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Volatile emissions from pine seedlings: age-related changes and chemotypes
KTH, Skolan för kemivetenskap (CHE), Kemi, Organisk kemi. (Ecological Chemistry Group)
KTH, Skolan för kemivetenskap (CHE), Kemi, Organisk kemi. (Ecological Chemistry Group)
Dalarna University, School of Industrial Technology and Management.
Dalarna University, School of Industrial Technology and Management.
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(Engelska)Manuskript (Övrigt vetenskapligt)
Nationell ämneskategori
Organisk kemi
Identifikatorer
URN: urn:nbn:se:kth:diva-8335OAI: oai:DiVA.org:kth-8335DiVA, id: diva2:13628
Anmärkning
QC 20100818Tillgänglig från: 2008-05-06 Skapad: 2008-05-06 Senast uppdaterad: 2010-08-18Bibliografiskt granskad
Ingår i avhandling
1. Volatiles of Conifer Seedlings: Compositions and Resistance Markers
Öppna denna publikation i ny flik eller fönster >>Volatiles of Conifer Seedlings: Compositions and Resistance Markers
2008 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Pine weevils cause major damage to newly planted conifer seedlings in reforestation areas. However, recent findings indicate that small (“mini”) seedlings, planted at the age of 7-10 weeks, are gnawed less by pine weevils than the larger, conventionally planted seedlings. Thus, it has been proposed that planting young conifer seedlings in clear-cut areas may reduce the damage caused by pine weevils. In attempts to determine why mini seedlings appear to be less damaged by pine weevils than “conventional” seedlings, the volatiles released by Norway spruce and Scots pine mini seedlings were investigated, since such chemicals are of great importance in herbivore-plant communication, inter alia acting as repellents, attractants or antifeedants.

Volatiles from the seedlings were collected, separated and identified by solid phase microextraction (SPME) followed by gas chromatography-mass spectrometry.

The results show that there are high levels of chemodiversity among both spruce and pine seedlings. Between-tissue and age-related variations in their emissions were also found.

Norway spruce clones infested by mites were also examined to assess genotype- and pest-specific stress reactions of Norway spruce. Finally, the effects of certain spruce defense compounds on the behavior of the large pine weevil Hylobius abietis were examined.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH, 2008. s. 51
Serie
Trita-CHE-Report, ISSN 1654-1081 ; 2008:34
Nyckelord
Conifers, Norway spruce, Scots pine, Nalepella, Oligonychus ununguis, green leaf volatiles, terpenes, aromatics, benzenoids, SPME, induced defense reaction
Nationell ämneskategori
Organisk kemi
Identifikatorer
urn:nbn:se:kth:diva-4723 (URN)978-91-7178-962-4 (ISBN)
Disputation
2008-05-19, F3, Lindstedtsvägen 26, Stockholm, 10:00
Opponent
Handledare
Anmärkning
QC 20100818Tillgänglig från: 2008-05-06 Skapad: 2008-05-06 Senast uppdaterad: 2010-08-18Bibliografiskt granskad

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