When pollination and fecundation occur, the concentration of auxins in the fruit usually increases, possibly as a result of production by the developing seeds. Conferva vadorum Areschoug,p. There are, however, descriptions of an acropetal progression of xylem differentiation that extends from the mature system below up into the leaf trace and meets the descending basipetal wave of differentiating xylem. When there are no pollinating insects, exogenous auxins are applied to promote fruit set. Apical dominance. Gibberelins play an important role in the transition from the juvenile period to the adult period.
acropetal movement The movement of substances within the plant toward its root and shoot apices. Compare BASIPETAL MOVEMENT.
Source for information. The movement of substances within the plant toward its root and shoot apices.
Compare basipetal movement. acropetal movement. Edited by Michael Allaby. in A Dictionary of Plant Sciences. Second edition.
Published in print January | ISBN:
Examples of use in the English literature, quotes and news about acropetal.
Acropetal movement watches
|The green leaf-like structures are petals.
Sussex, The seeds can be dispersed many kilometres on the wind. In contrast to basipetal The combustion process led to the emission of ethylene and the leaves of trees near these lamps turned yellow and were shed. As in the case of ethylene, this phytohormone induces the expression of resistance genes for a number of stresses.
B : once the sunlight starts to reach the shoot at an angle, the IAA molecules move to the far side and induce elongation of cells on that side.
from top surface to bottom of leaf) as well as acropetal movement in the plant's vascular system (moves from center to growing tips Results to watch out for!.
However, it is known that in addition to upward (acropetal) movement in the xylem a few such compounds show downward (basipetal) movement in the phloem (Bunt, ; Griffin. watch glass. The activity of the juveniles. The movement of these phytohormones is from the apices to the roots (basipetal) and vice versa (acropetal). However, basipetal movement is much more rapid.
Plant growth regulators Plant growth regulators PGR s are molecules that influence the development of plants and are generally active at very low concentrations.
Davey, The strategy of selling quickly on early gains was also adopted to good effect by Hypocotyl explants. There are differences between plant and animal hormones.
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|The first natural cytokinin isolated and identified was named zeatin, since it was isolated from maize Zea mays seeds.
The main effect of auxins is to cause cell elongation, mainly due to the alteration of cell wall plasticity.
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Ethylene is a simple hydrocarbon that is a gas under normal conditions. Esau observed such There are natural regulators, which are produced by the plant itself, and also synthetic regulators; those found naturally in plants are called phytohormones or plant hormones. Examples of use in the English literature, quotes and news about acropetal.