apical dominance


Also found in: Medical, Encyclopedia, Wikipedia.

apical dominance

n.
Inhibition of the growth of lateral buds by the terminal bud of a plant shoot.
References in periodicals archive ?
This advancement includes the stages of dormancy (absence of sprouts or dormant buds), apical dominance (just one sprout), full sprouting (several side sprouts) and senescence (intense branching of the sprouts) (WIERSEMA, 1985; STRUIK, 2007; BISOGNIN et al.
Grapevines are well known to express apical dominance in bud positions most distal from the base of one-year-old wood (see bottom photo on page 30).
Boring in terminal shoots of young big leaf mahogany, Swietenia macrophylla King breaks apical dominance, causing forking of the stems and excessive production of lateral branches (Howard & Giblin-Davis 1997; Schabel et al.
The low percentage of budbreak in both apple cultivars in the method using grafted twigs may be associated to the high apical dominance characteristic of apples trees.
The development of lateral meristems, which originates aerial tillers, is limited by the apical dominance that comes about as a consequence of the presence of auxin in the meristematic zone (TAIZ; ZEIGER, 2004).
Full rate metconazole applied at the start of stem extension from mid-March during active growth will be vital here for the best growth regulation, promoting more branching and more even flowering by reducing apical dominance as well as cutting lodging risk by limiting plant height.
There is a relation between the apical dominance and the concentration of auxins produced in apical bud, which indirectly inhibit the growth of axillary bud.
The importance of Auxin and cytokinin balance has been reported in regulating the apical dominance as well as in morphogenetic events such as shoot formation and multiplication (Li & Bangerth 2003, Werner et al.
It interacts with cytokinin in this function, such that the ratio of auxin to cytokinin determines whether apical dominance exists or is overcome.
In fruit trees, changing the shoot to more horizontal orientation decreases apical dominance and increases cytokinin content (Ito et al.
Canary Island pines (Pinus canariensis), for example, have such strong apical dominance or determination to grow vertically that they can be planted very close to a structure and never lean.