scholarly journals Integrated Characterization of Cuban Germplasm of Cocoyam (Xanthosoma Sagittifolium (L.) Schott)

2018 ◽  
Vol 1 (1) ◽  
pp. 1-18
Author(s):  
Marilys D. Milián Jiménez ◽  
Osmany Molina Concepción ◽  
Yadelys Figueroa Aguila
Keyword(s):  
Core Collection ◽  
Germplasm Collection ◽  
Qualitative And Quantitative ◽  
Xanthosoma Sagittifolium ◽  
Characterization Studies ◽  
Research Institute

The present study aims at integrating the characterization studies conducted on the Cuban germplasm collection of Xanthosoma sagittifolium (Araceae) preserved in the Research Institute of Tropical Roots and Tubers Crops (INIVIT). Differentiation of accessions was done by combining qualitative and quantitative descriptors to clarify the relationships between six well-defined groups. The results may be used to establish a core collection for improved management of Xanthosoma spp. germplasm.

scholarly journals Karakterisasi Plasma Nutfah Kangkung

2016 ◽  
Vol 12 (1) ◽  
pp. 30
Author(s):  
Yenni Kusandriyani ◽  
NFN Luthfy
Keyword(s):  
Genetic Resources ◽  
Germplasm Collection ◽  
Dry Season ◽  
Breeding Program ◽  
Stable Manure ◽  
High Yielding Varieties ◽  
Program Description ◽  
Research Institute

<p>Characterization of Ipomoea reptans germplasm collection were done in order to describe the accessions and to utilize as working collection materials for breeding program. Description was aimed to identify the new collections of 15 accessions I. reptans which were taken from IVEGRI (Indonesia Vegetable Goverment Research Institute) germplasm collection. The experiment was carried out in Subang station (100 m asl) in dry season 2002. Each accession were planted 40 plant per plot of I. reptans with plant distance 20 x 30 cm. The plants of were fertilized with stable manure 20 t/ha and NPK (15 : 15 : 15) 500 kg/ha. The result of the study was a description of genetic resources that will be exchanged and utilized in breeding for high yielding varieties of I. reptans with better quality.</p><p> </p><p><strong>Abstrak</strong></p><p>Karakterisasi plasma nutfah kangkung dilakukan untuk mendapatkan deskripsi sifat tanaman dan sebagai bahan working collection yang akan digunakan sebagai bahan dalam program pemuliaan. Penelitian mencakup 15 nomor aksesi kangkung di Kebun Percobaan Subang (100 m dpl) Jawa Barat pada musim kemarau 2002, tiap nomor dari masing-masing aksesi ditanam sebanyak 40 tanaman. Tanaman diberi pupuk kandang domba dengan takaran 20 t/ha dan NPK (15 : 15 : 15) 500 kg/ha. Hasil penelitian ini menghasilkan deskripsi plasma nutfah tanaman kangkung untuk pertukaran informasi mengenai sumber genetik yang akan digunakan dalam pemuliaan untuk mendapatkan varietas unggul dengan kualitas yang lebih baik.</p>

scholarly journals PENGELOMPOKAN PLASMA NUTFAH RAMBUTAN BERDASARKAN KARAKTER MORFOLOGI

2016 ◽  
Vol 25 (1) ◽  
pp. 81
Author(s):  
NFn Kuswandi ◽  
NFn Nofiarli ◽  
Andre Sparta ◽  
Mega Andini ◽  
Sri Hadiati ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Germplasm Collection ◽  
Fruit Weight ◽  
Soluble Solids ◽  
High Yield ◽  
Commercial Variety ◽  
Tropical Fruit ◽  
High Diversity ◽  
Research Institute

Rambutan is a fruit native to Indonesia, which has a high diversity. Indonesian Tropical Fruit Research Institute has a rambutan germplasm collection. The objectives of the research were to identify and classify rambutan germplasm accessions based on morphological characteristics, in order to identify the specific characteristics important for the development of future varieties of rambutan. Collecting data on the 32 accession was conducted in Aripan Experimental Field, Indonesian Tropical Fruit Research Institute from September 2014 to February 2015. Characterization of morphology characters referred to as the Descriptor for Rambutan was published by IPGRI. Cluster analysis based on morphological characteristics successfully separated the accession of rambutan R7 and R11 with 30 other rambutan accessions with the dissimilarity coefficient of 45%. Accession R4 was similar to Sitangkue, R14 was similar to Korong Gadang, and R15 was similar to Sinyonya. Characteristics that can be used to distinguish each of the accession of rambutan were the width of seed, seed thickness, total soluble solids (TSS), fruit diameter, spintern texture and the spintern color. Accession R15 can be developed as a commercial variety, because it has a high yield, and shelf life associated with high fruit weight characteristics and thick rind.

scholarly journals Graphene, an Interesting Nanocarbon Allotrope for Biosensing Applications: Advances, Insights, and Prospects

2021 ◽  
Vol 12 ◽  
pp. 117959722098382
Author(s):  
Farid Menaa ◽  
Yazdian Fatemeh ◽  
Sandeep K Vashist ◽  
Haroon Iqbal ◽  
Olga N Sharts ◽  
...  
Keyword(s):  
Cost Effective ◽  
Genetic Alterations ◽  
Multiplex Detection ◽  
Quantitative Characterization ◽  
Disease Biomarkers ◽  
Qualitative And Quantitative ◽  
Sensing Systems ◽  
Doped Graphene ◽  
Bioanalytical Applications

Graphene, a relatively new two-dimensional (2D) nanomaterial, possesses unique structure (e.g. lighter, harder, and more flexible than steel) and tunable physicochemical (e.g. electronical, optical) properties with potentially wide eco-friendly and cost-effective usage in biosensing. Furthermore, graphene-related nanomaterials (e.g. graphene oxide, doped graphene, carbon nanotubes) have inculcated tremendous interest among scientists and industrials for the development of innovative biosensing platforms, such as arrays, sequencers and other nanooptical/biophotonic sensing systems (e.g. FET, FRET, CRET, GERS). Indeed, combinatorial functionalization approaches are constantly improving the overall properties of graphene, such as its sensitivity, stability, specificity, selectivity, and response for potential bioanalytical applications. These include real-time multiplex detection, tracking, qualitative, and quantitative characterization of molecules (i.e. analytes [H2O2, urea, nitrite, ATP or NADH]; ions [Hg2+, Pb2+, or Cu2+]; biomolecules (DNA, iRNA, peptides, proteins, vitamins or glucose; disease biomarkers such as genetic alterations in BRCA1, p53) and cells (cancer cells, stem cells, bacteria, or viruses). However, there is still a paucity of comparative reports that critically evaluate the relative toxicity of carbon nanoallotropes in humans. This manuscript comprehensively reviews the biosensing applications of graphene and its derivatives (i.e. GO and rGO). Prospects and challenges are also introduced.

A Core Collection for the United States Annual Medicago Germplasm Collection

Crop Science ◽  
1994 ◽  
Vol 34 (1) ◽  
pp. 279-285 ◽  
Author(s):  
Noa Diwan ◽  
Gary R. Bauchan ◽  
Marla S. McIntosh
Keyword(s):  
United States ◽  
Core Collection ◽  
Germplasm Collection ◽  
The United States ◽  
Annual Medicago

Preliminary Preparation and Characterization Studies of Cellulose from Merbau (Intsia bijuga)

2012 ◽  
Vol 620 ◽  
pp. 314-319
Author(s):  
Nur Amira Mamat Razali ◽  
Fauziah Abdul Aziz ◽  
Saadah Abdul Rahman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Alkaline Treatment ◽  
Raw Material ◽  
X Ray Diffraction ◽  
X Ray ◽  
Preliminary Preparation ◽  
Characterization Studies ◽  
Scanning Electron

Hardwood is wood from angiosperm trees. The characteristic of hardwood include flowers, endosperm within seeds and the production of fruits that contain the seeds. This paper aims to discuss the preparation and characterization of cellulose obtained from hardwood. The hardwood Merbau (Intsia bijuga) was chosen as raw material in this study. Alkaline treatment and delignification methods were used for the preparation of cellulose. Acid hydrolysis was employed to produce cellulose nanocrystal (CNC). The treated and untreated samples were characterized using x-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The final product, from both trated and untreated samples were then compared.

scholarly journals In-depth genome characterization of a Brazilian common bean core collection using DArTseq high-density SNP genotyping

BMC Genomics ◽  
2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Paula A. M. R. Valdisser ◽  
Wendell J. Pereira ◽  
Jâneo E. Almeida Filho ◽  
Bárbara S. F. Müller ◽  
Gesimária R. C. Coelho ◽  
...  
Keyword(s):  
Common Bean ◽  
Core Collection ◽  
High Density ◽  
Snp Genotyping ◽  
Genome Characterization

scholarly journals Genetic diversity of table grape based on morphoagronomic traits

2011 ◽  
Vol 68 (1) ◽  
pp. 42-49 ◽  
Author(s):  
Patrícia Coelho de Souza Leão ◽  
Cosme Damião Cruz ◽  
Sérgio Yoshimitsu Motoike
Keyword(s):  
Genetic Diversity ◽  
Clustering Analysis ◽  
Germplasm Collection ◽  
Table Grape ◽  
Cluster Method ◽  
Breeding Programs ◽  
Method Analysis ◽  
Vitis Spp ◽  
Grape Cultivars

The conservation and characterization of grape (Vitis spp) genetic resources in germplasm banks have been the basis of its use in breeding programs that result in development of new cultivars. There are at least 10,000 grape cultivars kept in germplasm collection. The genetic diversity in 136 table grape accessions from the state of Bahia, Brazil, was evaluated. Continuous and discrete morphoagronomic traits were assessed. The clustering analysis by the Tocher otimization method resulted in 30 clusters (considering continuous morphoagronomic traits), and 9 clusters (taking into consideration multicategorical traits). There was no agreement between clusters obtained by both, continuous or discrete phenotypic descriptors, independent of the cluster method analysis used. A satisfactory genetic variability among the table grape accessions was observed.

Qualitative and Quantitative Characterization of Airport-related Ultrafine Particles using Liquid Chromatography – High-Resolution Mass Spectrometry (UHPLC/HRMS)

2021 ◽  
Author(s):  
Florian Ungeheuer ◽  
Diana Rose ◽  
Dominik van Pinxteren ◽  
Florian Ditas ◽  
Stefan Jacobi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Ultrafine Particles ◽  
Chemical Characterization ◽  
Engine Oil ◽  
Aircraft Emissions ◽  
Jet Engine ◽  
Qualitative And Quantitative ◽  
Ionization Mode ◽  
Lubrication Oils

&lt;p&gt;We present the results from a chemical characterization study of ultrafine particles (UFP), collected nearby Frankfurt International Airport where particle size distribution measurements showed high number concentrations for particles with a diameter &lt;50 nm. Aluminium filter samples were collected at an air quality monitoring station in a distance of 4 km to Frankfurt airport, using the 13-stage cascade impactor Nano-MOUDI (MSP Model-115). The chemical characterization of the ultrafine particles in the size range of 0.010-0.018 &amp;#956;m, 0.018-0.032 &amp;#956;m and 0.032-0.056 &amp;#956;m was accomplished by the development of an optimized filter extraction method. An UHPLC method for chromatographic separation of homologous series of hydrophobic and high molecular weight organic compounds, followed by heated electrospray ionization (ESI) and mass analysis using an Orbitrap high-resolution mass spectrometer was developed. Using a non-target screening, ~200 compounds were detected in the positive ionization mode after filtering, in order to ensure high quality of the obtained data. We determined the molecular formula of positively charged adducts ([M+H]&lt;sup&gt;+&lt;/sup&gt;; [M+Na]&lt;sup&gt;+&lt;/sup&gt;), and for each impaction stage we present molecular fingerprints (Molecular weight vs Retention time, Kroll-diagram, Van-Krevelen-diagram, Kendrick mass defect plot) in order to visualize the complex chemical composition. The negative ionization mode led only to the detection of a few compounds (&lt;20) for which reason the particle characterization focuses on the positive ionization mode. We found that the majority of detected compounds belong to homologous series of two different kinds of organic esters, which are base stocks of aircraft lubrication oils. In reference to five different jet engine lubrication oils of various manufacturers, we identified the corresponding lubricant base stocks and their additives in the ultrafine particles by the use of matching retention time, exact mass and MS/MS fragmentation pattern of single organic molecules. As the relevance of the chemical composition of UFP regarding human health is depending on the mass contribution of each compound we strived for quantification of the jet engine oil compounds. This was achieved by standard addition of purchased original standards to the native sample extracts. Two amines serving as stabilizers, one organophosphate used as an anti-wear agent/metal deactivator and two ester base stocks were quantified. Quantification of the two homologous ester series was carried out using one ester compound and cross-calibration. The quantitative determination is burdened by the uncertainty regarding sampling artefacts in the Nano-MOUDI. Therefore we characterized the cascade impactor in a lab experiment using the ester standard. Particle size distribution measurements conducted parallel to the filter sampling enables the determination of jet engine oil contribution to the UFP mass. Results indicate that aircraft emissions strongly influence the mass balance of 0.010-0.018 &amp;#956;m particles. This contribution decreases for bigger sized particles (0.018-0.056 &amp;#956;m) as presumably more sources get involved. The hereby-introduced method allows the qualitative and quantitative assignment of aircraft emissions towards the chemical composition and total mass of airport related ultrafine particles.&lt;/p&gt;

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