scholarly journals VARIABILITY OF SOME BROOMRAPE POPULATIONS FROM CHINA. MORPHOMETRY AND RACE IDENTIFICATION (I)

Akademos ◽  
2021 ◽  
Vol 60 (1) ◽  
pp. 42-50
Author(s):  
Maria Duca ◽  
◽  
Ana Mutu ◽  
Ina Bivol ◽  
Steliana Clapco ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Width Ratio ◽  
Seed Length ◽  
Interpopulation Variability ◽  
Pearson Coefficient ◽  
Variability Level ◽  
Length Width ◽  
Positive Correlations ◽  
Biometric Indices

The article is a synthesis of some studies on the identification of broomrape races originating from China and the determination of the level of intra- and interpopulation variability based on the morphometric parameters of the seeds. The racial status of the analyzed populations was established, also two races of broomrape were identified: race G (Ch1 from Inner Mongolia and Ch3 from HeBei) and race H (Ch2 from Inner Mongolia) using internationally recognized differential Or homosygous lines set. Comparative analyses on the morphometric characteristics of broomrape revealed significant differences in seed Length (Ch1 and Ch3 populations, race G) and Length/width ratio (Ch3 and Ch4), which is an indication of the moderate level of interpopulation variability. In the case of assess of the intrapopulation variability level, the relatively homogeneous (Ch2, Ch3 and Ch4) and relatively heterogeneous (Ch1) populations were identified. According to the coefficient of variation, the population Ch2 identified as H broomrape race has distinguished as the most homogeneous for the investigated biometric indices of the seeds. The moderate positive correlations (between Length and width seed, between seed length and L/w ratio), the strong positive correlations (between Length and L/w ratio) and also the strong negative correlations (between width and L/w ratio) were established. The results obtained through Pearson coefficient revealed the discrimination of populations by region.

scholarly journals Estimating the Effect of Fractal Dimension on Representative Elementary Volume of Randomly Distributed Rock Fracture Networks

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Jing Zhang ◽  
Liyuan Yu ◽  
Hongwen Jing ◽  
Richeng Liu
Keyword(s):  
Fractal Dimension ◽  
Functional Relationship ◽  
Rock Fracture ◽  
Representative Elementary Volume ◽  
Width Ratio ◽  
Elementary Volume ◽  
Equivalent Permeability ◽  
Length Width ◽  
Rock Fracture Networks

The effect of fractal dimension (Df) on the determination of representative elementary volume (REV) was investigated through numerical experimentations, in which a new method was adopted to extract submodels that have different length-width ratios from original discrete facture networks (DFNs). Fluid flow in 1610 DFNs with different geometric characteristics of fractures and length-width ratios was simulated, and the equivalent permeability was calculated. The results show that the average equivalent permeability (KREV) at the REV size for DFNs increases with the increase in Df. The KREV shows a downward trend with increasing length-width ratio of the submodel. A strong exponent functional relationship is found between the REV size and Df. The REV size decreases with increasing Df. With the increment of the length-width ratio of submodels, the REV size shows a decreasing trend. The effects of length-width ratio and Df on the REV size can be negligible when Df≥1.5, but are significant when Df<1.5.

scholarly journals Evaluation of Traits Associated With Seed Characteristics in Arkansas Restorer Lines

2021 ◽  
Author(s):  
Ozgur Azapoglu ◽  
Vibha Srivast ◽  
Xueyan Sha ◽  
Ehsan Shakiba
Keyword(s):  
Hybrid Rice ◽  
Width Ratio ◽  
Rice Grain ◽  
University Of Arkansas ◽  
Qtl Detection ◽  
Seed Shape ◽  
Seed Length ◽  
Length Width ◽  
Seed Width ◽  
Seed Characteristics

Abstract Rice Grain dimension and weight are two critical factors for marketing and increasing yield capacity. Seed shape is measured by its length, width, thickness, and ratio of length-width. In this study, an experiment was conducted in a controlled condition from fall 2017 to 2020 to identify QTL and candidate genes associated with seed dimension and weight using a bi-parental population resulting from two University of Arkansas developed genotypes: a restorer line 367R and an advanced breeding line RU1501139, in Stuttgart, Arkansas. Five seed dimension traits, including seed length, seed width, seed thickness, seed length-width ratio, and 100-seeds weight, were obtained for QTL detection. The study detected a total of 17 QTL. Four QTL associated with seed length were identified, in which two were positioned on chr. 3, one on chr. 7, and one on chr. 11. Two QTL related to seed length-width ratio were detected on chr. 3 and 7. Whereas a total of three QTL were identified for seed thickness, one each on chr. 5, 6, and 8. Eight QTL associated with seed weight were found, of which four QTL were detected on chr. 12, two each on chr. 1 and 10, and one on chr. 3. Of 17 QTL, four QTL originated from RU1501139, while the origin of the other 13 QTL was 367R. Since multiple genes could control the yield and seed physical characteristics, the detected QTL can play a role in introducing superior parental lines for developing conventional and hybrid rice production.

scholarly journals Morphometric Study of Several Species of the Genus Jatropha Linn. (Euphorbiaceae)

2016 ◽  
Vol 8 (2) ◽  
pp. 211-215
Author(s):  
Opeyemi Saheed KOLAWOLE ◽  
Abdullahi Alanamu ABDULRAHAMAN ◽  
Mahboob Adekilekun JIMOH ◽  
Felix Ayotunde OLADELE
Keyword(s):  
Principal Component ◽  
Leaf Length ◽  
Leaf Width ◽  
Morphometric Study ◽  
Width Ratio ◽  
Fruit Length ◽  
Jatropha Gossypifolia ◽  
Length Width ◽  
Positive Correlations ◽  
And Cluster Analysis

Morphological parameters of several Jatropha species, namely Jatropha curcas L., Jatropha gossypifolia L., Jatropha podagrica Hook., Jatropha integerrima Jacq. and Jatropha multifida L. were subjected to quantitative analysis within the present study. Twelve traits of the leaves, fruits and seeds were analysed: leaf length, leaf width, leaf length/width ratio, petiole length, petiole width, fruit length, fruit width, fruit length/width ratio, seed length, seed width, fruit stalk length and fruit stalk width were subjected to Principal Component Analysis (PCA) and cluster analysis. Highly significant positive correlations have been noted, while negative correlation was observed between leaf width and leaf length/width ratio, fruit width and leaf length/width ratio. Traits such as leaf length, leaf width and leaf length/width ratio contributed significantly along with other traits to discriminate the studied Jatropha species.  J. podagrica and J. integerrima were found to have more similarities, with a stronger coefficient of agglomeration (69.072) than J. curcas and J. podagrica with 315.028 coefficient of agglomeration respectively. The generated dendrogram showed the relationship between the studied Jatropha species, whereas great affinity was noted between J. podagrica and J. multifida as compared with J. gossypifolia and J. integerrima which are distantly related. The closeness observed between J. podagrica and J. multifida is in line with their current sub-generic grouping.

Seed Micromorphology of Eleven Species of Pleione (Orchidaceae)

Phytotaxa ◽  
2021 ◽  
Vol 528 (4) ◽  
pp. 229-239
Author(s):  
ZHONGXUAN WANG ◽  
HAO ZHANG ◽  
SI QIN ◽  
LE YOU ◽  
JUNWEN ZHAI ◽  
...  
Keyword(s):  
Cluster Analysis ◽  
Seed Coat ◽  
Width Ratio ◽  
Seed Length ◽  
Group Iii ◽  
Group I ◽  
Quantitative Characteristics ◽  
Length Width ◽  
Seed Micromorphology ◽  
Seed Width

The micromorphological characteristics of the seeds of 11 species of Pleione have been studied, both qualitatively and quantitatively, to establish whether they are useful for systematic studies of the genus. The quantitative characteristics include seed length (0.237–0.626 μm), seed width (0.053–0.133 μm), seed length/width ratio (2.631–7.279), seed ridge thickness (1.4 E-3–4 E-3μm) and seed volume (1.88 E-4–3.06 E-3 μm3). The cluster analysis result agrees well with the results of previous systematic studies. The cluster analysis shows that: P. coronaria, P. forrestii and P. yunnanensis form a group, while the remaining eight species form a second group, with three subgroups, namely: P. limprichtii, P. pleionoides, P. formosana as group I; P. hookeriana and P. bulbocodioides as group II; and P. praecox, P. scopulorum and P. maculata for group III. All the Pleione species of Sect. Pleione and Sect. Humiles show the fusion of adjacent seed coat cells into a network. The shape of the seeds of P. praecox and P. maculata are very similar--being oval, and the mesh walls of their adjacent seed coat cells are not fused. Within these sections no clear pattern can be seen between the species, but the addition of further species might clarify the differences between Sect. Pleione and Sect. Humiles.

scholarly journals Determining the length-width ratio of the quarry exploited under sea level to recover maximally extraction reserves

2019 ◽  
Vol 61 (1) ◽  
pp. 110-115
Author(s):  
Nguyen Tuan Thanh ◽  
Keyword(s):  
Sea Level ◽  
Surface Area ◽  
Significant Influence ◽  
Width Ratio ◽  
Size And Shape ◽  
Length Width ◽  
Mining Design

The boundary of the quarry exploited under sea level has a significant influence on mining design, especially the determination of extraction reserves. For a quarry project, with the same given exploiting depth, the size and shape on the surface of the quarry will yield different mining alternatives and extraction reserves. This paper proposed an approach for determining the length-width ratio of the quarry (with the surface area is rectangular) to achieve maximum reserves corresponding to the quarry boundary.

Gender determination of caucasoid hair using image analysis

1993 ◽  
Vol 51 ◽  
pp. 216-217
Author(s):  
T.B. Ball ◽  
W.M. Hess
Keyword(s):  
Image Analysis ◽  
Cross Sections ◽  
Scalp Hair ◽  
The Body ◽  
Equivalent Diameter ◽  
Cross Sectional ◽  
Hair Samples ◽  
Length Width ◽  
Morphological Differences

It has been demonstrated that cross sections of bundles of hair can be effectively studied using image analysis. These studies can help to elucidate morphological differences of hair from one region of the body to another. The purpose of the present investigation was to use image analysis to determine whether morphological differences could be demonstrated between male and female human Caucasian terminal scalp hair.Hair samples were taken from the back of the head from 18 caucasoid males and 13 caucasoid females (Figs. 1-2). Bundles of 50 hairs were processed for cross-sectional examination and then analyzed using Prism Image Analysis software on a Macintosh llci computer. Twenty morphological parameters of size and shape were evaluated for each hair cross-section. The size parameters evaluated were area, convex area, perimeter, convex perimeter, length, breadth, fiber length, width, equivalent diameter, and inscribed radius. The shape parameters considered were formfactor, roundness, convexity, solidity, compactness, aspect ratio, elongation, curl, and fractal dimension.

scholarly journals Quantitative Determination of the Effects of He-Ne Laser Irradiation on Seed Thermodynamics, Germination Attributes and Metabolites of Safflower (Carthamus tinctorius L.) in Relation with the Activities of Germination Enzymes

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1411
Author(s):  
Rashida Perveen ◽  
Xiukang Wang ◽  
Yasir Jamil ◽  
Qasim Ali ◽  
Shafaqat Ali ◽  
...  
Keyword(s):  
Seed Germination ◽  
Energy Levels ◽  
Soluble Sugars ◽  
Building Blocks ◽  
Carthamus Tinctorius ◽  
Fast Decline ◽  
Seed Irradiation ◽  
Seed Reserves ◽  
Positive Correlations

The present investigation was undertaken to assess the effects of different doses (100, 300, and 500 mJ) of low power He–Ne laser (632.8 nm) irradiation on seed germination and thermodynamics attributes and activities of potential germinating enzymes in relation with changes in seed metabolites. He–Ne laser seed irradiation increased the amylase (Amy), protease (Pro) and glucosidase (Gluco) activities, with a significant improvement in seed thermodynamics and seed germination attributes. A fast increase was found in free fatty acids (FFA), free amino acids (FAA), chlorophyll (Chl), carotenoids (Car), total soluble sugars (TSS) and reducing sugars (RS) in laser treated seeds in parallel with fast decline in seed oil contents and total soluble proteins (TSP). Significant positive correlations were recorded in laser-induced enhanced seed energy levels, germination, activities of germination enzymes with levels of FAA, FFA, Chl, TSS and RS, but a negative correlation with the levels of TSP and oil. In conclusion, the seed treatment with 100 and 300 mJ He–Ne laser was more effective to improve the seed germination potential associated with an improvement in seed energy levels due to increased activities of germination enzymes due to the speedy breakdown of seed reserves to simple metabolites as building blocks.

scholarly journals An SPRi Biosensor for Determination of the Ovarian Cancer Marker HE4 in Human Plasma

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3567
Author(s):  
Beata Szymanska ◽  
Zenon Lukaszewski ◽  
Beata Zelazowska-Rutkowska ◽  
Kinga Hermanowicz-Szamatowicz ◽  
Ewa Gorodkiewicz
Keyword(s):  
Ovarian Cancer ◽  
Cancer Patients ◽  
Tumor Resection ◽  
Analytical Signal ◽  
Cancer Marker ◽  
Human Epididymis Protein 4 ◽  
Pearson Coefficient ◽  
Rabbit Polyclonal Antibody ◽  
Good Agreement

Human epididymis protein 4 (HE4) is an ovarian cancer marker. Various cut-off values of the marker in blood are recommended, depending on the method used for its determination. An alternative biosensor for HE4 determination in blood plasma has been developed. It consists of rabbit polyclonal antibody against HE4, covalently attached to a gold chip via cysteamine linker. The biosensor is used with the non-fluidic array SPRi technique. The linear range of the analytical signal response was found to be 2–120 pM, and the biosensor can be used for the determination of the HE4 marker in the plasma of both healthy subjects and ovarian cancer patients after suitable dilution with a PBS buffer. Precision (6–10%) and recovery (101.8–103.5%) were found to be acceptable, and the LOD was equal to 2 pM. The biosensor was validated by the parallel determination of a series of plasma samples from ovarian cancer patients using the Elecsys HE4 test and the developed biosensor, with a good agreement of the results (a Pearson coefficient of 0.989). An example of the diagnostic application of the developed biosensor is given—the influence of ovarian tumor resection on the level of HE4 in blood serum.

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