogun, A. O., O. A. Lasode, and A. G. McDonald. "Devolatilisation kinetics and pyrolytic analyses of Tectona grandis (teak)." Bioresource Technology 156 (March 2014): 57–62. http://dx.doi.org/10.1016/j.biortech.2014.01.007.

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17

Medeiros, Reginaldo Antonio, Haroldo Nogueira de Paiva, Álvaro Augusto Vieira Soares, et al. "Productive potential of Tectona grandis in Midwest Brazil." Advances in Forestry Science 6, no. 4 (2019): 803. http://dx.doi.org/10.34062/afs.v6i4.8590.

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This study aimed to assess the productive potential of teak plantations in the state of Mato Grosso, Midwest Brazil. We modeled the mean annual increment at the age of 12 years (MAI12) as a function of climatic, edaphic and physiographic variables using artificial neural networks (ANN). The ANNs were shown effective in modeling the mean annual increment, despite of some inconsistences found for areas for which part of the environmental information was not available. The greatest proportion of the land covered by our study (62%) presented moderate productivity, ranging from 10.24 m3 ha-1 year-1 to 28.76 m3 ha‑1 year‑1 MAI12. The highest (MAI12 > 28.76 m3 ha-1 year-1) and the lowest (MAI12 < 10.24 m3 ha‑1 year‑1) productivity areas accounted for 18% and 20% of the study area, respectively. Studies comprising a more comprehensive coverage of the teak production areas are encouraged in order to improve estimation accuracy.

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18

Maulida, Fathia, Kustin Bintani Meiganati, and Mamay Maslahat. "KOMPONEN KIMIA KAYU TRUBUSAN JATI UNGGUL NUSANTARA (Tectona grandis Linn.f.) PADA BAGIAN PANGKAL, TENGAH DAN UJUNG." Jurnal Sains Natural 10, no. 2 (2020): 55. http://dx.doi.org/10.31938/jsn.v10i2.277.

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Chemical Component of Copies Superior Teak (Tectona grandis Linn.f)in Base, Center and Edge StemTeak (Tectona grandis, Linn. f) is one of the plants that is able to make a real contribution in providing wood raw materials in the timber industry. The limited availability of quality teak wood on the market so that the craftsmen use superior teak wood. The amount of the superior teak wood has not been known yet. Therefore, a study was carried out on the level of wood chemical components of five-year-old superior teak wood based on the height of the stem (base, middle and end), so that the suitability of wood usage can be known. Based on the results of the study the levels of chemical components in wood superior teak of age five years, the highest levels of extractive substances found at the end of the stem by 8.56%, the highest percentage of levels of holocellulose and cellulose found in the middle part of the stem with a content of 63.95% and 39.99%, the percentage of hemicellulose content 29.66% and the highest percentage of lignin content found in the base part with levels of 30.52%. This superior teak wood can be used as construction materials such as plywood, woodworking wood, lamina wood and artificial boards.Keyword: Tectona grandis, Thrubus, Extractive Subtances, Holocellulose, Cellulose, Lignin.ABSTRAKTanaman Jati (Tectona grandis, Linn. f) merupakan tanaman yang berkontribusi di bidang industri perkayuan. Terbatasnya ketersediaan kayu jati berkualitas di pasaran mengakibatkan industri perkayuan menggunakan kayu jati unggul. Kayu trubusan jati unggul tersebut belum diketahui bagaimana komponen kimianya. Oleh karena itu, dilakukan penelitian mengenai kadar komponen kimia kayu trubusan jati unggul yang berumur lima tahun berdasarkan ketinggian batang (pangkal, tengah dan ujung), sehingga dapat diketahui kesesuaian penggunaan kayu. Berdasarkan hasil penelitian kadar komponen kimia pada kayu trubusan jati unggul umur lima tahun, rata-rata kadar zat ekstraktif tertinggi terdapat pada bagian ujung batang sebesar 8,56%, persentase tertinggi kadar holoselulosa dan selulosa terdapat pada bagian tengah batang dengan kadar 63,95% dan 39,99%, persentase kadar hemiselulosa 29,66%, dan persentase tertinggi kadar lignin terdapat pada bagian pangkal dengan kadar 30,52%. Kayu trubusan jati unggul ini dapat digunakan sebagai bahan konstruksi seperti kayu lapis, kayu pertukangan, kayu lamina dan papan buatan.Kata Kunci: Tectona grandis, Thrubus, Zat Ekstraktif, Holoselulosa, Selulosa, Lignin.

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19

Winara, Aji. "Diversity of Soil Macrofauna on Teak (Tectona grandis) and Kimpul (Xanthosoma sangittifolium) Agroforestry." Jurnal Agroforestri Indonesia 3, no. 1 (2020): 9–18. http://dx.doi.org/10.20886/jai.2020.3.1.9-18.

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Soil macrofauna has an important role in the ecosystems and soil fertility. Agroforestry patterns have environmental benefits such as providing living space for biodiversity including soil macrofauna. This study aims to measure the influence of teak and kimpul agroforestry on the diversity of soil macrofauna. The study was conducted on teak and kimpul agroforestry demonstration plots in the KPH Yogyakarta in January 2019. The research method used was monolith and hand sorting techniques and the analysis was carried out descriptively using the species diversity index approach. The results showed that teak and kimpul agroforestry patterns did not affect on the diversity of species and density of soil macrofauna. The level of diversity of soil macrofauna in teak and kimpul agroforestry, teak monoculture and kimpul monoculture are low. The value of soil macrofauna diversity in teak and kimpul agroforests is higher than teak monoculture and kimpul monoculture. A total of five types of soil macrofauna were found in 12-year teak agroforestry, six types in 42-year teak agroforestry, five types in 12-year teak monoculture, eight types in 42-year teak monoculture and five types in kimpul monoculture. The dominant soil macrofauna are Microtermes sp. and Anomala sp.

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20

NASCIMENTO, DIEGO ARCANJO, Otávio Peres Filho, Lilian Guimarães Favare, Marcelo Dias Souza, Alexandre Dos Santos, and Josamar Gomes Silva-Junior. "INICIAL DEVELOPMENT OF Tectona grandis L.f UNDER NUTRICIONAL RESTRICTION." FLORESTA 50, no. 2 (2020): 1223. http://dx.doi.org/10.5380/rf.v50i2.62242.

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In the process of seedling production plant nutrition can improve the quality. Among the forest species, the teak stands out for the resistant wood and its rusticity. The knowledge of the nutritional needs of teak seedlings favors its development with reflex in the field production. The experiment was conducted in a greenhouse with seedlings planted in 3 liter pots, as substrate we used underground soil. The treatments were divided into: control, complete solution; omission of N, omission of P, omission of K, omission of Ca, omission of Mg, omission of Si. To evaluate the effects of treatments on plants, we measured total height and stem diameter, with six biweekly readings. The observations were submitted to analysis of variance and the means were compared by Tukey test at 5% probability. Subsequently, linear regression models were adjusted, containing as independent variable: development time; and variable dependent height and diameter of the collection per treatment. There was no significant difference between treatments in the variable total height of plants, only in stem diameter where the complete treatment had the highest mean values. In the first months of development of teak, it was possible to observe a sufficient performance in the evaluated variables, however, fertilization should be carried out for a satisfactory production, mainly containing the macronutrients N, P, K.

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21

Mujetahid M., Andi. "PRODUKTIVITAS PENEBANGAN PADA HUTAN JATI (Tectona Grandis) RAKYAT DI KABUPATEN BONE." PERENNIAL 5, no. 1 (2009): 53. http://dx.doi.org/10.24259/perennial.v5i1.190.

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Community teak forest in Bone Regency was +- 4,220 ha in wide, spreading in Amali, Ulaweng, Bengo, Mare, Tonra, Kahu, Salomekko, Ajangale, Dua Boccoe, Lamuru, Tellulimpoe, Lappariaja, Libureng, Palakka, Bontocani and Ponre Subdistricts. The descriptive method was used to describe and clarify felling activities of community teak forest. The quantitative approach was conducted by recording and analyzing the data such as working time, length, diameter, volume, , productivity, etc. Time measurement of each work element with non stop method to get total time. The study was aimed to felling productivity with chainsaw 5,12 m3 /day. Key words: community teak forest, felling, working time, productivity

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22

Fernández-Moya, Jesús, Alfredo Alvarado, Rafael Mata, et al. "Soil fertility characterisation of teak (Tectona grandis L.f.) plantations in Central America." Soil Research 53, no. 4 (2015): 423. http://dx.doi.org/10.1071/sr14256.

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Teak (Tectona grandis L.f.) is an important species in the worldwide quality tropical hardwood sector, which has gained significance in Central America since the first large plantations were established in the 1980s. The present work is a descriptive study that aims to: (1) analyse and characterise the general soil patterns which may be influencing teak plantations in Central America; (2) assess differences between countries and sub-regions; (3) create a global framework to help contextualise the soil fertility analyses conducted at sub-regional or farm level, and (4) determine the main problems associated with soil fertility in the region. Soil fertility was measured at 684 sites in Costa Rica, Guatemala and Panama. Although teak is considered to be a species with high soil nutrient requirements, and high fertility is usually assumed in teak plantations, the results show that this species has been planted in a wide variety of soils, including many with serious fertility problems (e.g. Ultisols and perhaps Oxisols) or with added difficulties due to their physical properties (e.g. Vertisols). The present analysis reveals a general K deficiency in the Central American teak plantations, where P deficiency and acidity toxicity are also relatively common problems. These soil fertility problems probably stem from poor site selection by forest managers in the 80s and 90s. Hence, although soil fertility is carefully evaluated when most teak plantations are established today, managers have to deal with soil fertility deficiencies in many sites where teak was established some years ago.

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23

Silva, Carla Vanessa Moraes, Kassia Yumi Yamaki, and Anderson Gonçalves da Silva. "Identification and characterization of insect fauna in plantations of TEAK (Tectona Grandis)." Nucleus 10, no. 2 (2013): 207–18. http://dx.doi.org/10.3738/1982.2278.879.

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24

Dewi, Swastika, Supriyadi Supriyadi, and Umar Santoso. "Physical and Chemical Characteristics of Teak (Tectona Grandis) Leaves as Food Packaging Material." Indonesian Food and Nutrition Progress 17, no. 2 (2021): 51. http://dx.doi.org/10.22146/ifnp.46786.

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Teak (Tectona grandis) leaves is commonly used as the packaging material of traditional food in Indonesia. This study aimed to determine the physical and chemical characteristics of teak leaves with various maturation stages to obtain information about the potency of teak leaves as active packaging material. The physical characteristics analysis including leaf color, thickness, and tensile strength, while chemical characteristics were moisture, fat content, fatty acid, and volatile profile. The results showed that the color, thickness, tensile strength, moisture, and fat content, were light green, 0.306±0.024 mm, 0.22±0.114 MPa, 74.93%, and 2.52% respectively for young teak leaves; while the mature has darker green, 0.388±0.001 mm, 0.36±0.163 MPa, 73.05%, and 2.54% respectively. The fatty acid profiles showed that young teak leaves contained 5 types of fatty acids, dominated by lignoceric acid; while mature teak leaves contained 9 types of fatty acids dominated by tricosanoic acid. The volatile components of young teak leaves e.g. acid and ester compounds, while the mature was dominated by acid and ether compounds. From the results, it is suggested that the use of teak leaves as active food packaging material can be scientifically justified.

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25

Nayak, D., HS Thakare, PK Shrivastava, and DP Patel. "Irrigation Scheduling of Teak (Tectona grandis) Seedlings at Nursery Stage." Journal of Tree Sciences 35, no. 2 (2016): 54. http://dx.doi.org/10.5958/2455-7129.2016.00009.1.

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26

Kraenzel, Margaret, Alvaro Castillo, Tim Moore, and Catherine Potvin. "Carbon storage of harvest-age teak (Tectona grandis) plantations, Panama." Forest Ecology and Management 173, no. 1-3 (2003): 213–25. http://dx.doi.org/10.1016/s0378-1127(02)00002-6.

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27

Palupi, Endah R., and John N. Owens. "Pollination, Fertilization, and Embryogenesis of Teak (Tectona grandis L. f.)." International Journal of Plant Sciences 158, no. 3 (1997): 259–73. http://dx.doi.org/10.1086/297437.

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Prasetyawati, C. A., and N. A’ida. "Morphological characterization of different provenances of Teak (Tectona grandis L.)." IOP Conference Series: Earth and Environmental Science 308 (September 4, 2019): 012062. http://dx.doi.org/10.1088/1755-1315/308/1/012062.

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Lukmandaru, Ganis, and Koetsu Takahashi. "Radial distribution of quinones in plantation teak (Tectona grandis L.f.)." Annals of Forest Science 66, no. 6 (2009): 605. http://dx.doi.org/10.1051/forest/2009051.

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Chaiya, Leardwiriyakool, Paiboolya Gavinlertvatana, Neung Teaumroong, et al. "Enhancing Teak (Tectona grandis) Seedling Growth by Rhizosphere Microbes: A Sustainable Way to Optimize Agroforestry." Microorganisms 9, no. 9 (2021): 1990. http://dx.doi.org/10.3390/microorganisms9091990.

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With its premium wood quality and resistance to pests, teak is a valuable tree species remarkably required for timber trading and agroforestry. The nursery stage of teak plantation needs critical care to warrant its long-term productivity. This study aimed to search for beneficial teak rhizosphere microbes and assess their teak-growth-promoting potentials during nursery stock preparation. Three teak rhizosphere/root-associated microbes, including two teak rhizobacteria (a nitrogen-fixing teak root endophyte-Agrobacterium sp. CGC-5 and a teak rhizosphere actinobacterium-Kitasatospora sp. TCM1-050) and an arbuscular mycorrhizal fungus (Claroideoglomus sp. PBT03), were isolated and used in this study. Both teak rhizobacteria could produce in vitro phytohormones (auxins) and catalase. With the pot-scale assessments, applying these rhizosphere microbes in the form of consortia offered better teak-growth-promoting activities than the individual applications, supported by significantly increased teak seedling biomass. Moreover, teak-growth-promoting roles of the arbuscular mycorrhizal fungus were highly dependent upon the support by other teak rhizobacteria. Based on our findings, establishing the synergistic interactions between beneficial rhizosphere microbes and teak roots was a promising sustainable strategy to enhance teak growth and development at the nursery stage and reduce chemical inputs in agroforestry.

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Hine, Ana, Alejandra Rojas, Lorenzo Suarez, Olman Murillo, and Mario Espinoza. "Optimization of Pollen Germination in Tectona grandis (Teak) for Breeding Programs." Forests 10, no. 10 (2019): 908. http://dx.doi.org/10.3390/f10100908.

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Teak has become one of the most widely planted species in tropical regions of the world, given its high price for its timber in international markets. This has motivated the development of tree improvement programs in the Latin American region and in the tropical world in general. The latest advances have achieved clonal forestry at an operational scale. Recently, important efforts are being made to advance towards the next breeding generation, since knowledge about floral biology and pollen management have become important issues. A breeding program is being developed through the Tree Improvement Cooperative GENFORES—a vinculation model between the academy and forestry companies that was initiated in Costa Rica and now involves six Latin American countries. In order to advance into the next breeding generations, building capacities in topics such as pollen banks requires pollen quality, thus enabling the exchange of pollen among cooperative members. Pollen fertility studies are of considerable value in breeding programs, in order to determine pollen viability and germination in collections of genotypes, before going into mating operational activities. In this study, we optimized pollen quality analysis protocols in terms of the viability and germination of fresh teak pollen. Results of this research show that 90% viability and 28% germination can be achieved in fresh pollen grains, both inside and outside the anther, previously dehydrated in silica gel for 2 to 4 h (40% and 33% humidity, respectively). Brewbacker and Kwack (BK) medium at 10% of its salts + 10% sucrose and at a pH of 7 must be used as the germination medium. It is possible to evaluate teak pollen quality using the parameters defined in this study, which will in turn allow pollen management and purification, providing an opportunity for carrying out controlled crosses at an operational scale as part of teak breeding programs.

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Huang, Guihua, Kunnan Liang, Zaizhi Zhou, Guang Yang, and Enarth Muralidharan. "Variation in Photosynthetic Traits and Correlation with Growth in Teak (Tectona grandis Linn.) Clones." Forests 10, no. 1 (2019): 44. http://dx.doi.org/10.3390/f10010044.

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In order to interpret the patterns of genetic variation of photosynthesis and the relationships with growth traits within gene resources of teak (Tectona grandis Linn.), gas exchange, and chlorophyll fluorescence parameters, growth traits of plants in nursery and field trials were measured for 20 teak clones originated from different countries. The results show that there was abundant genetic variation in gas exchange, chlorophyll fluorescence, and growth among the teak clones. The measured traits were found to have generally high heritability (h2) except for intercellular concentration of carbon dioxide (CO2) (Ci). The net photosynthetic rate (Pn), seedling height, and individual volume of wood were significantly correlated with each other, and seedling height was significantly correlated with plant height in field trials, suggesting that Pn and seedling height can be useful in teak breeding. Teak clones 7029, 71-5, 7219, 7412, and 7122, and provenances 3070, 3074, and 3071 had higher photosynthetic rates, and can be regarded as a key resource in teak improvement programs. This work provides useful information for teak breeding and germplasm resource management.

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JOSHI, SUNIL, BINDU K. JOSE, PENNY GULLAN, T. V. SAJEEV, and E. V. ANOOP. "A new species of mealybug (Hemiptera: Coccomorpha: Pseudococcidae) from Tectona grandis L.f. (Lamiaceae) in southern India." Zootaxa 4718, no. 3 (2020): 391–400. http://dx.doi.org/10.11646/zootaxa.4718.3.7.

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A new species of mealybug, Formicococcus tectonae Joshi, Bindu & Gullan sp. n., is described and illustrated based on adult females collected from teak, Tectona grandis (Lamiaceae), in plantations in Thrissur district, Kerala, southern India. The mealybug lives in tunnels made by the teak trunk borer, Cossus cadambae (Moore) (Lepidoptera: Cossidae). Ants of a Tapinoma species were found in the tunnels, tending the mealybugs. The new mealybug is most similar morphologically to F. polysperes Williams and F. robustus (Ezzat & McConnell) comb. rev. A key to adult females of all the Formicococcus species recorded from India is provided.

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Cahyana, Budi Tri. "SERBUK GERGAJIAN KAYU JATI (Tectona grandis) SEBAGAI BAHAN PENGAWET KAYU DURIAN (Durio zibethinus)." Jurnal Riset Industri Hasil Hutan 4, no. 2 (2012): 1. http://dx.doi.org/10.24111/jrihh.v4i2.1201.

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Durian wood (Durio zibethinus) from unproductive trees is a potential source of wood as raw material for furniture industry, but it has the weakness of vurnability to the wood insects such as dry wood termites. The objective of research is to find out the effectiveness of sawdust extract of teak wood (Tectona grandis) in preventing the decaying of durian wood. Thus the effort can improve the properties of durian wood. The preservative used in the research is extract of teak sawdust, i.e 250 gr/5 l water, 500 gr/5 l water and 750 gr/5 l. The preservation is used by cold soaking to the solution resulted from extraction for 7 days. The result of research shows that the application of teak sawdust for 500 gr/5 l water is sufficiently effective, because it causes the mortality of dry wood termites for 100,00 % and the retention of 17, 01 mg/cm3.Keywords: teak sawdust, durian wood, natural preservatives, mortality, retention.

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Mishra, Yash, V. Sowmya, and S. Shanthakumar. "ADSORPTION STUDIES OF BASIC DYES ONTO TEAK (TECTONA GRANDIS) LEAF POWDER." Journal of Urban and Environmental Engineering 9, no. 2 (2016): 102–8. http://dx.doi.org/10.4090/juee.2015.v9n2.102-108.

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In this study, the adsorption potential of Teak (Tectona grandis) leaf powder (TLP) to remove Methylene blue (MB) and Malachite Green (MG) dye molecules from aqueous solution was investigated. Batch experiments were conducted to evaluate the influence of operational parameters such as, pH (2-9), adsorbent dosage (1-7 g/L), contact time (15-150 minutes) and initial dye concentration (20-120 mg/L) at stirring speed of 150 rpm, on the adsorption of MB and MG on TLP. The maximum removal efficiency of 98.4% and 95.1% was achieved for MB and MG dye, respectively. The experimental equilibrium data were analyzed using Langmuir, Freundlich and Temkin isotherms and it was found that it fitted well to the Freundlich Isotherm model. The surface structure and morphology of the adsorbent was characterized using Scanning electron microscopy (SEM) and the presence of functional groups and its interaction with the dye molecules were analyzed using Fourier transform infrared (FTIR). Based on the investigation, it has been demonstrated that the teak leaf powder has good potential for effective adsorption of Methylene blue and Malachite green dye.

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Mishra, Yash, V. Sowmya, and S. Shanthakumar. "ADSORPTION STUDIES OF BASIC DYES ONTO TEAK (TECTONA GRANDIS) LEAF POWDER." Journal of Urban and Environmental Engineering 9, no. 2 (2016): 102–8. http://dx.doi.org/10.4090/juee.2015.v9n2.102108.

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In this study, the adsorption potential of Teak (Tectona grandis) leaf powder (TLP) to remove Methylene blue (MB) and Malachite Green (MG) dye molecules from aqueous solution was investigated. Batch experiments were conducted to evaluate the influence of operational parameters such as, pH (2-9), adsorbent dosage (1-7 g/L), contact time (15-150 minutes) and initial dye concentration (20-120 mg/L) at stirring speed of 150 rpm, on the adsorption of MB and MG on TLP. The maximum removal efficiency of 98.4% and 95.1% was achieved for MB and MG dye, respectively. The experimental equilibrium data were analyzed using Langmuir, Freundlich and Temkin isotherms and it was found that it fitted well to the Freundlich Isotherm model. The surface structure and morphology of the adsorbent was characterized using Scanning electron microscopy (SEM) and the presence of functional groups and its interaction with the dye molecules were analyzed using Fourier transform infrared (FTIR). Based on the investigation, it has been demonstrated that the teak leaf powder has good potential for effective adsorption of Methylene blue and Malachite green dye.

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., O. M. Agbogidi, B. C. Okonta ., and E. M. Okechukwu . "Performance of Teak (Tectona grandis Linn.) Seedlings under Different Planting Media." Research Journal of Forestry 1, no. 2 (2007): 91–94. http://dx.doi.org/10.3923/rjf.2007.91.94.

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Palupi, Endah R., and John N. Owens. "Reproductive Phenology and Reproductive Success of Teak (Tectona grandis L. F.)." International Journal of Plant Sciences 159, no. 5 (1998): 833–42. http://dx.doi.org/10.1086/297604.

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Vyas, Pooja, Dinesh Kumar Yadav, and Poonam Khandelwal. "Tectona grandis (teak) – A review on its phytochemical and therapeutic potential." Natural Product Research 33, no. 16 (2018): 2338–54. http://dx.doi.org/10.1080/14786419.2018.1440217.

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Larekeng, S. H., Gusmiaty, M. Restu, M. A. Arsyad, and R. Dermawan. "Morphophysiological analyses on Teak (Tectona grandis Linn. f.) from three provenances." IOP Conference Series: Earth and Environmental Science 235 (February 20, 2019): 012048. http://dx.doi.org/10.1088/1755-1315/235/1/012048.

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Karlinasari, L., U. Adzkia, R. A. Tang, and Irzaman. "Dielectric properties of heat treated teak wood (Tectona grandis Linn. F)." IOP Conference Series: Materials Science and Engineering 935 (September 23, 2020): 012064. http://dx.doi.org/10.1088/1757-899x/935/1/012064.

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Laskar, S., S. Ghosh Majumdar, and B. Basak. "Isolation and chemical investigation of teak (Tectona grandis linn) seed proteins." Journal of the American Oil Chemists’ Society 62, no. 8 (1985): 1266–68. http://dx.doi.org/10.1007/bf02541840.

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Kokutse, Adzo Dzifa, Henri Baillères, Alexia Stokes, and Kouami Kokou. "Proportion and quality of heartwood in Togolese teak (Tectona grandis L.f.)." Forest Ecology and Management 189, no. 1-3 (2004): 37–48. http://dx.doi.org/10.1016/j.foreco.2003.07.041.

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Kozgar, M. Imran, and Anwar Shahzad. "An improved protocol for micropropagation of teak tree (Tectona grandis L.)." Rendiconti Lincei 23, no. 2 (2012): 195–202. http://dx.doi.org/10.1007/s12210-012-0176-2.

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Tuloli, Riska, Hosea Jaya Edi, and Imam Jayanto. "FORMULASI SEDIAAN KRIM KOMBINASI EKSTRAK DAUN SELEDRI (Apium graveolens L.) DAN DAUN JATI (Tectona grandis Linn.F) SEBAGAI ANTIBAKTERI TERHADAP Staphylococcus aureus." PHARMACON 9, no. 2 (2020): 259. http://dx.doi.org/10.35799/pha.9.2020.29280.

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ABSTRACT Celery plants (Apium graveolens L.) and teak plants (Tectona grandis Linn.f) are plants that contain flavonoids, tannins, and saponins and has antibacterial activity against Staphylococcus aureus. This study aims to test the antibacterial effectiveness of combination of celery and teak leaf cream and evaluate cream with parameters of physical tests (organoleptic, homogeneity, pH, spreadability, adhesion) and physical stability with cycling test method. This study used an experimental laboratory method by making 5 variations concentration of extracts. Celery and teak leaf extract was extracted by maceration method. Antibacterial test used the wells method. Results of the evaluation of physical tests for organoleptic test (odor: a typical combination of extracts;color: brown;shape: semi-solid), homogeneity test (homogeneous), average of pH test is 6.02, dispersion test is 4.27 cm, adhesion test is 18.42 seconds. Based on the results of this study, concluded that the combination of celery leaf and teak leaf extract can be formulated into a cream. The cream of combination of celery and teak leafs extract are bacteriostatic and has antibacterial activity with an average diameter for formulation I 13.4 mm, formulation II 9.23 mm, formulation III 16.23 mm, formulation IV 11 mm, and formulation V 12.06 mm. Keywords : Celery (Apium graveolens L.), Teak (Tectona grandis Linn.f), Antibacterial, Cream. ABSTRAK Tanaman seledri (Apium graveolens L.) dan tanaman jati (Tectona grandis Linn.f) merupakan tanaman yang mengandung flavonoid, tanin dan saponin dan memiliki aktivitas antibakteri terhadap Staphylococcus aureus. Penelitian ini bertujuan untuk menguji aktivitas antibakteri sediaan krim kombinasi ekstrak daun seledri dan daun jati serta mengevaluasi sediaan krim dengan parameter uji sifat fisik (uji organoleptik, uji homogenitas, uji pH, uji daya sebar, uji daya lekat) dan stabilitas fisik dengan metode cycling test. Penelitian ini menggunakan metode eksperimental laboratorium dengan membuat 5 variasi konsentrasi ekstrak. Ekstrak diperoleh dengan cara maserasi. Uji antibakteri dilakukan dengan metode sumuran. Hasil evaluasi sifat fisik untuk uji organoleptik (bau: khas kombinasi ekstrak;warna:coklat;bentuk:setengah padat), uji homogenitas (susunan homogen), rata-rata uji pH 6,02, daya sebar 4,27 cm, daya lekat 18,42 detik. Berdasarkan hasil penelitian disimpulkan bahwa kombinasi ekstrak daun seledri dan daun jati dapat diformulasikan menjadi sediaan krim. Sediaan krim kombinasi ekstrak daun seledri dan daun jati bersifat bakteriostatik dan memiliki aktivitas antibakteri dengan diameter rata-rata untuk formula I 13,4 mm, formula II 9,23 mm, formula III 16,23 mm, formula IV 11 mm, dan formula V 12,06 mm. Kata Kunci : Seledri (Apium graveolens L.), Jati (Tectona grandis Linn.f), Antibakteri, Krim

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Charoensit, Pensri, Fangjan Sawasdipol, Natthawadee Tibkawin, Nungruthai Suphrom, and Nantaka Khorana. "Development of natural pigments from Tectona grandis (teak) leaves: Agricultural waste material from teak plantations." Sustainable Chemistry and Pharmacy 19 (April 2021): 100365. http://dx.doi.org/10.1016/j.scp.2020.100365.

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Choochuen, Thanapol, Warong Suksavate, and Ponthep Meunpong. "Development of a Taper Equation for Teak (Tectona grandis L.f.) Growing in Western Thailand." Environment and Natural Resources Journal 19, no. 3 (2021): 176–85. http://dx.doi.org/10.32526/ennrj/19/2020183.

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Teak is an important and valuable tropical hardwood species. In this study, we developed and evaluated suitable taper equations for teak growing in Western Thailand using a formulation of Goodwin cubic polynomial model combined with a bark thickness model. The best taper model calibration was selected based on goodness-of-fit and leave-one-out cross validation statistical testing. In total, 12 different model calibrations were tested, with Thong Pha Phum (TPP) 2 being the most suitable for teak in Western Thailand. The mean prediction error of three validation statistics: (prediction of diameter under bark given height; prediction of height given diameter under bark; and prediction of under bark volume given log length) were within 10% and the overall validation index was 5.454, which was the lowest when compared to other calibrations. A comparison of TPP 2 with a teak taper equation developed for Northern Thailand, using a graphical analysis of the stem shape and bark thickness, indicated that the teak trees growing in the two regions have similar stem shapes, but the trees in Western Thailand tend to have a thicker bark. These results will also help in further work as they indicate that bark thickness equations are particularly important.

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Xie, Cheng Ping, Kai Fu Li, Yong Li, Jin Ling Lin, and Kai Meng Xu. "Study on Volatile Substances of Different Provenances Teak(Tectona Grandis L.f) Wood by TGA." Advanced Materials Research 295-297 (July 2011): 88–92. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.88.

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The inherent odor of teak wood has repellent, and has an obvious effects on animals and human. In this work, the weight loss of volatile substances of different provenances teak including India, Nigeria and Thailand has been studied by TGA. The emmision of volatile substances starts at 30°C and ends at 100°C, lossing weight of the all samples are very less in the range of 100-200°C. When the temperature is in the range of 200-250°C, the hemi-cellulose and cellulose is pyrolyzed and the char starts to form. The results all the curves of TGA for the teak samples is similar, the sapwood losing weight is clearly higher than the heartwood for the same provenance teak. The volatile substances of sapwood are ranked as follows:V3071> V3070> V3072> V8024> V3074> V1009> V3078> V1007, and the heartwood: V3074> V3070> V1009> V8024> V3072> V3071> V3078> V1007.

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Jaybhaye, Deepali J., Prashant S. Chaudhary, Shruti Chandra, and Sukhmeen Johar. "Evaluation of anti-asthmatic and anti-cholinergic activity of ethanolic extract of Tectina grandis Linn. bark." International Journal of Basic & Clinical Pharmacology 9, no. 4 (2020): 572. http://dx.doi.org/10.18203/2319-2003.ijbcp20201179.

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Background: Asthma is a chronic disease that affects approximately 300 million people worldwide. Tectona grandis Linn. bark, also known as Teak (English), is traditionally used to treat asthma. However, the scientific data on anti-asthmatic and anti-cholinergic of this plant has got little attention. An attempt has been based on ethanolic extract of bark of Tectona grandis Linn. shown a tremendous effect on asthma when comparative study was done with normal and treated group.Methods: The anti-asthmatic activity of a 95% ethanol and 5% distilled water extract of dried and fresh Tectona grandis Linn. bark, was evaluated against histamine and acetylcholine-induced preconvulsive dyspnea (PCD) in guinea pigs fasted for 24 h were exposed to an atomized fine mist of 2% histamine dihydrochloride and acetylcholine aerosol (dissolved in normal saline) using nebulizer at a pressure of 300 mmHg in the histamine chamber (24×14×24 cm, made of perplex glass. They were divided in groups Mepyramin (8 mg/kg) intraperitonially, atropine aerosol and Tectona grandis bark formulation (2.5, 5, 10 gm/kg) were administered orally 30 min prior to exposure. Animals, which did not develop typical asthma within 6 minutes, were taken as protected.Results: Ethanolic extract of Tectona grandis Linn. bark at 5 and 10 gm/kg significantly reduce bronchoconstriction as compared to control group along with significant mast cell stabilization activity.Conclusions: In conclusion, the present study shows that the ethanolic bark extract of Tectona grandis Linn. has potential antiasthamatic and antichlolinergic action in histamine and acetylcholine broncocontraction in guinea pigs.

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Galeano, Esteban, Tarcísio Sales Vasconcelos, and Helaine Carrer. "Characterization of Cinnamyl Alcohol Dehydrogenase gene family in lignifying tissues of Tectona grandis L.f." Silvae Genetica 67, no. 1 (2018): 1–11. http://dx.doi.org/10.2478/sg-2018-0001.

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Abstract The cinnamyl alcohol dehydrogenase (CAD) enzyme catalyzes the last step of monolignols synthesis in the lignin pathway. Tectona grandis (teak) is a tropical tree with high valuable timber. As there is few genetic information about lignin formation in teak, the purpose of this study is to characterize members of CAD family in this species. As methodology, PCR amplification using cDNA samples, vector cloning, sequencing, bioinformatics analyses and gene expression studies using real time RT-qPCR were performed. As results, four members (TgCAD1- TgCAD4) were obtained. Comparative analyses showed that all of them have conserved residues for catalytic zinc action, structural zinc ligation, NADPH binding and substrate specificity, consistent with the mechanism of alcohol dehydrogenases. Phylogenetic analysis showed that TgCADs are present in three main classes and seven groups. Expression analyses revealed that TgCAD1 was highly expressed in leaves and could be related with pathogen defense. TgCAD2 was more expressed in branches and roots. Differently, TgCAD3 and TgCAD4 were highly expressed in juvenile and mature sapwood, suggesting a crucial role in wood development and lignin biosynthesis, with tissue-specialized expression profiles. Furthermore, TgCAD4 could be related with teak maturation for being more expressed in sapwood of mature teak trees. As conclusion, this work is the first to characterize genes of CAD family in Tectona grandis. These genes could be interesting to develop transgenic plants for basic research and field applications.

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