hy·po·cot·yl

H0365200 (hī′pə-kŏt′l)n. The part of a plant embryo or seedling plant that is between the cotyledons and the radicle or root.

[hypo- + cotyl(edon).]

hypocotyl

(ˌhaɪpəˈkɒtɪl) n (Botany) the part of an embryo plant between the cotyledons and the radicle[C19: from hypo- + cotyl(edon)] ˌhypoˈcotylous adj

hy•po•cot•yl

(ˌhaɪ pəˈkɒt l)

n. the seedling stem that develops below the cotyledons in the plant embryo. [1875–80; hypo- + cotyl (edon)] hy`po•cot′y•lous, adj.

Translations

Hypocotyl

hypocotyl

[′hī·pə‚käd·əl] (botany) The portion of the embryonic plant axis below the cotyledon.

Hypocotyl

in sprouting plants, the section of the stem extending from the root collar (the zone between the main stem and the root) to the place of attachment of the cotyledons. In the embryo, the hopocotyl is the rudimentary stem. The sprouts of some plants have an elongate hypocotyl that bears assimilative cotyledons. This type of aboveground germination characterizes hornbeam. In other plants the hypocotyl is underdeveloped, and the cotyledons do not appear on the surface. Such underground germination is typical of the pea and the oak.

The anatomical structure of the hypocotyl retains its embryonic character. It may give rise to adventitious shoots, roots, or leaves (when the apex of the epicotyl is removed, as in cyclamen). In some plants the hypocotyl becomes the repository of nutrients (for example, the tuber in cyclamen). In many root crops, including the turnip, carrot, and sugar beet, the hypocotyl consists of the fleshy part of the storage organ, which is found between the stem base and the root proper.

L. V. KUDRIASHOV

单词	hypocotyl
释义	hypocotyl hypocotylbean seed germinating hy·po·cot·yl H0365200 (hī′pə-kŏt′l)n. The part of a plant embryo or seedling plant that is between the cotyledons and the radicle or root. [hypo- + cotyl(edon).] hypocotyl (ˌhaɪpəˈkɒtɪl) n (Botany) the part of an embryo plant between the cotyledons and the radicle[C19: from hypo- + cotyl(edon)] ˌhypoˈcotylous adj hy•po•cot•yl (ˌhaɪ pəˈkɒt l) n. the seedling stem that develops below the cotyledons in the plant embryo. [1875–80; hypo- + cotyl (edon)] hy`po•cot′y•lous, adj. Translations Hypocotyl hypocotyl [′hī·pə‚käd·əl] (botany) The portion of the embryonic plant axis below the cotyledon. Hypocotyl in sprouting plants, the section of the stem extending from the root collar (the zone between the main stem and the root) to the place of attachment of the cotyledons. In the embryo, the hopocotyl is the rudimentary stem. The sprouts of some plants have an elongate hypocotyl that bears assimilative cotyledons. This type of aboveground germination characterizes hornbeam. In other plants the hypocotyl is underdeveloped, and the cotyledons do not appear on the surface. Such underground germination is typical of the pea and the oak. The anatomical structure of the hypocotyl retains its embryonic character. It may give rise to adventitious shoots, roots, or leaves (when the apex of the epicotyl is removed, as in cyclamen). In some plants the hypocotyl becomes the repository of nutrients (for example, the tuber in cyclamen). In many root crops, including the turnip, carrot, and sugar beet, the hypocotyl consists of the fleshy part of the storage organ, which is found between the stem base and the root proper. L. V. KUDRIASHOV hypocotyl hypocotyl the shoot in a young germinating seedling, located below the cotyledon. See GERMINATION and Fig. 171 .
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