hy·po·cot·yl

(hī′pə-kŏt′l)

The part of a plant embryo or seedling plant that is between the cotyledons and the radicle or root.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

hypocotyl

(ˌhaɪpəˈkɒtɪl)

(Botany) the part of an embryo plant between the cotyledons and the radicle

[C19: from hypo- + cotyl(edon)]

ˌhypoˈcotylous adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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

hypocotyle

Mentioned in

epigeal

References in periodicals archive

Hypocotyl length (HL, in cm) and primary root length (RL, in cm) was measured in ten normal seedlings randomly obtained after count of the total germination (14th day) using meter scale.

Seed priming improves the germination and growth rate of melon seedlings under saline stress/Condicionamento de sementes melhora a germinacao e a taxa de crescimento das plantulas de melao sob estresse salino

Chinese scientists prepared soy milk from germinated soybean--Glycine max (L.) Merrill--that featured different hypocotyl lengths.

Germination improves physicochemical, textural, sensory characteristics of soy yogurt

This procedure was carried out by packing the colonized rice grains near the hypocotyl of the seedlings and later covering the rice with the substrate.

Characterization, pathogenicity and anastomosis groups of Rhizoctonia solani from watermelon

For shoot or hypocotyl length, water stress (-0.4 MPa) drastically limited the growth of all materials studied (Table 2).

Germination and tolerance of cowpea (Vigna unguiculata) cultivars to water stress/Germinacao e tolerancia de cultivares de feijao-caupi (Vigna unguiculata) ao estresse hidrico

Increased Agrobacterium-mediated transformation and rooting efficiencies in canola (Brassica napus L.) from hypocotyl segment explants.

Establishment of a High-efficiency Genetic Transformation System of Cucumber (Cucumis sativus) using Csexpansin 10 (CsEXP10) Gene

The material (root, hypocotyl, cotyledons, epicotyl and eophyll) were fixed in glutaraldehyde (1% in 0.1 M phosphate buffer, pH 7.2) (Karnovsky, 1965) and later transferred to 70% ethyl alcohol following the protocol of Johansen (1940).

Germination and seedling structure of Ruprechtia laxiflora Meissn. (Polygonaceae)/Germinacao dos diasporos e estrutura das plantulas de Ruprechtia laxiflora Meissn. (Polygonaceae)

The objective of the present study was to determine a protocol for the in vitro propagation of Aspidosperma polyneuron using epicotyl and hypocotyl explants obtained from in vitro germinated seeds.

Micropropagation of aspidosperma polyneuron Mull. Arg. from in vitro germinated seedlings/Micropropagacao de aspidospermapolyneuron. Mull. Arg. a partir de plantulas germinadas in vitro

Seed extracts showed the lowest [IC.sub.50] values (72.98 ppm for hypocotyl and 77.43 ppm for rootlet development), while the root extract showed the highest values (367.5 ppm for hypocotyl and 472.5 for rootlet).

Allelopathic Activity of Extracts from Different Brazilian Peanut (Arachis hypogaea L.) Cultivars on Lettuce (Lactuca sativa) and Weed Plants

Finally, growth inhibition assays for the radicle and hypocotyl (two parts of the seed embryo) in chia plants (Salvia hispanica) were performed to test the acute toxicity of the aqueous effluents obtained after photodegradation.

Synergetic Enhancement of the Photocatalytic Activity of Ti[O.sub.2] with Visible Light by Sensitization Using a Novel Push-Pull Zinc Phthalocyanine

Paeonia lactiflora seeds display both hypocotyl and epicotyl dormancy and time from sowing to fully germination takes six to seven months under natural conditions.

Transcriptome Analysis of Two Different Developmental Stages of Paeonia lactiflora Seeds