Inheritance and genetic mapping of fatty acids in soybean seed oil
Notice bibliographique
Résumé
The usage and value of soybean [('Glycine max' (L.) Merrill] oil is affected by its fatty acid profile. The objectives of this study were to: (1) characterize the inheritance of the altered fatty acid levels in the soybean lines developed at the University of Guelph; (2) investigate the environmental effects on the performance of RILs developed from crosses among the se lines and analyze the relationships among fatty acid contents, seed quality and agronomic traits; (3) map QTLs for altered fatty acid levels and investigate QTLxenvironment interactions. The inheritance study indicated that palmitic acid segregation involved two loci, 'Fap1' had an additive genetic effect and 'Fapx' exhibited partial dominance. Stearic acid segregated at the 'Fas' locus with a dominant genetic effect. Linolenic acid segregated at the 'Fan' locus with an additive genetic effect. Combined analysis of variance indicated that entry * environment interaction effects were significant for all traits. Year effects were larger than location effects for palmitate, stearate, and oleate contents, whereas location effects were greater than year effects for all other traits including linoleate, linolenate, protein, and oil contents, plant height, lodging, maturity and yield. The climatic data indicated that the minimum daily temperature rather than the mean and maximum was the most important factor affecting the unsaturated fatty acid levels. Trait correlations varied upon the population, generations and growing environment. There was a general lack of correlations between the fatty acid composition and agronomic traits. Both the 'Fas' and 'Fan' loci were mapped to LG B2 at a 21 cM distance in between. Markers located at 'Fas' and 'Fan' locus explained over 70% and 80%, respectively, of the phenotypic variation for stearic acid and linolenic acid levels. The elevated stearic acid level conferred by 'Fas' locus was most likely to be the result of reduced activity of stearoyl-ACP desaturase which catalyzes the reaction form stearic acid to oleic acid in the fatty acid biosynthesis pathway. Molecular markers with high R2 values, or the QTLs with high LOD scores were more likely to be detected in multiple environments. No consistent segregation distortion pattern for markers was detected between the two mapping populations used in this study.
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 ».