1933
DOI: 10.1007/bf01916401
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Über Wuchsstoff und Geotropismus bei Gräsern

Abstract: Die geotropische Reaktion der Gr/~ser ist dutch die Untersuehungen von SACHS (21), DE VI~IES (24), EL~VINr (9), P~'EF~EI~ (19) U.a. eingehend bekannt geworden, ungekl/~rt ist aber bisher, ob bei dieser Reaktion ein Wuchsstoff eine Rolle spielt. In der Literatur finder sich nur bei F. A. F. C. WENT (25) eine Bemerkung, dab offenbar bei der geotropisehen Reaktion der Grasknoten die Dinge g~nz anders liegen als bei der Avenakoleoptile, und ferner eine Angabe bei UYLDEI~W (23), dab Wuchsstoff (aus Zeakoleoptilen) … Show more

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Cited by 44 publications
(9 citation statements)
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“…For example. the amount of auxin which can be obtained from1 grass no(les (24) and from the meristematic growth rings of sugar cane nodes (26) increases wlhen these plants are placed horizontally. There is no evi(dence, however, that auxin production or release is unilateral; lateral transport may concentrate the newly appeared1 auxin in the lower half.…”
Section: Discussionmentioning
confidence: 99%
“…For example. the amount of auxin which can be obtained from1 grass no(les (24) and from the meristematic growth rings of sugar cane nodes (26) increases wlhen these plants are placed horizontally. There is no evi(dence, however, that auxin production or release is unilateral; lateral transport may concentrate the newly appeared1 auxin in the lower half.…”
Section: Discussionmentioning
confidence: 99%
“…However, it seems improbable that the inhibition was caused by a decreased auxin production, as the same reduction ofgrowth was observed with decapitated coleoptiles in the 0.05 mgjl IAA solution, in which the vertical and horizontal coleoptiles were supplied with the same quantity of auxin. As a matter of fact, in those instances reported in literature where a change of the auxin production was really found, the lateral action of gravity always caused a stimulation in stead of an inhibition of the auxin production (SCHMITZ, 1933;V AN OVERBEEK et al 1944).…”
Section: Resultsmentioning
confidence: 96%
“…This observation supports Lyon's idea (15) that petiole curvature is a result of the asymmetrical distribution of auxin in the petiole. The increase in ethylene production observed may be due to an increase in auxin levels in horizontal plants (2,3,17,20 (16) suggest that polar auxin transport in sunflowers was inhibited by placing them on a clinostat.…”
Section: Discussionmentioning
confidence: 99%