heliotropism

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he·li·o·tax·is

(hē'lē-ō-tak'sis),
A form of phototaxis, and perhaps of thermotaxis, in which there is a tendency to growth or movement toward (positive heliotaxis) or away from (negative heliotaxis) the sun or the sunlight.
Synonym(s): heliotropism
[helio- + G. taxis, orderly arrangement]

heliotropism

(hē′lē-ŏt′rə-pĭz′əm)
n.
Growth or orientation of a sessile organism, especially a plant, toward or away from the light of the sun.

he′li·o·tro′pic (-ə-trō′pĭk) adj.

heliotropism

(hē″lē-ŏt′rō-pĭzm) [″ + trepein, to turn, + -ismos, condition]
The tendency of living organisms to turn or grow toward the sun.

heliotropism

a type of PHOTOTROPISM in which the flowers of a plant turn towards the sun during the day.
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References in periodicals archive ?
Byatt and the Heliotropic Imagination, 138; and Flint, "Plotting the Victorians," 299.
Nevertheless, ethnographic research in Mexico has revealed many inconsistencies in the humoral theory, which Chevalier and Sanchez Bain seek to explain through "cycles of heliotropic equilibrium" (22).
Appreciative inquiry (AI) is based on the heliotropic principle, which has been variously described as art and science, holistic theory and practice, and practical philosophy and change process.
A related proposition asserts that the more an organization experiments with conscious evolution of positive imagery, the better it will become as its heliotropic and affirmative competencies strengthen (Cooperrider, 2000b).
The heliotropic flowers are showy, bright yellow, and visited by a diverse insect fauna (Stanton and Galen 1989).
The unnuanced specificity of tying himself to Alexander Hamilton in order to refute Jefferson's infatuation with the French Revolution was more than compensated by his uncritical acceptance of the grand heliotropic myth of history's inexorable westward journey.
The sunflower seeds abundantly, but its heliotropic nature--and not its fecundity--dominates its orthodox emblematic meaning.
But the angel of the house stalks her like a shadow self: Not simply her heliotropic behavior toward power but her instinct to please that power account for her ideological bent.
But the most important assumption was that stromatolite growth was heliotropic. And on this point the researchers were on shaky ground, because no modern examples of heliotropism in stromatolites had ever been reported.
(61) As those overseers who receive this heliotropic text, we, too, might ask about our commitment to "moralize his wanton sight" (104), especially if we know that not all parts can be reconciled in the whole, and that the remainder falls as sacrifice to the coming day, as "An expired date cancelled ere well begun" (26).
Although Campbell says that "Byatt's heliotropic imagination has required a genderless sun" (16), she actually goes on to show in her chapter on Possession how Christabel LaMotte's mythological narratives Melusine and The Threshold make the creative, life-giving sun female.
These evidences point out that simple approximations (i.e., estimation from LAI) can give erroneous results especially for those crops (like sunflower) in which the big leaves, the heliotropic movements, and plant spatial distribution strongly affect the dynamics of the light environment.