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Fluctuating Asymmetry of Plant Leaves: Batch Processing

Fluctuating Asymmetry of Plant Leaves: Batch Processing

Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

1. Introduction. Most plant leaves are inconsistent objects having no homologous landmarks, no consistent topology, no quantitative consistency, and few matching points [].Consequently, they pose numerous difficulties for biologists studying the fluctuating asymmetry (i.e., random deviations from perfect symmetry) of plants.The usual approach is to measure asymmetry of leaf width or vein ...

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

Unlike landmark methods for estimating object asymmetry, continuous symmetry measures (CSM) can be used to measure the symmetry distance (ds) of inconsistent objects, such as plant leaves. Inconsistent objects have no homologous landmarks, no consistent topology, no quantitative consistency, and sometimes no matching points. When CSM is used in conjugation with LAMINA Leaf

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

2015-3-13  Fluctuating Asymmetry of Plant Leaves: Batch Processing with LAMINA and Continuous Symmetry Measures John H. Graham 1,*, Mattie J. Whitesell 1, Mark Fleming II 2, Hagit Hel-Or 3, Eviatar Nevo 4and Shmuel Raz 5

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

Batch processing of 5 Rubus cuneifolius leaves in LAMINA. The vertical red line (leaf axis), most clearly visible in leaf #1, is drawn by the analyst.

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

Figure 2. Batch processing of 5 Rubus cuneifolius leaves in LAMINA. The vertical red line (leaf axis), most clearly visible in leaf #1, is drawn by the analyst. It connects the apex to the point where the petiole joins the lamina. The vertical and horizontal green lines, as well as the horizontal red line, are automatically drawn by LAMINA to be either parallel or perpendicular to the red line.

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Article Fluctuating Asymmetry of Plant Leaves: Batch ...

BibTeX @MISC{Graham_articlefluctuating, author = {John H. Graham and Mattie J. Whitesell and Mark Fleming Ii and Hagit Hel-or and Eviatar Nevo}, title = {Article Fluctuating Asymmetry of Plant Leaves: Batch Processing with LAMINA and Continuous Symmetry Measures}, year = {}}

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

Fluctuating Asymmetry of Plant Leaves: Batch Processing with LAMINA and Continuous Symmetry Measures By John Graham, Mattie Whitesell, Mark II, Hagit Hel-Or, Eviatar Nevo and Shmuel Raz Cite

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Assessing Fluctuating Asymmetry of Cucumis sativus Leaves ...

2017-10-18  Fluctuating asymmetry in plant leaves is a widely used measure in geometric morphometrics. For example, starting from a Procrustes superimposition of a prototype leaf, measurements can be fitted before performing statistical analyses of symmetry.

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Fluctuating asymmetry, leaf thickness and herbivory in ...

2017-10-16  Gradient of stressful conditions affect plant physiological and morphological traits. Previous studies have shown that plants located at higher altitudes might exhibit higher levels of both fluctuating asymmetry and leaf thickness. Although it is expected that higher fluctuating asymmetry levels should be accompanied by higher leaf consumption by herbivores, lower herbivory could be expected ...

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Fluctuating Asymmetry - an overview ScienceDirect Topics

Fluctuating asymmetry can be used to compare populations or individuals within populations. Within populations, asymmetry can vary considerably across individual organisms. Individual fluctuating asymmetry refers to an individual's deviation in either direction from perfect bilateral symmetry. This variation, in part, is due to genetic differences.

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Fluctuating Asymmetry of Plant Leaves: Batch Processing ...

Fluctuating Asymmetry of Plant Leaves: Batch Processing with LAMINA and Continuous Symmetry Measures By John H. Graham, Mattie J. Whitesell, Mark Fleming II,

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(PDF) Fluctuating Asymmetry of Plant Leaves Using ...

Fluctuating asymmetry of a population of leaves is then the mean symmetry distance. We used CSM estimates of fluctuating asymmetry to compare leaves of invasive exotic species to those of closely ...

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Leaf herbivory and fluctuating asymmetry as indicators of ...

2019-7-3  Fluctuating asymmetry (FA), a widely used measure of developmental instability in plants and animals, which describes random differences in size and/or shape between the two sides of a bilateral character. We used FA as a tool to detect stress in three mangrove species (Avicennia germinans, Laguncularia racemosa, Rhizophora mangle), growing in both disturbed and conserved habitats in the ...

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The Genetic Architecture of Fluctuating Asymmetry of ...

Fluctuating asymmetry (FA), typically measured by variation in the differences between right and left sides of bilateral traits, is commonly used to assess developmental instability (DI) in populations. A previous quantitative trait locus (QTL) investigation using an F2 intercross mouse population found little evidence of individual loci affecting FA in mandible size, but an abundance of ...

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Fluctuating Asymmetry as a Bioindicator of Environmental ...

Fluctuating asymmetry (FA) is a widely used tool to detect developmental instability and plants under stressful conditions are expected to exhibit increased values of asymmetry, as well as higher levels of herbivory. This study evaluated whether dust from roads can cause major deviations in the axis

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Fluctuating asymmetry, leaf thickness and herbivory in ...

2017-10-16  Gradient of stressful conditions affect plant physiological and morphological traits. Previous studies have shown that plants located at higher altitudes might exhibit higher levels of both fluctuating asymmetry and leaf thickness. Although it is expected that higher fluctuating asymmetry levels should be accompanied by higher leaf consumption by herbivores, lower herbivory could be expected ...

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A modified version of fluctuating asymmetry, potential for ...

My research interest was to create a new, simple and tractable mathematical framework for analyzing fluctuating asymmetry (FA) in Aesculus hippocastanum L. palmately compound leaves (each compound leaf with 7 obviate, serrate leaflets). FA, being random differences in the development of both sides o

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(PDF) Leaf Fluctuating Asymmetry Increases with ...

Fluctuating leaf asymmetry is commonly used as an indicator of genetic and environmental stress (Wilsey et al., 1998, Beasley et al. 2013. Leaf size and symmetry decreased with increasing climate ...

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Contrasting patterns of morphology, fluctuating asymmetry ...

2020-4-25  For each individual, three branches were randomly chosen of each tree canopy strata (i.e., high, middle and low) (Cuevas-Reyes et al. 2011b), and then we selected 50 leaves in total: 25 undamaged leaves to determine the patterns of leaf morphology and fluctuating asymmetry using geometric morphometric techniques and 25 randomly selected leaves ...

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Fluctuating Asymmetry - an overview ScienceDirect Topics

Fluctuating asymmetry can be used to compare populations or individuals within populations. Within populations, asymmetry can vary considerably across individual organisms. Individual fluctuating asymmetry refers to an individual's deviation in either direction from perfect bilateral symmetry. This variation, in part, is due to genetic differences.

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(PDF) Fluctuating Asymmetry of Plant Leaves Using ...

Fluctuating asymmetry of a population of leaves is then the mean symmetry distance. We used CSM estimates of fluctuating asymmetry to compare leaves of invasive exotic species to those of closely ...

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Fluctuating asymmetry of leaves in Digitalis thapsi under ...

2006-3-1  We studied fluctuating asymmetry of leaves in three populations of Digitalis thapsi L. that differed dramatically in mean seed production under field conditions and when reared in a common garden. While absolute asymmetry decreased with leaf position, there was no position effect on relative asymmetry after adjustment for leaf width.

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FLUCTUATING ASYMMETRY OF LEAVES IN DIGITALIS

isms such as plants, asymmetry may increase the risk of leaf damage caused by unequal wind drag, the cost of reorienta-tion of leaves toward light (heliotropism) may be increased by leaf asymmetry, and herbivores may use asymmetry as an indication of poor condition of a particular leaf or plant indi-vidual.

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John GRAHAM Professor Emeritus Ph.D. Berry College ...

Fluctuating Asymmetry of Plant Leaves: Batch Processing with LAMINA and Continuous Symmetry Measures. ... as assessed by leaf fluctuating asymmetry and stem

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Leaf fluctuating asymmetry, soil disturbance and plant ...

2005-5-1  Leaf fluctuating asymmetry, soil disturbance and plant stress: a multiple year comparison using two herbs, Ipomoea pandurata and Cnidoscolus stimulosus Author links open overlay panel D. Carl Freeman a Michelle L. Brown a Jeffrey J. Duda b John H. Graraham c John M. Emlen b Anthony J. Krzysik d Harold Balbach e David A. Kovacic f John C. Zak g

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Leaf Fluctuating Asymmetry and Herbivory of Tibouchina ...

Leaf Fluctuating Asymmetry and Herbivory of Tibouchina heteromalla in Restored and Natural Environments. Fernandes GW, De Oliveira SC, Campos IR, Barbosa M, Soares LA, Cuevas-Reyes P. Fluctuating asymmetry (FA) is a parameter to measure developmental stability in plants, which can be altered by disturbances, pollution, and biotic factors such ...

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(PDF) Plant studies on fluctuating asymmetry in Russia ...

PDF A critical analysis of studies addressing fluctuating asymmetry (FA) of plant leaves, published recently in Russia, demonstrated that most of... Find, read and cite all the research you ...

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Application of fluctuating asymmetry indexes of silver ...

2015-4-29  The prospects for applying the fluctuating asymmetry (FA) of silver birch (Betula pendula Roth) leaves for diagnosis of plant community conditions in technogenically polluted environments are considered with an example of the effect of heavy metals and chronic ionizing radiation. An increase in the minimum sample size to 150–180 leaves and measurements of morphometric traits with an

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Leaf fluctuating asymmetry of Holm oak in response to ...

2005-7-18  Leaf fluctuating asymmetry of Holm oak in response to drought under contrasting climatic conditions Jose´ A. Ho´dar Departamento de Biologı´a Animal y Ecologı´a, Facultad de Ciencias, Universidad de Granada, E-18071 Granada, Spain (Received 18

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TRANSLATIONAL AND FLUCTUATING ASYMMETRY AS

Fluctuating asymmetry. The asymmetry of flowers was examined by measuring the width on each side of the midaxis at the midpoint of the vexillum at the level of the maximum width, and by measuring the largest width of each alae (fig. 1). Floral asymmetry was measured only in plants collected in 1997. We selected 15 plants per transect and two ...

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