fluctuating asymmetry of plant leaves: batch processing
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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

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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 ...

2017-10-7  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 4 and Shmuel Raz 5 1 Department of Biology, Berry College, Mount Berry, GA 30149, USA; E-Mail: [email protected]

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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 ...

Symmetry 2015, 7 256 Keywords: continuous symmetry measure; fluctuating asymmetry; LAMINA software; plant leaves; shape asymmetry 1. Introduction Most plant leaves are inconsistent objects having no homologous landmarks, no consistent topology, no

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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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Student Research and Publications – John H. Graham

Fluctuating asymmetry and developmental noise during leaf expansion in the pumpkin Cucurbita pepo. Association of Southeastern Biologists Bulletin 47: 128. Graham, John H., David Fletcher, James Tigue, and Malcolm McDonald. 2000. Effects of low frequency magnetic fields on growth and developmental stability of Drosophila melanogaster ...

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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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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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Does Fertilizer Influence Shape and Asymmetry in Wheat

2020-8-9  The method of geometric morphometrics was applied. The tasks of the work included the comparing the shape and asymmetry of winter wheat leaf blade under cultivating with different doses of mineral fertilizer. From each individual from 20 plants 4–6 laminas were collected. Four levels of the widely used mineral fertilizer NPK were used.

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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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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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Student Research and Publications – John H. Graham

Fluctuating asymmetry and developmental noise during leaf expansion in the pumpkin Cucurbita pepo. Association of Southeastern Biologists Bulletin 47: 128. Graham, John H., David Fletcher, James Tigue, and Malcolm McDonald. 2000. Effects of low frequency magnetic fields on growth and developmental stability of Drosophila melanogaster ...

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Batch processing of 5 Rubus cuneifolius leaves in LAMINA ...

Download scientific diagram 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 ...

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How reproducible are the measurements of leaf

2015-6-11  Figure 1Measurements of a birch leaf for calculation of fluctuating asymmetry.Measurements of left (WL) and right (WR) halves are usually conducted perpendicular to midrib, in the middle of leaf lamina. (a) to measure the width of the left and right halves of each leaf at the midpoint between

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How reproducible are the measurements of leaf

2021-9-13  Fluctuating asymmetry (FA) represents small, non-directional deviations from perfect symmetry in morphological characters. FA is generally assumed to increase in response to stress; therefore, FA is frequently used in ecological studies as an index

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Does Fertilizer Influence Shape and Asymmetry in Wheat

2020-8-9  The method of geometric morphometrics was applied. The tasks of the work included the comparing the shape and asymmetry of winter wheat leaf blade under cultivating with different doses of mineral fertilizer. From each individual from 20 plants 4–6 laminas were collected. Four levels of the widely used mineral fertilizer NPK were used.

Get Price

Morphological Developmental Stability in Plants: Patterns ...

1999-11-1  First, we review patterns of fluctuating asymmetry in plants and show that levels of asymmetry are considerably greater than in animals. While petal asymmetry tends to decrease with petal size within species, leaf asymmetry tends to increase with leaf size. Intraspecific correlations of petal asymmetry and leaf asymmetry are weakly positive.

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Translational asymmetry as a sensitive indicator of ...

2003-6-20  Measures of DS used in plants include fluctuating asymmetry (FA) and translational asymmetry (TA) (Freeman et al., 2003). The former is measured on bilateral traits (such as opposing leaves or floral parts) and represents random deviations from bilateral symmetry, while the latter is measured as deviations from a theoretical relationship ...

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Differences in leaf nutrients and developmental ...

2016-11-28  The hypersensitive response is an important form of plant-induced defence against galling insects and can imply changes in leaf nutrients, especially nitrogen and carbon, which are important for both gall survivorship and leaf development. We hypothesised that the hypersensitive response also causes leaf stress, which can be measured using leaf fluctuating asymmetry. This method evaluates ...

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MANIFESTATION OF EFFECT OF FLUCTUATING

2018-5-22  shaded plants. At the same time, the asymmetry and leaf area were 5 % and 26.8 % higher respectively in plants in the shade, which is a compensation for low absorption of light and indicates stress [8]. Thus, the FA level can be used to predict changes in the development of plants as a measure of environmental stress.

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INFLUENCE OF LIGHT QUALITY ON FLUCTUATING

2017-6-2  be taken as an indicator of the plant status for assessment of effectiveness and sustainability of the plant growing process under artificial conditions. We conducted several studies to identify the relationship between the level of fluctuating asymmetry of forcing parsley leaves (Petroselinum crispum var. tuberosum) and the light quality of

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Translational and Fluctuating Asymmetry as Tools to

2020-9-4  M. Velickovic, S. Perisic Leaf fluctuating asymmetry of common plantain as an indicator of habitat quality, Plant Biosystems - An International Journal Dealing with all Aspects of Plant Biology 140, no.2 2 (Jul 2006): 138–145.

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Morphological Developmental Stability in Plants: Patterns ...

1999-11-1  First, we review patterns of fluctuating asymmetry in plants and show that levels of asymmetry are considerably greater than in animals. While petal asymmetry tends to decrease with petal size within species, leaf asymmetry tends to increase with leaf size. Intraspecific correlations of petal asymmetry and leaf asymmetry are weakly positive.

Get Price

How reproducible are the measurements of leaf

2015-6-11  Figure 1Measurements of a birch leaf for calculation of fluctuating asymmetry.Measurements of left (WL) and right (WR) halves are usually conducted perpendicular to midrib, in the middle of leaf lamina. (a) to measure the width of the left and right halves of each leaf at the midpoint between

Get Price

Phenotypic plasticity in response to environmental ...

Fluctuating asymmetry (FA) is widely used to quantify developmental insta-bility (DI) in ecological and evolutionary studies. It has long been recog-nized that FA may not exclusively originate from DI for sessile organisms such as plants, because phenotypic plasticity in response to heterogeneities in the environment might also produce FA.

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Translational asymmetry as a sensitive indicator of ...

2003-6-20  Measures of DS used in plants include fluctuating asymmetry (FA) and translational asymmetry (TA) (Freeman et al., 2003). The former is measured on bilateral traits (such as opposing leaves or floral parts) and represents random deviations from bilateral symmetry, while the latter is measured as deviations from a theoretical relationship ...

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Applications in Plant Sciences

2019-9-19  The leaf area is also provided, calculated from the number of white pixels within the bounding box. The fluctuating asymmetry (FA) of each leaf is also calculated, providing a quantitative measure of the left–right asymmetry of each leaf (e.g., Rozefelds and Pace, 2018). The

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Developing a methodology of bioindication of human

2014-9-15  The length and width of leaves of seagrass were measured, then the measurement of fluctuating asymmetry was conducted according to Ambo-Rappe et al., 2007, Ambo-Rappe et al., 2008b, Ambo-Rappe et al., 2011 as follows: (a) twenty leaves from each quadrate were cleaned of attached epiphytes, (2) five points along the leaf were defined at a ...

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