scholarly journals Comparative analysis of morphological characteristics of beech leaves from the European provenance trial

2019 ◽  
pp. 145-174
Author(s):  
Marina Nonic ◽  
Dijana Cortan ◽  
Tatjana Batalo ◽  
Mirjana Sijacic-Nikolic
Keyword(s):  
Comparative Analysis ◽  
Genetic Variability ◽  
Morphological Characteristics ◽  
Climatic Conditions ◽  
Genetic Constitution ◽  
Provenance Trial ◽  
Morphological Markers ◽  
Mean Values ◽  
Leaf Characteristics ◽  
The Mean

The paper presents the results of the research conducted within the European provenance beech trial, in the Teaching Base of the Faculty of Forestry - Debeli Lug. To assess the inter- -provenance genetic variability of beech, using morphological markers, and comparative analysis of the results obtained in two successive years, 10 trees per each selected provenance were sampled. Thirty leaves were collected from each tree (total of 300 leaves per provenance per year). The inter-provenance differences of all morphological leaf characteristics were statistically significant and can be assumed to be the result of the genetic constitution of the provenances themselves. Based on the comparative analysis of the morphological characteristics of beech leaves from 13 different provenances in two research years, it was found that the mean values of most analyzed morphological characteristics were higher in 2017, compared to the results from 2016. Such results could be explained by the different climatic conditions that prevailed in the provenance trial in research years.

scholarly journals The Quality Assessment of Stored Red Blood Cells Probed Using Atomic-Force Microscopy

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
I. M. Lamzin ◽  
R. M. Khayrullin
Keyword(s):  
Red Blood Cells ◽  
Blood Cells ◽  
Morphological Characteristics ◽  
High Increase ◽  
Mean Values ◽  
Force Microscopy ◽  
Atomic Force ◽  
The Mean ◽  
The Moment

At the moment the suitability of stored red blood cells (sRBC) for transfusion is checked by routine methods such as haemoglobin estimation and the level of haemolysis. These methods cannot characterize directly the quality of the membranes of sRBC. The aim of this work is to assess the quality of sRBC based on such criteria as the membrane’s stiffness and the size and the form of sRBC. Materials and Methods. We have investigated 5 series of dry cytosmears of the sRBC which had been kept in blood bank in a period from 1 to 35 days. After AFM imaging, in every specimen, 5 RBC were chosen at random; the diameter, the height, and the stiffness were measured on each of them. Results. The present study shows high increase of the mean values of YM and height of RBC after 35 days of storage and decrease of the mean values of their diameter. Conclusion. Statistically significant high increase of the mean values of YM indicates the decrease of the elasticity of the cells in the course of storing of the RBC. This parameter along with the morphological characteristics can be used as criterion for assessment of applicability of the sRBC for blood transfusion.

scholarly journals Genetic Variability and Diversity Analysis in Pod and Seed Characters of Some Neglected and Underutilized Legumes (NULs)

2019 ◽  
pp. 1-8
Author(s):  
J. O. Agbolade ◽  
T. P. Olakunle ◽  
K. M. Popoola ◽  
J. A. Idowu ◽  
A. I. Isiaka ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Principal Component ◽  
Morphological Characters ◽  
Morphological Data ◽  
Diversity Analysis ◽  
International Institute ◽  
Mean Values ◽  
The Mean ◽  
Pod Length ◽  
100 Seed Weight

In response to the paucity of information challenge on the neglected and underutilized legumes, this paper explored pods and seeds morphological data of the twenty-four accessions of these crops with a view to establishing the occurrence of genetic variability and diversity analysis among the studied taxa. Twenty-four accessions of neglected and underutilized legumes (NULs) obtained from International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria were assessed for genetic variability and diversity analysis through Pod and seed morphological characters. Each accession was planted into plot of 5 ridges of 5 meter long, spaced 1 meter apart and replicated three times at the teaching and research farm of the Federal University Oye Ekiti, Ekiti State, Nigeria. Descriptive statistics was employed to evaluate differences in the mean values of the accessions while discriminatory traits among accessions were identified by Principal Component Analysis (PCA). Similarities among the studied plants were assessed by cluster analysis. The first two principal component axes explained 72% of the total variation. Pod length, pod width and 100-seed weight were traits that contributed most of the variations in the legume accessions. There was a display of intra-species similarities and inter-specific genetic diversity among the studied accessions.

scholarly journals Genetic variability in peas (Pisum sativum L.) from Turkey asssessed with molecular and morphological markers

2019 ◽  
Vol 31 (1) ◽  
pp. 101-116
Author(s):  
Fatih Hanci
Keyword(s):  
Genetic Variability ◽  
Pisum Sativum ◽  
Ssr Markers ◽  
Simple Sequence Repeat ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Morphological Markers ◽  
Pisum Sativum L ◽  
Euclidean Distances ◽  
Simple Sequence

AbstractThe aim of this study was to identify the molecular and morphological characteristics of Turkish pea accessions (Pisum sativum L.). The genetic diversity among 130 Turkish landraces and 2 commercial varieties in a total of 132 pea accessions was assessed with 14 simple sequence repeat (SSR) markers. Forty-eight (48) polymorphic alleles were identified using 14 SSR markers. The pairwise Dice coefficients of similarity between accessions ranged from 0.091 to 0.960. The polymorphism information content (PIC) value ranged from 0.585 to 0.861. Overall, 50 morphological traits were evaluated. Cluster analysis was carried out on a matrix of Euclidean distances. The accessions were divided into three main groups. Principal component analysis (PCA) was used to identify the weight of each morphological characteristic. According to the results, the highest eigenvalue was observed in PC-I (13.88) followed by PC-II (11.42), and PC-III (7.32). The first fifteen PCs with eigenvalues > 1 explained 74.08% of the variability. The results showed that the molecular markers were useful and polymorphic, sufficient to allocate all the evaluated accessions. This research has provided significant insights into the genetic variability of Turkish pea accessions.

scholarly journals Reproductive biology of Pêga Jackasses: characteristics of sperm-rich fraction collected using the split-ejaculate method

2016 ◽  
Vol 68 (4) ◽  
pp. 832-838
Author(s):  
L.E. Carvalho ◽  
J.M. Silva Filho ◽  
M.S. Palhares ◽  
A.L.R. Sales ◽  
A.T. Gonczarowska ◽  
...  
Keyword(s):  
Sperm Concentration ◽  
Morphological Characteristics ◽  
High Quality ◽  
Open Model ◽  
Mean Values ◽  
Normal Sperm ◽  
Semen Volume ◽  
The Mean ◽  
Semen Processing ◽  
Artificial Vagina

ABSTRACT The aim of this study was to evaluate the physical and morphological characteristics of the sperm-rich fraction of jackass semen. To this end, 130 ejaculates from five Pêga jackasses were collected using an open model artificial vagina. The sperm-rich fraction was collected using the split-ejaculate method and assessed for the number of mounts/ejaculate, for physical and morphological characteristics of the semen and number of doses produced/ejaculate. It was observed that all characteristics evaluated differed among the five jackasses, except for the head defect rates. The mean values obtained for the jackass sperm-rich fraction collected were: number of mounts/ejaculate - 1.27; semen volume - 20.21mL; motility - 84.53%; vigor - 4.46; motility after dilution - 80.10%; sperm concentration/mL - 894.38 x 106; total sperm/ejaculate - 16.14 x 109; number of insemination doses/ejaculate (400x106 motile sptz) - 33.39; number of insemination doses/ejaculate (800 x 106 motile sptz) - 16.69; and percentage of normal sperm - 90.46%. Thus, in the present experiment the split-ejaculate method using an open artificial vagina worked well with the jackasses, and the sperm-rich fraction of the ejaculate of Pêga jackasses had high quality and sperm concentration, allowing its use for semen processing without reducing the number of insemination doses produced per ejaculate.

Comparative Analysis on the Precision Fit of Dental Prosthesis between the Variously Fabricated Copings of Nickel-Chromium Alloy, Titanium and Zirconia Ceramic

2007 ◽  
Vol 330-332 ◽  
pp. 1373-1376
Author(s):  
S.W. Lee ◽  
J.W. Kim ◽  
S.H. Hwang ◽  
Dong Hoo Han ◽  
H.S. Moon
Keyword(s):  
Comparative Analysis ◽  
Zirconia Ceramic ◽  
Chromium Alloy ◽  
Marginal Fit ◽  
Mean Values ◽  
Nickel Chromium ◽  
Dental Prostheses ◽  
The Mean ◽  
Alloy Titanium ◽  
Alloy Cast

Precision fit of dental prostheses were compared between the four experimental groups of cast Ni-Cr alloy, cast titanium, milled titanium and milled zirconium by measuring and comparing the mean values of the marginal, axial, occlusal and overall coping-die gaps. The overall, axial and occlusal fit was most precise with the cast Ni-Cr alloy prosthesis. The biologically critical marginal fit was the most precise with the milled zirconium, thus suggesting that the copy-milled zirconia ceramic could serve as an alternative to the cast-metal prosthesis. The statistical variables, such as the groups and the regions, were in association with and had an interaction effect on the adaptability of the prostheses. The marginal gaps correlated with the axial gaps in the cast Ni-Cr alloy and milled titanium groups

scholarly journals Genetic variability of Nigerian sheep breeds at the insulin-like growth factor-1 (IGF-1) gene locus

2020 ◽  
Vol 45 (1) ◽  
pp. 51-60
Author(s):  
A. Mohammed ◽  
A. O. Raji ◽  
J. U. Igwebuike
Keyword(s):  
Genetic Variability ◽  
Random Mating ◽  
General Pattern ◽  
Fixation Index ◽  
Mean Values ◽  
Sheep Breeds ◽  
Expected Heterozygosity ◽  
The Mean ◽  
High Level ◽  
The University

The genetic variability of some Nigerian breeds of sheep at the IGF 1 locus was investigate blood samples from 150 sheep (50 each of Yankasa, Balami and Uda sheep) were collected from the Maiduguri abbatoir and analysed at the Biotechnology centre of the University of Maiduguri. A relatively high level of genetic variability was detected in Nigerian sheep; the mean observed heterozygosity (Ho) and expected heterozygosity (He) values were 0.433 and 0.476, respectively. Comparison of expected heterozygosity of alleles between the populations showed that yankasa was the most heterozygous of the sheep populations though the unbiased expected heterozygosity (0.503) for the Yankasa was the same as that of the Balami. All populations were 100% polymorphic at the IGF 1 locus with fixation index ranging from -0.169 to 0.378 and a mean of 0.093, which suggests a general pattern of random mating. Similarly, low mean values for Fis (0.093), F (0.089), Fis (0.089), Fit (0.130) and Fst (0.045) supports the assertion that inbreeding was limited due to outcrossing with relatively high level of gene-flow (Nm = 5.292). The analysis of molecular variance (AMOVA) revealed that only 1% of the total variations observed in the sampled populations is accounted for by the population differences while individual differences accounted for 85%. The UPGMA phylogenetic tree revealed that the Uda and Yankasa populations are closer to each than each is to Balami. Thus, it can be concluded that sufficient genetic variation exist in the studied Nigerian sheep breeds and these populations are unlikely to decline due to inbreeding.  

scholarly journals COMPARATIVE ANALYSIS OF SOME HEAVY METALS LEVELS IN LEAVES, PEELS AND TUBERS OF CASSAVA PLANTED ALONG EAST-WEST ROAD RIVERS STATE

2021 ◽  
Vol 9 (8) ◽  
pp. 1-13
Author(s):  
Isaac Eguarkhide Ogah ◽  
Ekpete A. Ozioma
Keyword(s):  
Heavy Metals ◽  
Comparative Analysis ◽  
Mean Values ◽  
Cassava Leaves ◽  
Safe Limit ◽  
The Mean ◽  
Rivers State ◽  
The Impact ◽  
Mean Concentration ◽  
East West

Introduction: Pollution of the environment by heavy metals has caused serious environmental problems, which threatens the existence of various ecological system, agriculture and human health. This study assessed the comparative analysis of some heavy metals levels in leaves, peels and tubers of cassava planted along East-West Road Rivers State. Materials/Methods: Cassava leaves and tubers samples were collected from farmlands along East-West road (SX, SY and SZ communities, in Emohua, Tai, and Ahoada West LGA respectively), Rivers state, Nigeria. The samples were monitored for heavy metals levels to assess the impact of automobiles on cassava peels, leaves and tubers using Solar Thermo Elementary Atomic Absorption Spectrometer, ModelSG 71906. Metals studied were Lead (Pb), Nickel (Ni), Chromium (Cr), Cadmium (Cd), and Arsenic (As). Results: The mean concentration of Ni present in leaf was 2.81±0.104 mg/kg, tubers recorded 2.23±0.073 mg/kg and peels 3.20±0.06 mg/kg. The highest concentration (4.064±0.035 mg/kg) of Ni was observed in peels while the least concentration (1.80±1.023 mg/kg) was recorded in the tubers. The mean values of Pb in leaves, tubers and peels were 2.22±1.023 mg/kg, 1.80±1.023 mg/kg and 2.64±0.32, highest concentration was recorded in tubers. Arsenic values were 0.16±0.020 mg/kg > 0.51±0.021 mg/kg > 0.38±0.203 mg/kg in peels, tubers and leaves respectively. The values of As were above WHO safe limit of 0.1mg/kg. Also, the mean values of cadmium in leaves, tubers and peels were 0.054±0.570 mg/kg, 0.046±0.057 mg/kg and 0.16±0.609 mg/kg respectively. The highest concentration (0.138±0.109 mg/kg) was in the tubers. Finally, chromium was found to be present in all the cassava samples (leaves, peels and tubers). The mean concentration of chromium (Cr) was 3.58±0.023 mg/kg, 2.76±0.005 mg/kg and 3.83±0.203 mg/kg in leaves, tubers and peels respectively. Conclusion: From the findings, heavy metals were found in the samples and thus, crops should be cultivated far away from major roads.

scholarly journals Does the Platelet Index Have a Guiding Role in the Association of Cancer and Pulmonary Thromboembolism?

2020 ◽  
pp. 6-14
Author(s):  
Ramazan Öcal ◽  
Nesrin Öcal
Keyword(s):  
Cancer Patients ◽  
Troponin I ◽  
Pulmonary Thromboembolism ◽  
Morphological Characteristics ◽  
Distribution Width ◽  
Mean Values ◽  
Platelet Counts ◽  
Patients With Cancer ◽  
The Mean ◽  
D Dimer

Introduction: The diagnostic value of the D-dimer test varies with variable platelet numbers and functions in patients suffering from cancer and concomitant pulmonary thromboembolism (PTE). This requires easy and reliable evaluation tests. In this study, we aimed to investigate the hypothesis that platelet functions may be more guiding in the prediction and diagnosis of PTE rather than the number of platelets in cancer pa- tients. Methods: The clinical, laboratory and radiological findings of all patients diagnosed with PTE were retrieved, retrospectively. Comparisons were performed between “can- cer-free” and “cancer” patients. The patients were also evaluated according to their active and remission status. Results: The data of 232 patients with PTE were reviewed. 172 patients were cancer- free and 60 were diagnosed with cancer. The mean values of D-dimer, mean platelet volume (MPV) and platelet distribution width (PDW) were found to be significantly higher in patients with cancer (P=0.015, P=0.026, and P=0.023; respectively). On the other hand, mean platelet counts were significantly higher in patients without cancer (P=0.05). It was also observed that the mean values of D-dimer, Troponin-I, MPV, and PDW were found to be significantly higher in patients with active cancer (P=0.05, P=0.044, P=0.05, and P=0.042; respectively). However, the mean platelet counts were significantly higher in patients with cancer who were in remission (P=0.05). Conclusions: The morphological characteristics of the platelets are more determinant than the number of platelets in cancer patients with PTE. Platelet indexes such as MPV and PDW may be useful in the prediction, diagnosis, and follow-up of PTE in patients with cancer.

scholarly journals Anthropogenetic variability in the groups of homo- and heterosexually oriented individuals

Genetika ◽  
2015 ◽  
Vol 47 (2) ◽  
pp. 765-776
Author(s):  
Suzana Cvjeticanin
Keyword(s):  
Genetic Variability ◽  
Population Genetic ◽  
Control Group ◽  
Population Genetic Study ◽  
Test Results ◽  
Mean Values ◽  
Significant Difference ◽  
The Mean ◽  
Distribution Type

This population-genetic study compares morphophysiological and genetic variability in a group of homosexually oriented individuals from Serbia (N=96) with control group of heterosexual individuals (N=96) using a test of determination of homozygously recessive characteristics in humans (HRC-test). Results of our study revealed a statistically significant difference in the mean values of genetic homozygosity (control group 5.0+0.2 ; homosexuals 3.4 +0.1 HRCs, out of 20 observed characteristics) the differences in the distribution type, as well as in the variances of presence of specific combinations of such traits. These results suggest a complex polygenic difference between two observed systems. There is no difference in the degree of genetic homozygosity between the genders in each tested group of individuals. However, both homosexually oriented females and males have significantly lower mean values of HRCs compared to female and male heterosexuals.

Genetic variability, mean performance and analysis of variance in Indian mustard (Brassica juncea L. Czern and Coss)

2019 ◽  
Vol 4 (01) ◽  
pp. 71-75
Author(s):  
Amit Tomar ◽  
Asheesh Kumar Tiwari ◽  
Sanjay Kumar Singh ◽  
Mahak Singh
Keyword(s):  
Genetic Variability ◽  
Brassica Juncea ◽  
Analysis Of Variance ◽  
Indian Mustard ◽  
Base Material ◽  
Sum Of Squares ◽  
Appreciable Amount ◽  
Mean Values ◽  
The Mean

The results were indicated that analysis of variance for twenty three parents and their sixty F1s were computed for all the twelve characters and mean sum of squares. Highly significant differences were observed among the treatments for all the twelve characters under the study. This indicated the presence of an appreciable amount of variability in the base material as well as in the material generated. The mean values of all the twelve characters in parents and F1 progenies and variability are varied from character to character. The appreciable variance among the parents and F1s was found for all the twelve characters. However, the magnitude varied from character to character.

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