liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Comparing after-ripening response and germination requirements of Conyza canadensis and C. bonariensis (Asteraceae) through logistic functions
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6128-1051
2007 (English)In: Weed research (Print), ISSN 0043-1737, E-ISSN 1365-3180, Vol. 47, no 5, 433-441 p.Article in journal (Refereed) Published
Abstract [en]

Germination requirements and after-ripening effects during one year of dry storage at 15/5 and 25/15°C (day/night) were compared for Conyza bonariensis and C. canadensis (Asteraceae). A logistic function was fitted to the results from tests over time in various incubation conditions, using three populations of each species as replicates. Time required for response to dry storage was measured by using a new method; the third derivative of the logistic function. Therefore, a point when major germination was achieved could be detected, without having to rely on maximum germination (which is uncertain), individual data points or any subjectively chosen limit. Fresh seeds of both species were dependent on light for germination and after-ripening was mainly manifested by increasing germination in darkness. Low dormancy status and light requirement might indicate that soil cultivations should rapidly reduce the seed banks of these species, although fecundity and wind dispersal will affect population levels. The species differed in their germination response, with C. bonariensis germinating at lower temperatures than C. canadensis. This seemingly counter-intuitive result may explain the prevention of fatal germination of C. canadensis in cold conditions and its behaviour as a summer annual in northern climates, while C. bonariensis is restricted to warmer parts of the world.

Place, publisher, year, edition, pages
Blackwell , 2007. Vol. 47, no 5, 433-441 p.
Keyword [en]
Dormancy type, fleabane, horseweed, logistic function, response time
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-11881DOI: 10.1111/j.1365-3180.2007.00576.xOAI: oai:DiVA.org:liu-11881DiVA: diva2:18283
Note
The definitive version is available at www.blackwell-synergy.com: L M KARLSSON & P MILBERG, Comparing after-ripening response and germination requirements of Conyza canadensis and C. bonariensis (Asteraceae) through logistic functions, 2007, Weed Research, (47), 433-441. http://dx.doi.org/10.1111/j.1365-3180.2007.00576.x. Copyright: Blackwell Publishing www.blackwell-synergy.comAvailable from: 2008-05-22 Created: 2008-05-22 Last updated: 2017-12-13

Open Access in DiVA

fulltext(163 kB)434 downloads
File information
File name FULLTEXT01.pdfFile size 163 kBChecksum MD5
68d5e336bb08d45d26df7526552cf883916c6f8e617c13c2fcd644981585176b5326a4bb
Type fulltextMimetype application/pdf

Other links

Publisher's full textLink to Ph.D. Thesis

Authority records BETA

Karlsson, LailaMilberg, Per

Search in DiVA

By author/editor
Karlsson, LailaMilberg, Per
By organisation
Ecology The Institute of Technology
In the same journal
Weed research (Print)
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 434 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 160 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf