Skip to main content
SLU:s publikationsdatabas (SLUpub)

Forskningsartikel2008Vetenskapligt granskad

Mini-seedlings of Picea abies are less attacked by Hylobius abietis than conventional ones: Is plant chemistry the explanation?

Danielsson, Marie; Kannaste, Astrid; Lindstrom, Anders; Hellqvist, Claes; Stattin, Eva; Langstrom, Bo; Borg-Karlson, Anna-Karin

Sammanfattning

The pine weevil, Hylobius abietis (L.), is a major pest in conifer reforestation areas in the Palaearctic region. Size and chemistry of the seedlings may explain the damage rates in plantations. The performance of 10-week containerized seedlings (mini-seedlings) was compared with 1-year-old conventional seedlings of Norway spruce, Picea abies (L.), in a field experiment in central Sweden. After 2 years the weevil damage was lower for the mini-seedlings than for the conventional seedlings (3.5 vs 55%). After 3 years, the overall survival was 82 and 75%, respectively. Weevil damage was the main cause of mortality for conventional seedlings, whereas mini-seedlings mainly died from drought. Volatiles of the two seedling types were compared by solid-phase microextraction-gas chromatography -mass spectrometry (SPME-GC-MS). Unwounded mini-seedlings and conventional seedlings differed in their compositions of monoterpenes and sesquiterpenes. Miniseedlings mainly emitted limonene, known to be repellent to the pine weevil. When wounded, green leaf volatiles were released by mini-seedlings while the pine weevil attractant alpha-pinene was released by conventional seedlings. Volatiles may partly explain the mini-seedlings' resistance against weevil attack. Further studies are needed to clarify how long this miniseedling effect remains.

Nyckelord

green leaf volatiles; growth; Hylobius abietis; Picea abies; seedling size; survival; terpenes; weevil damage

Publicerad i

Scandinavian Journal of Forest Research
2008, Volym: 23, nummer: 4, sidor: 299-306

      SLU författare

      • Långström, Bo

        • Institutionen för entomologi, Sveriges lantbruksuniversitet

      Globala målen

      Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald

      UKÄ forskningsämne

      Ekologi
      Skogsvetenskap

      Publikationens identifierare

      DOI: https://doi.org/10.1080/02827580802203560

      Permanent länk till denna sida (URI)

      https://res.slu.se/id/publ/22968