scholarly journals Speciation slowing down in widespread and long-living tree taxa: insights from the tropical timber tree genus Milicia (Moraceae)

Heredity ◽  
2014 ◽  
Vol 113 (1) ◽  
pp. 74-85 ◽  
Author(s):  
K Daïnou ◽  
G Mahy ◽  
J Duminil ◽  
C W Dick ◽  
J-L Doucet ◽  
...  
Keyword(s):  
Living Tree ◽  
Tropical Timber ◽  
Slowing Down ◽  
Timber Tree

scholarly journals Identifying dormancy class and storage behaviour of champak (Magnolia champaca) seeds, an important tropical timber tree

2013 ◽  
Vol 41 (2) ◽  
pp. 141 ◽  
Author(s):  
M Thilina R Fernando ◽  
KMG Gehan Jayasuriya ◽  
Jeffrey L Walck ◽  
ASTB Wijetunga
Keyword(s):  
Tropical Timber ◽  
Timber Tree ◽  
And Storage

scholarly journals Draft genome of a high value tropical timber tree, Teak (Tectona grandis L. f): insights into SSR diversity, phylogeny and conservation

DNA Research ◽  
2018 ◽  
Vol 25 (4) ◽  
pp. 409-419 ◽  
Author(s):  
Ramasamy Yasodha ◽  
Ramesh Vasudeva ◽  
Swathi Balakrishnan ◽  
Ambothi Rathnasamy Sakthi ◽  
Nicodemus Abel ◽  
...  
Keyword(s):  
Draft Genome ◽  
Tectona Grandis ◽  
Tropical Timber ◽  
Timber Tree

scholarly journals Propuesta de evaluación para asignar tentativamente riesgo de extinción (ETRE): el caso de Peltogyne mexicana (Leguminosae)

2018 ◽  
Vol 96 (4) ◽  
pp. 609
Author(s):  
Juan Carlos Montero-Castro ◽  
José Antonio Zuñiga-Zuñiga ◽  
Cuauhtémoc Sáenz-Romero ◽  
Nahum Modesto Sánchez-Vargas
Keyword(s):  
Extinction Risk ◽  
Distribution Area ◽  
Risk Category ◽  
Species At Risk ◽  
Tropical Timber ◽  
Risk Of Extinction ◽  
Timber Tree ◽  
Speed Up ◽  
Risk Situation ◽  
Method Of Evaluation

<p><strong>Background</strong>: The rates of extinction evaluations are slow in relation to the magnitude of the problem. In the case of plants, just about 6 % of the species have been evaluated. On the other hand, it has been determined that the extension of the distribution area is a good predictor of the extinction risk.</p><p><strong>Questions</strong>: Is it possible to speed up the estimate of extinction risk of plant species? Can risk estimates that consider only the area of distribution converge with estimates from already established methods?</p><p><strong>Taxon</strong>: <em>Peltogyne mexicana</em></p><p><strong>Study</strong> <strong>site</strong>: Guerrero, Mexico</p><p><strong>Methods</strong>: The Evaluation to Assign Tentatively Risk of Extinction (ETRE) was implemented comparing the area of occurrence (AOO), calculated with the GeoCat program, of the tropical timber tree <em>Peltogyne mexicana</em> against the AOO of other tropical trees (all Leguminosae) that are recognized with risk of extinction. The Method of Evaluation of Species at Risk (MER) was implemented and the results were compared.</p><p><strong>Results</strong>: With the implementation of the ETRE it was determined that <em>Peltogyne mexicana</em> has a high extinction risk, category that is confirmed with the MER implementation.</p><strong>Discussion</strong>: The suitability of the ETRE is based on the fact that several predictors of the risk of extinction are dependent on the size of the distribution area and that the estimate of the distribution area is amply accepted through the AOO. The ETRE is impartial, easily replicable, which can be implemented previously to evaluations more scrupulous, such as the MER. Actions are suggested to alleviate the risk situation of <em>Peltogyne mexicana</em>.

scholarly journals Multiple Shoot Production In Vitro of the Tropical Timber Tree, Sentang (Azadirachta excelsa Linn.)

HortScience ◽  
1998 ◽  
Vol 33 (6) ◽  
pp. 1073-1075 ◽  
Author(s):  
T.K. Liew ◽  
C.K.H. Teo
Keyword(s):  
Sodium Hypochlorite ◽  
Multiple Shoot ◽  
Axillary Buds ◽  
Naphthaleneacetic Acid ◽  
Ms Medium ◽  
Tropical Timber ◽  
Shoot Production ◽  
Timber Tree

Axillary buds from 5-month-old seedlings of Azadirachta excelsa Linn. were surface-sterilized twice with 1.35% (m/v) and 1.05% (m/v) of sodium hypochlorite for 25 and 15 minutes, respectively, before culturing on Murashige and Skoog (MS) medium containing combinations of BA and NAA. A combination of 4.4 μM BA + 0.5 μM NAA induced the most axillary buds to grow (eight per explant). Subsequent proliferation of the micropropagated shoots on this medium yielded abnormal shoots. The best medium for maximum proliferation of these micropropagated shoots contained 3.3 μM BA and 0.27 μM NAA. On this medium about four normal shoots were produced per explant. These findings indicate that two different media are needed for successful micropropagation of sentang. Chemical names used: N6-benzylaminopurine (BA); 1-naphthaleneacetic acid (NAA).

Adventitious shoot induction from adult tissues of the tropical timber tree yellow Ipé primavera (Tabebuia donnell-smithii rose [bignoniaceae])

2010 ◽  
Vol 46 (5) ◽  
pp. 411-421 ◽  
Author(s):  
José A. González-Rodríguez ◽  
Francisco Ramírez-Garduza ◽  
Manuel L. Robert ◽  
Aileen O’Connor-Sánchez ◽  
Yuri Jorge Peña-Ramírez
Keyword(s):  
Adventitious Shoot ◽  
Shoot Induction ◽  
Tropical Timber ◽  
Adult Tissues ◽  
Timber Tree

scholarly journals The first complete chloroplast sequence of a major tropical timber tree in the Meranti family: Vatica odorata (Dipterocarpaceae)

2017 ◽  
Vol 2 (1) ◽  
pp. 52-53 ◽  
Author(s):  
Tijana Cvetković ◽  
Damien Daniel Hinsinger ◽  
Joeri Sergej Strijk
Keyword(s):  
Tropical Timber ◽  
Timber Tree

scholarly journals Response of Four Species of Tropical Timber Seedlings to Urea and Folivert Fertilisers in Nursery.

2019 ◽  
Vol 9 ◽  
pp. 1579-1593
Author(s):  
Egbe Enow Andrew ◽  
Tata Blessing Limbi ◽  
Enow Elsie Ayamoh
Keyword(s):  
Growth Performance ◽  
Chlorophyll Concentration ◽  
Fertilizer Application ◽  
Tree Seedlings ◽  
Tropical Timber ◽  
Randomized Design ◽  
Growth Performances ◽  
Top Soil ◽  
Timber Tree ◽  
High Doses

This study explores the effects of different levels of urea and folivert (composite fertilizer) on seedlings growth and chlorophyll concentration of Albizia zygia, Blighia welwitschii, Lophira alata and Pterocarpus soyauxii. The rate of fertilizer application per 5.87kg pot with topsoil was 3, 6, and 9g of both urea and composite fertilizer and a control (top soil only) and it was a complete randomized design. Results indicated that plants treated with 3g of urea produced the highest number of leaves in Albizia zygia seedlings only while 9g of composite fertilizer had the best growth performance in all the other growth variables.  Albizia zygia and Blighia welwitschii, seedlings had the best results in soil treated with 6g of composite fertilizer, while Lophira alata and Pterocarpus soyauxii seedlings showed best growth in soils treated with 9g of composite fertilizers for all other parameters. Seedlings of species supplied with 9g of urea gave poorest growth performance.  Low root/shoot ratios were obtained for all seedlings except for those of Albizia zygia treated with 6 and 9g of urea that had root/shoot ratios greater than 1.0. The effect of fertilizers on chlorophyll concentration was significantly different only for L. alata (P=0.05). This study therefore brings to light the need to fertilize timber tree seedlings in order to improve on their early growth performances in the field and high doses of nitrogen should be discourage.

scholarly journals Effect of pretreatments on germination of seeds of the timber plant, Terminalia ivorensis and Mansonnia altissima (A. Chev.)

2020 ◽  
Vol 12 (2) ◽  
pp. 334-340
Author(s):  
Peter J. CHIKA ◽  
Ayobola M. SAKPERE ◽  
Michael S. AKINROPO
Keyword(s):  
Treatment Group ◽  
Analysis Of Variance ◽  
Hot Water ◽  
High Humidity ◽  
Percentage Germination ◽  
River Sand ◽  
Forest Reserve ◽  
Tropical Timber ◽  
Timber Tree

Terminalia ivorensis and Mansonnia altissima is an important tropical timber tree plant, but poor germination is an important factor militating its regeneration. Effects of pretreatments on germination of seeds of Terminalia ivorensis and Mansonia altissima were studied. Four hundered and eighty matured seeds of Terminalia ivorensis and three hundred and sixty seeds of Mansonia altissima were obtained from Forest Reserve Institute of Nigeria (FRIN), Ibadan. The seeds were divided into twenty-one equal portions of 10 seeds each. Twelve pretreatments were investigated on Terminalia ivorensis and nine pretreatments on Mansonia altissima. The seeds were sown inside plastic basket containing sterilized river sand under high humidity propagator with four replicates each. Germination counts were taken daily for eighty days. Percentage germination was computed for each treatment and the data were subjected to analysis of variance. Germination was first observed among the scarified Terminalia ivorensis seeds at 14 days after sowing (DAS) and this treatment group had the highest percentage germination of 82.5%, while seeds soaked in hot water recorded the least germination. Germination was first observed in decoated Mansonia altissima and this treatment group had the highest percentage germination of 45%, whereas the least was observed among the treatments with H­2SO4. The effect of pretreatment was highly significant (p≤0.05) on the germination of both species. It is therefore recommended that mechanical scarification of Terminalia ivorensis and decoating seed of Mansonia altissima will enhance the germination of the two species.

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