Show simple item record

dc.contributor.authorCross, A.
dc.contributor.authorMerritt, D.
dc.contributor.authorTurner, S.
dc.contributor.authorDixon, Kingsley
dc.date.accessioned2017-01-30T13:19:55Z
dc.date.available2017-01-30T13:19:55Z
dc.date.created2015-10-29T04:09:40Z
dc.date.issued2013
dc.date.submitted2015-10-29
dc.identifier.citationCross, A. and Merritt, D. and Turner, S. and Dixon, K. 2013. Seed germination of the carnivorous plant Byblis gigantea (Byblidaceae) is cued by warm stratification and karrikinolide. Botanical Journal of the Linnean Society. 173 (1): pp. 143-152.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/30488
dc.identifier.doi10.1111/boj.12075
dc.description.abstract

Byblidaceae is one of the most poorly studied carnivorous plant families, with seed dormancy and germination biology remaining unresolved. This knowledge deficit has significant conservation and management implications, particularly as the most southerly distributed species, the south-west Western Australian endemic Byblis gigantea, is listed as critically endangered. This study examined the ecophysiology of seed dormancy and germination in B. gigantea in concert with a study of the population dynamics of a single plant community. Mass seedling emergence and plant establishment were observed after a wildfire in 2007 in the natural population, followed by a rapid decline in mature individuals (91%) over a 4-year monitoring period, with almost no inter-fire recruitment (1.4% of all emergence) observed. Seeds possessed a fully developed embryo, and the germination characteristics of fresh seeds classified them as showing physiological dormancy. Seed dormancy was partially alleviated by warm stratification (30 °C) for 8 weeks prior to incubation at 15 °C, with c. 40% germination observed. With the additional exposure of seeds to the germination-active chemical in smoke, karrikinolide, the germination of warm-stratified seeds increased to 89%. Seeds also displayed orthodox storage behaviour and appeared to be amenable to long-term seed banking for conservation. These results present the first observation of the stimulation of the germination of a carnivorous plant by a smoke-derived compound.

dc.titleSeed germination of the carnivorous plant Byblis gigantea (Byblidaceae) is cued by warm stratification and karrikinolide
dc.typeJournal Article
dcterms.dateSubmitted2015-10-29
dcterms.source.volume173
dcterms.source.number1
dcterms.source.startPage143
dcterms.source.endPage152
dcterms.source.issn0024-4074
dcterms.source.titleBotanical Journal of the Linnean Society
curtin.digitool.pid232361
curtin.departmentDepartment of Environment and Agriculture
curtin.identifier.elementsidELEMENTS-80077
curtin.accessStatusOpen access via publisher


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record