Effects of seed sources and fungi on ectomycorrhizal formation and growth of containerized tamarack seedlings / by Hong Zhu. --
Notice bibliographique
Résumé
The objectives of this study were to investigate the host specificity of \nmycorrhizal fungi to tamarack (Larix laricina (Du Roi) K. Koch.) in pure culture synthesis and to examine the effects of seed sources and fungal species on the ectomycorrhizal formation and growth of containerized tamarack seedlings in a greenhouse. Of nine mycorrhizal fungi tested in pure culture synthesis, Cenococcum qeophilum, Laccaria laccata, Laccaria proxima, Hebeloma crustuliniforme and Pisolithus tinctorius demonstrated their ability to develop ectomycorrhizae with tamarack. Amanita porphyria, Rhizopogon vinicolor, Suillus qranulatus and S. tomentosus failed to form ectomycorrhizae. The number of confirmed mycorrhizal symbionts of tamarack has been increased from three, previously known, to seven from the results of the pure culture synthesis. \nContainerized seedlings of tamarack, representing four provenances and 17 \nopen-pollinated families in Ontario, were inoculated with vegetative inocula of four fungal species in the greenhouse. During an 18-week period, L. laccata, P. tinctorius, and C. geophilum formed ectomycorrhizae with 60, 12 and 7% of the total feeder roots, respectively. Suillus qranulatus failed to produce any mycorrhizae. The mycorrhizal formation was strongly governed by the seed sources and seed source x fungus interactions. The greatest difference in mycorrhizal formation by L. laccata was 20% between provenances and 32% between families. Seedlings inoculated with L. laccata exhibited the best growth in diameter, shoot volume and \ndry weight. The developrrient of root systems was differentially affected by \ndifferent fungal inoculations. Feeder root proliferation was stimulated by C. \ngeophilum, and lateral root growth was inhibited by L. laccata. Significant \nprovenance effects were also found in shoot height and root descriptive variables. Although the effects of family-within-provenance were significant in most of the seedling traits, family variation was generally not constant, varying with fungal inoculations. Genetic correlations were positive between lateral root and shoot traits and between feeder root frequency and mycorrhizal formation but negative between lateral root and mycorrhizal formation. \nIt is recommended that L. laccata is a suitable fungal species and C. geophilum, H. crustulinlforme, L. proxima and P. tinctorius are potential fungi for mycorrhizal inoculation of containerized seedlings of tamarack. This study reinforces the concept that seed sources should be tested with target fungi before a wide scale mycorrhizal inoculation is conducted.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,002 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».