scholarly journals Chemotaxonomic Study in the Heartwood of Javanese Teak: Analysis of Quinones and Other Related Components

2017 ◽  
Vol 3 (1) ◽  
pp. 30-35
Author(s):  
Ganis Lukmandaru
Keyword(s):  
Discriminant Analysis ◽  
Palmitic Acid ◽  
Geographical Distribution ◽  
Plantation Forest ◽  
Community Forest ◽  
Forest Regions ◽  
Chemotaxonomic Study

Ethanol-benzene soluble extracts from the heartwood collected from 87 individual teak trees grown in the island of Java were analyzed using GC and GC-MS. The variations of quinones (tectoquinone, deoxylapachol, isodeoxylapachol, lapachol, tectol) and other components (palmitic acid, squalene, and two unknown compounds) were investigated for a chemotaxonomical study. There were wide variations in the contents of the constituents among individuals from three habitats, Purwakarta (plantation forest), Randublatung (plantation forest)  and  Gunungkidul (community forest)  regions. Cluster  and  discriminant analysis  results  showed  that  teak  trees  can  be  classified  into  three  clusters  based  on  the composition of quinones and squalene. Cluster I was distinguished by relatively high amount of squalene and low amount of quinones. In contrast, high amount of tectoquinone and low amount of squalene was observed in cluster III. Further, comparatively high amount of naphtaquinones (lapachol, deoxylapachol and its isomer) and tectol was found in cluster II. Based on geographical distribution, Purwakarta, Randublatung, and Gunungkidul regions mostly produce cluster II, I, and III type individuals, respectively.

Variabilité génétique et morphologique de cinq populations de l'écrevisse européenne Austropotamobius pallipes (Lereboullet 1858) (Crustacea, Decapoda)

1985 ◽  
Vol 63 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Jean Attard ◽  
Régis Vianet
Keyword(s):  
Discriminant Analysis ◽  
Genetic Distance ◽  
Geographical Distribution ◽  
Population Group ◽  
Southern Population ◽  
Austropotamobius Pallipes ◽  
Complete Study ◽  
Starch Gel ◽  
Electrophoretic Techniques ◽  
Good Agreement

Genetic and morphometric variability was compared for five populations of the European crayfish Austropotamobius pallipes. The good agreement of results leads to a pattern of differentiation consistent with the geographical distribution of the samples. The analysis of enzymatic polymorphism, using electrophoretic techniques on starch gel, shows a very small heterozygosity level. The genetic distance, established from allelic frequencies of 18 loci, distinguishes the populations of Haute-Saône and Ireland from a southern population group (Hérault, Gard, Haute-Corse). The examination of eight meristic and morphometric variables and the calculation of the coefficients of racial likeness also point out this highly distinctive southern group. The results of the discriminant analysis show that four of these variables could be used in a more complete study of the populations of Austropotamobius pallipes.

scholarly journals Bark Characteristics of Acacia auriculiformis A. Cunn. ex Benth. and Acacia mangium Willd. From Industrial Plantation Forest

2020 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
Sri Mutiar ◽  
Anwar Kasim ◽  
Emriadi ◽  
Alfi Asben
Keyword(s):  
Chemical Composition ◽  
Physical Properties ◽  
Palmitic Acid ◽  
Water Content ◽  
Fiber Quality ◽  
Acacia Mangium ◽  
Acacia Auriculiformis ◽  
Plantation Forest ◽  
Extractive Substance ◽  
Industrial Plantation

Increasing the value of bark can be known through the characteristics of the bark such as physical properties, the grade of fiber quality and the chemical composition of the bark. The purpose of this study is to find out the characteristics of the bark of the acacia plant species (i.e. Acacia auriculiformis and Acacia mangium) of Industrial Plantation Forest. The characteristics of the bark observed includes physical properties, quality grade of fiber and chemical composition. The results of this study showed that the bark density, thickness and water content of A. auriculiformis were 1.18g/cm3, 1.55 mm and 35.27% respectively, while, the bark density, thickness and water content of A. mangium were  0.95 g/cm3, 1.23 mm and 48.21% respectively. The fiber qualities of both plants are classified as grade III.  The extractive substance levels of A. auriculiformis and A. mangium were 23.06% and 20.63%, respectively. Based on the analysis with GCMS it can be seen that the main compounds dissolve-hexane from species A. auriculiformis were 2-phenyl phenol 33.6% and palmitic acid 13.5%. In the species A. mangium the main compounds soluble n-hexane were palmitic acid 28.97% and oleic acid 21.43%. The results of the analysis showed that these two bark species could potentially to be adhesives materials, tanning agent, particle boards, and inhibitors at the rate of corrosion of steel.

scholarly journals Fatty Acid Profiling and Chemometric Analyses for Zanthoxylum Pericarps from Different Geographic Origin and Genotype

Foods ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1676
Author(s):  
Yao Ma ◽  
Jieyun Tian ◽  
Xiaona Wang ◽  
Chen Huang ◽  
Mingjing Tian ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Discriminant Analysis ◽  
Palmitic Acid ◽  
Soil Conditions ◽  
Potential Health ◽  
Geographical Variations ◽  
Fatty Acid Profiling

Zanthoxylum plants, important aromatic plants, have attracted considerable attention in the food, pharmacological, and industrial fields because of their potential health benefits, and they are easily accessible because of the wild distribution in most parts of China. The chemical components vary with inter and intraspecific variations, ontogenic variations, and climate and soil conditions in compositions and contents. To classify the relationships between different Zanthoxylum species and to determine the key factors that influence geographical variations in the main components of the plant, the fatty acid composition and content of 72 pericarp samples from 12 cultivation regions were measured and evaluated. Four fatty acids, palmitic acid (21.33–125.03 mg/g), oleic acid (10.66–181.37 mg/g), linoleic acid (21.98–305.32 mg/g), and linolenic acid (0.06–218.84 mg/g), were the most common fatty acid components in the Zanthoxylum pericarps. Fatty acid profiling of Zanthoxylum pericarps was significantly affected by Zanthoxylum species and geographical variations. Stearic acid and oleic acid in pericarps were typical fatty acids that distinguished Zanthoxylum species based on the result of discriminant analysis (DA). Palmitic acid, palmitoleic acid, trans-13-oleic acid, and linoleic acid were important differential indicators in distinguishing given Zanthoxylum pericarps based on the result of orthogonal partial least squares discriminant analysis (OPLS-DA). In different Zanthoxylum species, the geographical influence on fatty acid variations was diverse. This study provides information on how to classify the Zanthoxylum species based on pericarp fatty acid compositions and determines the key fatty acids used to classify the Zanthoxylum species.

Variation in thallus morphology in response to climatic and geographical distribution in an Usnea complex

1992 ◽  
Vol 24 (3) ◽  
pp. 229-248 ◽  
Author(s):  
G. Nell Stevens
Keyword(s):  
Discriminant Analysis ◽  
Geographical Distribution ◽  
Canonical Discriminant Analysis ◽  
Chemical Characteristics ◽  
Climatic Data ◽  
Climatic Regions

AbstractThe morphological, anatomical and chemical characteristics of five taxa of Usnea (e.g.U. scabrida, U. elegans, U. molliuscula, U. queenslandica and U.ramulosissima), which belong to the U. scabrida- U. molliuscula complex are described.Usnea scabrida subsp. tayloriana is described as new. Usnea elegans and U.queenslandica are reduced to subspecies: U. scabrida subsp.elegans and U. molliuscula subsp. queenslandica. The species U. consimilis Stirton is considered synonymous with U. scabrida. A canonical discriminant analysis of geographic and climatic data was undertaken, which demonstrated that the species under investigation generally occupied discrete non-overlapping zones, indicating that the differences in thallus morphology correlated with particular climatic regions.

scholarly journals Diversity patterns of ground beetles and understory vegetation in mature, secondary, and plantation forest regions of temperate northern China

2015 ◽  
Vol 5 (3) ◽  
pp. 531-542 ◽  
Author(s):  
Yi Zou ◽  
Weiguo Sang ◽  
Shunzhong Wang ◽  
Eleanor Warren-Thomas ◽  
Yunhui Liu ◽  
...  
Keyword(s):  
Northern China ◽  
Ground Beetles ◽  
Understory Vegetation ◽  
Plantation Forest ◽  
Diversity Patterns ◽  
Forest Regions

scholarly journals ARAHAN PENGELOLAAN BLOK PEMANFAATAN KESATUAN PENGELOLAAN HUTAN LINDUNG (KPHL) UNIT VI PADA AREAL MODEL MIKRO DAS (MDM) TALAWAAN

2019 ◽  
Vol 15 (3) ◽  
pp. 529
Author(s):  
Badrun ,. Zaini ◽  
Bobby Vian Jhon Polii ◽  
Hengki Djemie Walangitan
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Forest Management ◽  
Land Tenure ◽  
Geographic Information ◽  
Management Model ◽  
Community Forest Management ◽  
Plantation Forest ◽  
Community Forest ◽  
Target Value

This study aims to: (1) Analyze management models with Geographic Information Systems (GIS), (2) Arrange alternative directions for priority management with a combination of GIS and Analytical HirarchyProcess (AHP) and policy direction of land tenure in forest areas that are in the utilization block KPHL Unit VI which is in Talawaan MDM. The method used in this study is a survey method, namely: a method forobtaining field data by means of systematic observation, measurement and recording of the object under study and supported by the results of laboratory analysis. Sampling and field measurements are carried out using strata techniques with consideration to adjusting the location of the collection. Analysis of the data used: a) Estimating the amount of erosion using the formula Universal Soil Loss Equation (USLE), b) The combination of Geographic Information Systems and Analytical Hierarchy Process (AHP) is used to prepare alternatives for decision making. The results of this study indicated that the Management Model formed in the study area is the Community Forest Management Model (HKm) and Community Plantation Forest (HTR) and with a management period of 35 years and can be extended thereafter. Furthermore, the direction of management priorities according to AHP analysis with economic, ecological and social targets is to implement a management model with Land Utilities Type (LUT) Agrorestry, enrichment LUT and reforestation LUT with an economic target value of 429 points, ecological target value of 143 points and weight social target value of 429 points. The direction of the Government's policy for the completion of land tenure in this forest area is to provide management access to forest areas in the form of Social Forestry Program with the Community Forest Management Model (HKm) and Community Plantation Forest (HTR).*eprm*

scholarly journals Genetic diversity of Sterculia quadrifida in Kupang, Indonesia based on RAPD (Random Amplified Polymorphic DNA) markers

2020 ◽  
Vol 21 (7) ◽  
Author(s):  
Uslan Uslan ◽  
MADE PHARMAWATI
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution ◽  
Dna Markers ◽  
Rapd Markers ◽  
Random Amplified Polymorphic Dna ◽  
Mixed Forest ◽  
Similarity Coefficient ◽  
Community Forest ◽  
High Genetic Diversity ◽  
Ctab Method

Abstract. Uslan, Pharmawat M. 2020. Genetic diversity of Sterculia quadrifida in Kupang, Indonesia based on RAPD (Random Amplified Polymorphic DNA) markers. Biodiversitas 21: 3407-3414. This study aims to determine the genetic diversity of Sterculia quadrifida R.Br. in Kupang based on RAPD markers. Samples of S. quadrifida were collected from the yard and community forest in Kupang City (Sub-districts of Oebobo, Kelapa Lima, Maulafa, and Alak) and mixed forest in the Kupang District (Sub-districts of Kupang Barat, Nekamese, Taebenu, and Fatuleu). DNA was isolated by the CTAB method and amplified by six RAPD primers (OPD-11, OPF-11, UBC-106, UBC-127, UBC-250, and OPB-04). The data were analyzed in the MVSP software using UPGMA method and Nei & Li similarity coefficient. Total of 131 DNA bands ranging from 250-1400 bp was obtained. Populations of S. quadrifida in Kupang were divided into two main clusters and 12 sub-clusters with. The highest genetic diversity was found in Kelapa Lima of 0.1050, while the lowest genetic diversity was found in S. quadrifida population in Fatuleu of 0.0305. The population of S. quadrifida in Kupang has high genetic diversity and also clustered based on their geographical distribution

An Introduction to Discriminant Analysis

1989 ◽  
Vol 22 (3) ◽  
pp. 158-168 ◽  
Author(s):  
Carl J Huberty ◽  
Richard M. Barton
Keyword(s):  
Discriminant Analysis
Sign in / Sign up

Export Citation Format

Share Document