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apical dominance
noun
Botany.
- suppression of the development of lateral buds in a growing plant shoot, caused by hormones produced in the tip of the shoot.
apical dominance
/ ′ĭ-ə,ă′ĭ- /
- Inhibition of the growth of lateral buds by the terminal bud of a plant shoot. In most plants, apical dominance results from the release of auxin by the apical meristem.
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51Թ History and Origins
Origin of apical dominance1
First recorded in 1945–50
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Example Sentences
Examples have not been reviewed.
“Apical dominance” is the tendency for the uppermost shoots on any plant to grow strongest.
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Once this trunk-to-be grew just above the top of the 3-foot-high fence, I cut its top back to the 3-foot height, releasing the remaining buds from the suppressing effect of apical dominance.
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The arms, because of their horizontal orientation, exhibit little apical dominance, so side branches develop freely.
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The plant also has a say in this, and may turn a growing stem upwards in an attempt to gain apical dominance over other stems.
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