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Descriptor in English: Hypocotyl
Descriptor in Spanish: Hipocótilo
Descriptor in Portuguese: Hipocótilo
Descriptor in French: Hypocotyle
Entry term(s): Hypocotyls
Tree number(s): A18.024.875.750
A18.024.937.249
A18.550.500
Scope note: The region of the stem beneath the stalks of the seed leaves (cotyledons) and directly above the young root of the embryo plant. It grows rapidly in seedlings showing epigeal germination and lifts the cotyledons above the soil surface. In this region (the transition zone) the arrangement of vascular bundles in the root changes to that of the stem. (From Concise Dictionary of Biology, 1990)
Annotation: coordinate with specific plant
Allowable Qualifiers: AE adverse effects
AH anatomy & histology
CH chemistry
CL classification
CY cytology
DE drug effects
EM embryology
EN enzymology
GD growth & development
GE genetics
IM immunology
ME metabolism
MI microbiology
PH physiology
PO poisoning
PS parasitology
RE radiation effects
TO toxicity
UL ultrastructure
VI virology
History Note: 95
DeCS UI: 32183
Descriptor UI: D018546
Date Established: 1995/01/01
Date of Entry: 1994/06/07
Revision Date: 2009/07/06
Hypocotyl - Preferred
Concept UI M0027808
Scope note The region of the stem beneath the stalks of the seed leaves (cotyledons) and directly above the young root of the embryo plant. It grows rapidly in seedlings showing epigeal germination and lifts the cotyledons above the soil surface. In this region (the transition zone) the arrangement of vascular bundles in the root changes to that of the stem. (From Concise Dictionary of Biology, 1990)
Preferred term Hypocotyl
Entry term(s) Hypocotyls



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