Analysis of the Pollen Morphology and Cluster of Different Pummelo Germplasms
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Le résumé fourni par la source
The pollen morphological characteristics of 16 pummelos and 4 other citrus germplasms from Vietnam, Thailand, and China were observed using scanning electron microscopy (SEM). Observations included equatorial view, polar view, and exine ornamentation. The results showed that the pollen of all tested materials was monads, prolate, or subprolate. The average polar axis length of the pollen ranged from 29.121 to 37.043 µm, and that of the equatorial axis ranged from 19.861 to 25.911 µm. A t-test revealed that the polar axis of pollen from Chinese pummelo germplasms was significantly longer than that of varieties from Southeast Asia, indicating certain geographical differentiation. The apertures were all colporate type, predominantly with four to five colpi (75% of grains); only four colpi were observed in the remainder (25%). The pollen exine ornamentation of pummelo germplasms was perforated, whereas that of other citrus types was reticulate. Pummelos exhibited a smaller pori diameter (0.264–0.673 µm) and wider distance between pori (0.581–1.118 µm), while other citrus species had larger lumina (1.253–1.684 µm) and narrower muri (0.443–0.664 µm). Principal component analysis (PCA) and cluster analysis were performed based on pollen traits, and two principal component factors were extracted. The pummelo germplasms were divided into two subgroups: sweet pummelo and red pummelo, which demonstrated a correlation among their pollen morphology, flesh color, and flesh flavor. The phenotypic diversity of pollen among different pummelo germplasms may provide a valuable auxiliary reference for the identification and systematic classification of pummelos.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Analysis of the Pollen Morphology and Cluster of Different Pummelo Germplasms
- Date Crossref
- 24/10/2025
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Yunnan Institute of Tropical Crops pays non établi dans la noticeStructure de recherche
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Research Institute of Resource Insects pays non établi dans la noticeStructure de recherche
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Southwest Forestry University pays non établi dans la noticeUniversité ou école supérieure
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Huazhong Agricultural University National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops pays non établi dans la noticeUniversité ou école supérieure
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Honghe Tropical Agriculture Institute of Yunnan pays non établi dans la noticeStructure de recherche
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Yunnan Key Laboratory of Breeding and Utilization of Resource Insects pays non établi dans la noticeStructure de recherche
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College of Forestry pays non établi dans la noticeUniversité ou école supérieure
Yunnan Institute of Tropical Crops, Research Institute of Resource Insects et Southwest Forestry University, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.