| Titre : | Evaluating the germination capacity of commercial seedlots of Quercus petraea |
| Auteurs : | Céline Le Pichon ; M. Guibert ; CEMAGREF NOGENT SUR VERNISSON RGNO |
| Type de document : | article/chapitre/communication |
| Année de publication : | 2001 |
| Format : | p. 377-385 |
| Note générale : |
Sigle : CEMAGREF Sigle : RGNO Diffusion tous publics |
| Langues: | = Anglais |
| Mots-clés: | FRANCE ; QUERCUS PETRAEA ; SEMENCE ; STOCKAGE ; DESHYDRATATION ; GERMINATION ; EVALUATION ; VIABILITE ; STRESS HYDRIQUE |
| Résumé : | About 120 000 kg of sessile Oak acorns (Quercus petraea Liedl.) are collected each fall in France. A part of them have to be stored from one year to the next for a regular production of plants. So far, only laboratory germination tests (8 weeks) are used to predict acorn viability. To improve the management of commercial seedlots and decide whether to store them or not, it would be useful to rapidly asses their viability. In the literature, two parameters present correlation with viability for artificially dehydrated seeds. We wanted to know if the same correlation existed for commercially stored acorns. Contrary to artificially dehydrated acorns, the moisture content of the embryonic axis of stored acorns does not correlate to the percentage of seedlings. A high embryonic axis moisture content (> 60%) is necessary but not sufficient to indicate good viability of the seedlot. During long duration storage, even if water stress in the embryonic axis is moderate, germination physiology necessitates additional water. Electrolyte leakage directly evaluates the effects of this water stress, a decrease in membrane integrity. This test can be a good indicator of viability for acorns after long duration storage. |
| Source : | Seed science and technology, vol. 29, n°2 |
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| Centre | Localisation | Section | Cote | Statut | Disponibilité |
|---|---|---|---|---|---|
| Val de Loire | Nogent | Articles/chapitres/communications | D 4634 | Empruntable | Disponible pour le prêt |
