Freezing impact on cone dehiscence, samara release, and seed germination in Casuarina cunninghamiana (Casuarinaceae)

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dc.authoridRiley, Ian Timothy/0000-0002-3592-0785
dc.contributor.authorRiley, Ian T.
dc.contributor.authorSaygi, A. Hayriye
dc.date.accessioned2024-11-07T13:24:06Z
dc.date.available2024-11-07T13:24:06Z
dc.date.issued2021
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractFreezing as a climatic extreme can contribute to patterns of plant distribution by potentially impacting mechanisms of seed release. Therefore, the impact of freezing on samara release and seed germination in infructescences (cones) of Casuarina cunninghamiana Miq. was assessed. Cones at field moisture content were frozen (22 h) and thawed (2 h) through zero to five cycles. Freezing impaired cone dehiscence and samara release (<1% samaras released with >= 2 freezing cycles) and reduced germination from frozen samaras still in the cone (30% to 50% loss in total germination with one to five freezing cycles, respectively). Seed germination from a sample of air-dried samaras was only mildly impacted (10% drop in total germination with five freezing cycles). This vulnerability of C. cunninghamiana to freezing damage, particularly samara release, appears to be a novel finding for woody perennials with fruiting structures that are retained in the canopy during winter. Vulnerability to freezing damage also appears to be a potential factor in species persistence and invasiveness.
dc.description.sponsorshipAyhan Sahenk Foundation
dc.description.sponsorshipEniola Ajibola Olowu and Kaddijatou Jawneh are thanked for their help in sample collection and support to A.H.S. in the completion of her thesis project. Author A.H.S. was supported on a scholarship provided by the Ayhan Sahenk Foundation.
dc.identifier.doi10.1139/cjb-2021-0031
dc.identifier.endpage588
dc.identifier.issn1916-2790
dc.identifier.issn1916-2804
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85114138983
dc.identifier.scopusqualityQ3
dc.identifier.startpage581
dc.identifier.urihttps://doi.org/10.1139/cjb-2021-0031
dc.identifier.urihttps://hdl.handle.net/11480/13921
dc.identifier.volume99
dc.identifier.wosWOS:000692003000005
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCanadian Science Publishing
dc.relation.ispartofBotany
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectabiotic stress
dc.subjectcold tolerance
dc.subjectfreezing damage
dc.subjectreproductive biology
dc.titleFreezing impact on cone dehiscence, samara release, and seed germination in Casuarina cunninghamiana (Casuarinaceae)
dc.typeArticle

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