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Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-04-23

English

Subject field(s)
  • Ecosystems
  • Silviculture
DEF

One of the four main crown classes [of trees] recognized on a basis of relative status and condition in the crop, more particularly for establishing thinning grades for pure regular crops; the trees have their crowns in the lower layers of the canopy, the leading shoots are not free, and the trees are growing very slowly.

French

Domaine(s)
  • Écosystèmes
  • Sylviculture
DEF

Se dit d'un arbre dont la cime se situe dans la partie la plus basse du couvert d'un groupe équienne d'arbres et qui ne reçoit aucun éclairage direct, ni par en haut ni par les côtés.

Spanish

Campo(s) temático(s)
  • Ecosistemas
  • Silvicultura
DEF

[Dícese del] árbol cuya copa queda debajo de la de sus vecinos.

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Record 2 2003-06-05

English

Subject field(s)
  • Scientific Research
  • Plant Breeding
  • Bioengineering
  • Biotechnology
DEF

The propagation of plants in a controlled, artificial environment, using plastic or glass culture vessels, aseptic techniques, and a defined growing medium.

CONT

The procedures used for in vitro propagation comprise : (1) the selection of suitable explants, their sterilisation and transfer to nutrient medium, (2) the proliferation of shoots on multiplication medium and (3) the transfer of shoots to a rooting (or storage) medium and planting out.

CONT

The invention provides a process for a least semi-automated plant tissue culture propagation comprising : providing plant tissue culture containing a large number of densely packed meristematic areas, automatically separating and thinning the tissue into small clusters of meristematic tissues, bulk transporting the separated tissue aseptically to a separating apparatus wherein the tissue is washed and propagules of substantially uniform size and substantially free of phytotoxic cell debris are obtained, aseptically transporting the propagules to a culture vessel and distributing the propagules on the surface of a culture medium.

French

Domaine(s)
  • Recherche scientifique
  • Amélioration végétale
  • Technique biologique
  • Biotechnologie
DEF

Technique de propagation des plantes en tubes à essai, couramment utilisée dans le but d'obtenir des plantes saines ou pour avoir rapidement des plantes identiques à la plante d'origine.

CONT

La technique de micropropagation comprend les étapes suivantes : 1) sélection d'un explant propice, stérilisation et le transfert dans un milieu nutritif, 2) prolifération des pousses et multiplication en culture aseptique, 3) transfert des pousses à un milieu propice à l'enracinement et mise en serre.

Spanish

Campo(s) temático(s)
  • Investigación científica
  • Mejora vegetal
  • Bioingeniería
  • Biotecnología
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