SEEDBORNE FUNGI OF FLAX AND THEIR EFFECT ON SEED GERMINATION
Notice bibliographique
Résumé
Samples of seeds from 29 flax cultivars were used to study the effect of seven-year storage period on isolation frequencies of seedborne fungi. Ten of the cultivars were chosen to study the effect of storage period on seed germination. Storage of flax seed for 6 years had no deleterious effect on seed germination; however, a sharp decrease in viability of seed was observed in the seventh year. Clay cv. showed the lowest germination (8%) in the seventh year. A liner relationship was observed between storage period and germination for cvs. Ottawa 770B, Marshall, and C.I. 2008. Sixteen fungi were isolated from flax seeds over seven years. The isolated fungi were, Alternaria alternata, Stemphylium botryosum, Aspergillus flavus, A. niger, Chaetomium sp., Cladosporium sp., Drechslera sp., Epicoccum sp < em>., Fusarium solani, F. oxysporum, Nigrospora sp., Penicillium sp., Phoma sp., Stemphylium sp., Trichoderma sp., and Verticillium sp. In all years, no single cultivar yielded all the 16 fungi, and the frequency of fungi was affected by storage period. In the present study, linear correlation analysis was used to determine colonization incidence (CI)-colonization severity (CS) relationship of flax seedborne fungi over the seven-year period. The analysis revealed that CI-CS relationship of flax seedborne fungi conformed to the linear model regardless of the storage period within a six-year period-that is, the easily measured incidence values can be used for assessment of CS. A significant correlation between CI and CS was lacking in 2006. CI was less sensitive to storage period compared with CS. Isolation frequencies of some fungi were significantly correlated with seed germination. Most of these correlations were negative, which may indicate the presence of causal relationship between seedborne fungi and seed germination. Data for seed germination and frequencies of fungi, isolated from seeds, were entered into a computerized stepwise multiple regression analysis. Using the predictors supplied by the stepwise regression, seven models were constructed to describe the relationship between seed germination (dependent variable) and frequencies of the isolated fungi (independent variables or predictors). The R2 values of the models ranged from 12.50 to 50.20%, which indicates that seedborne fungi of flax play a minor role in determining variability in seed germination- that is, most of this variability is attributed to the effects of other biotic and abiotic factors.
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) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 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 ».