Infructescence and samara morphometrics and potential mechanism of samara release in Allocasuarina and Casuarina (Casuarinaceae)

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dc.authoridRiley, Ian Timothy/0000-0002-3592-0785
dc.contributor.authorRiley, Ian T.
dc.date.accessioned2024-11-07T13:24:34Z
dc.date.available2024-11-07T13:24:34Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn addition to samara aerodynamics, mechanisms of samara release will contribute to seed dispersal outcomes. Analysis of species descriptions of Australian members of the Casuarinaceae (sheoaks) indicated cone shrinkage to be a possible mechanism enhancing samara release. However, measurement of cones of nine species of Allocasuarina and Casuarina did not support this hypothesis, but outward movement of samaras both in the field and in oven-dried cones indicated that another mechanism was operating. Microscopic examination revealed that the proximal margins of the bracteoles are involute after drying, and it is postulated that incurving of the bracteoles during drying moves samaras outward against gravity enhancing samara release. This study also revealed inconsistencies in cone and samara metrics between field samples (1-3 specimens for 9 species) and the published descriptions. This could lead to identification uncertainties, and indicates the need to revise the descriptions to more fully encompass the variation in sheoaks across their natural and anthropogenic ranges.
dc.identifier.doi10.1071/BT19153
dc.identifier.endpage118
dc.identifier.issn0067-1924
dc.identifier.issn1444-9862
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85085105876
dc.identifier.scopusqualityQ2
dc.identifier.startpage108
dc.identifier.urihttps://doi.org/10.1071/BT19153
dc.identifier.urihttps://hdl.handle.net/11480/14179
dc.identifier.volume68
dc.identifier.wosWOS:000540867700003
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCsiro Publishing
dc.relation.ispartofAustralian Journal of Botany
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectanemochory
dc.subjectdiaspore release
dc.subjectmechanism
dc.subjectseed dispersal
dc.subjectwind dispersal
dc.titleInfructescence and samara morphometrics and potential mechanism of samara release in Allocasuarina and Casuarina (Casuarinaceae)
dc.typeArticle

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