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Temperature effect on fructan storage and regeneration of Canada thistle (Cirsium arvense (L.) Scop)

Nkurunziza, L. and Streibig, J.C. (2013) Temperature effect on fructan storage and regeneration of Canada thistle (Cirsium arvense (L.) Scop). In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 79-80.

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Summary

Organic farming is challenged by perennial weeds such as Canada thistle. The increasing CO2 concentration levels causing temperature increase may lead to an increased photosynthesis and as a consequence elevated storage in underground perennating organs. In this study, we analyzed fructan, the main storage in Canada thistle, in juvenile and mature plants treated with different temperatures. Low temperatures caused higher concentrations of fructan in four weeks old plants. Proximal root fragments had higher amount of fructan than distal fragments. Regenerative ability from roots with different fructan concentrations was also associated to temperature and age. This implies that the timing of root fragmentation in autumn should occur earliest four weeks before low temperatures for each location. Otherwise, new shoots would accumulate fructan causing sprouting the subsequent spring.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Agrovoc keywords:
Language
Value
URI
English
Perennial weeds
http://aims.fao.org/aos/agrovoc/c_5697
English
Environmental temperature
http://aims.fao.org/aos/agrovoc/c_2598
English
Roots
http://aims.fao.org/aos/agrovoc/c_6651
Subjects: Crop husbandry
Crop husbandry > Weed management
Research affiliation: International Conferences > 2013: NJF Seminar 461 - Organic farming systems as a driver for change
ISSN:1653-2015
Deposited By: Sørensen, Peter
ID Code:24537
Deposited On:06 Nov 2013 21:58
Last Modified:06 Nov 2013 21:58
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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