Seed germination may explain differences in invasiveness and prevalence : a case study using cat's claw creeper (Dolichandra unguis-cati)

Buru, Joshua Comrade, Dhileepan, Kunjithapatham, Osunkoya, Olusegun O., & Scharaschkin, Tanya (2014) Seed germination may explain differences in invasiveness and prevalence : a case study using cat's claw creeper (Dolichandra unguis-cati). In Baker, Matthew (Ed.) 19th Australasian Weed Conference : "Science, Community and Food Security: the Weed Challenge", Tasmanian Weed Society, Hobart, Tasmania, Australia, pp. 223-226.

View at publisher (open access)

Abstract

High germination rates and rapid germination behavior in response to different environmental cues are traits that may be associated with invasiveness. Cat’s claw creeper (Dolichandra unguis-cati (L.) Lohmann (syn. Macfadyena unguis-cati (L.) Gentry), a Weed of National Significance has two forms, a long-pod (LP) form and a short-pod (SP) from. The LP form occurs in only a few localities in southeast Queensland while the SP form is widely distributed in Queensland and New South Wales. The aims of this investigation were: to evaluate whether there are significant differences in germination traits between the two forms of cat’s claw creeper; and if there are any significant differences, to find out whether the differences in germination can be related to prevalence and invasiveness levels for the two forms. Long pod and short pod seeds collected in 2009, 2010, 2011, 2012 and 2013 from various localities in Qld were germinated in growth chambers in early 2013. The growth chambers were set to 10/20 ºC, 15/25 ºC and 20/30 ºC temperature cycles. Seeds from 2009-2012 of either form did not germinate, while for the fresh seeds (2013), SP exhibited significantly higher total germination percentage and rates than LP. Assuming that the two forms were introduced in Australia at around the same period, these results could explain why SP is widely distributed (and therefore more invasive) in Qld and NSW while LP is only confined to a few localities in southeast Qld.

Impact and interest:

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

99 since deposited on 23 Nov 2014
40 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 78887
Item Type: Conference Paper
Refereed: Yes
Keywords: invasive, non-specific, germination rate, germination percentage, temperature, weeds, Dolichandra unguis-cati
ISBN: 9780646924540
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000)
Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > ECOLOGY (060200)
Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > PLANT BIOLOGY (060700) > Plant Developmental and Reproductive Biology (060703)
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the author]
Deposited On: 23 Nov 2014 22:45
Last Modified: 25 Nov 2014 00:56

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page