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bean seed germinating


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


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


(ˌhaɪ pəˈkɒt l)

the seedling stem that develops below the cotyledons in the plant embryo.
[1875–80; hypo- + cotyl (edon)]
hy`po•cot′y•lous, adj.
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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.
Chinese scientists prepared soy milk from germinated soybean--Glycine max (L.) Merrill--that featured different hypocotyl lengths.
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.
For shoot or hypocotyl length, water stress (-0.4 MPa) drastically limited the growth of all materials studied (Table 2).
Increased Agrobacterium-mediated transformation and rooting efficiencies in canola (Brassica napus L.) from hypocotyl segment explants.
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).
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.
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).
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.
Paeonia lactiflora seeds display both hypocotyl and epicotyl dormancy and time from sowing to fully germination takes six to seven months under natural conditions.
Various explants such as leaf, stem, epicotyl, node, internode, axillary shoot tip, petiole, hypocotyl, root, cotyledonary leaf, and embryo are employed for regeneration (Tables 2 and 3).