Breeding report of a new dwarf banana cultivar Xianfen No. 1 with high resistance to Fusarium oxysporum f. sp. cubense
Notice bibliographique
Résumé
Xianfen No. 1 is a new banana (Musa nana Lour.) cultivar bred from a natural mutant of Guangfen No. 1 (ABB). A surviving dwarf mutant was identified from a Guangfen No. 1 orchard in Zhongshan in 2016 and then propagated by tissue-culture. From 2017 to 2018, 100 plants were planted in Zhongshan, Jiangmen and Guangzhou, and they harvested from 2018 to February 2019. All plants exhibited dwarf characteristics and high resistance to Fusarium wilt compared with Guangfen No. 1. In 2020, the plants still showed high resistance to Fusarium wilt and then buds were collected to further propagate. By 2023, the incidence rate of Fusarium wilt of nearly 10 000 plants in several places (Guangdong, Guangxi, Hainan, Fujian and Yunnan province) was less than 5%. The comprehensive trait was stable. The height of pseudostem of Xianfen No. 1 plant was 2.09 m, which is over 1 m shorter than that of Guangfen No. 1 plant. The perimeter in bottom and middle of pseudostem were 70 and 48 cm, respectively. The leaf color of Xianfen No. 1 ranged from yellow green to light green. The leaf blade length was 146 cm, the leaf blade width was 47 cm, and the leaf ratio was 3.1. The growth cycle of the new plant was around 11.0-12.5 months, shorten than than that of Guangfen No. 1 and Fenza No. 1. During the flowering period, the fruit axis was relatively short and usually not perpendicular to the ground. The length and girth of the bunch was 42 cm and 87 cm, respectively. The length and girth of the peduncle was 19 cm and 21 cm, respectively. The fruit was short rounded, the length and girth of the fruit was 13.5 cm and 13.2 cm, respectively. The fruit pedicel length was 2 cm. The number of hands was 8 to 12, and the number of fruits of each hand was 12 to 18. The number of fruits was 100 to 135. The average bunch weight was 12.8 kg, the average finger weight was 91 g. The planting density would be180-220 plants per 666.7 m2 and the yield was 2300 kg per 666.7 m2. The mature fruit had a bright yellow skin, thick and easy to peel off. The flesh texture was firm, and the hardness of mature flesh could reach 1.2-1.5 kg·cm-2. The flesh was milky white, and smooth, with moderate sweetness and acidity. The soluble solid content of fruit was 28.30%, the titratable acid content was 4.99 mg·g-1, the total sugar content was 25.30%, the reducing sugar content was 23.30%, and the vitamin C content was 13.60 mg·100 g-1. Xianfen No. 1 had high resistance to Fusarium oxysporum f. sp. cubense race 1, Sigatoka, banana freckle, BBTV and CMV and also had strong wind resistance because of its dwarf pseudostem, but the resistance to cold was weak. It would be suitable for cultivation in the banana producing areas in China with absolute low temperature above 5℃.
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 machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| 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 | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 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 source (Gemma direct ou Codex distillé), 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 ».