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Cryoconservation et longévité des graines de deux hybrides de Salix.

Seed cryopreservation and longevity of two Salix hybrids.

Auteurs : WOOD C. B., PRITCHARD H. W., LINDEGAARD K.

Type d'article : Article

Résumé

The effects of desiccation and storage temperature on the viability and longevity of willow seeds was investigated using two hybrids, Salix rehderiana x (Salix x capreola) [cross 458] and Salix x sericans x Salix viminalis [cross 512]. Freshly harvested seeds of both crosses survived silica gel drying down to 3 to 5% moisture content. Hybrid 458 seeds stored in liquid nitrogen for 3 d retained viability when equilibrated to no higher than 45% relative humidity (RH) (pre-storage), showed slightly reduced survival at 65% RH and exhibited no survival at 82% RH. The level of survival after 68 d for seeds pre-equilibrated to either 10 or 65% RH and stored at four temperatures was -196 °C > -20 °C > 2 °C > 16 °C.

Détails

  • Titre original : Seed cryopreservation and longevity of two Salix hybrids.
  • Identifiant de la fiche : 2003-3038
  • Langues : Anglais
  • Source : CryoLetters - vol. 24 - n. 1
  • Date d'édition : 01/2003
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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