Preferred Label : hypocotyl;
MeSH definition : 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);
MeSH synonym : hypocotyls;
MeSH annotation : coordinate with specific plant;
Origin ID : D018546;
UMLS CUI : C0242766;
Allowable qualifiers
Record concept(s)
Semantic type(s)
- Plant [UMLS semantic type]
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)