Morphometric analysis of leaf indumentum distinguishes greyish oak ( Quercus pedunculiflora K. Koch) and pedunculate oak ( Quercus robur L.) across their Central-Eastern European range
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Le résumé fourni par la source
Abstract White oaks are keystone species in European lowland forests. The micro-morphology of pedunculate oak ( Quercus robur L.) and greyish oak ( Quercus pedunculiflora K. Koch), two closely related taxa sometimes treated as subspecies, was compared in the present paper. Greyish oak – distributed in the Balkans and Asia Minor – is proposed as a climate-resilient substitute for Q. robur L. under intensifying droughts. For our study, we collected leaf samples from populations in Hungary, Romania and Bulgaria, and compared them using indumentum characteristics, focusing on trichome types as potential diagnostic markers for forestry practice. Morphological observations of trichome rays collected at standardised sampling plots were compared using either classical statistics (countable measurements) or morphological classification (trichome types). Three trichome types were present on greyish oak: glandular and simple-uniseriate, stellate, and fasciculate trichomes, whereas pedunculate oak predominantly displayed simple-uniseriate trichomes, except for one intermediate individual. On average, the simple-uniseriate trichome rays on the leaf epidermis of Q. pedunculiflora K. Koch measured 79.81 µm in length, while the same in Q. robur L. were found to be 67.41 µm; a difference that was statistically significant. Fasciculate trichomes (mean length 274.99 µm) were diagnostic for Q. pedunculiflora K. Koch, despite occasional stellate trichomes in transitional forms (mean length 149.55 µm). These results confirm robust micromorphological differentiation between the taxa, validating trichome traits as reliable identification tool. The denser indumentum of greyish oak may reflect drought adaptation, highlighting its potential for assisted gene-flow in climate-smart forestry. The clear morphological difference in leaf indumentum can help practicing foresters to distinguish between the two oaks.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Morphometric analysis of leaf indumentum distinguishes greyish oak ( <i>Quercus pedunculiflora</i> K. Koch) and pedunculate oak ( <i>Quercus robur</i> L.) across their Central-Eastern European range
- Date Crossref
- 01/07/2025
- Éditeur
- Walter de Gruyter GmbH
- 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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Kiskunság National Park pays non établi dans la noticeStructure de recherche
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University of Debrecen pays non établi dans la noticeUniversité ou école supérieure
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University of Sopron pays non établi dans la noticeUniversité ou école supérieure
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Danube-Drava National Park Directorate pays non établi dans la noticeInstitution
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Németh Márton str. 23 pays non établi dans la noticeInstitution
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HUN-REN–UD Conservation Biology Research Group pays non établi dans la noticeInstitution
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Institute of Biology and Ecology Department of Botany pays non établi dans la noticeStructure de recherche
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Faculty of Forestry Institute of Environmental Protection and Nature Conservation pays non établi dans la noticeUniversité ou école supérieure
Kiskunság National Park, University of Debrecen et University of Sopron, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.