Hjältén, Joakim
- Institutionen för skoglig zooekologi, Sveriges lantbruksuniversitet
Sammanfattning
The aim of this study was to determine the inheritance pattern of phenolic secondary compounds in pure and hybrid willows and its consequences for plant resistance to leaf-feeding insects. F1, F2, and back-cross hybrids along with pure species were produced by hand pollination of pure, naturally-growing Salix caprea (L., Salicaceae) and S. repens (L.) plants. Leaf concentrations of condensed tannins and seven different phenolic glucosides were determined by using butanol-HCl and HPLC analyses. Insect herbivore leaf damage was measured on the same leaves as used for chemical analyses. We found hybrids to be approximately intermediate between the parental species: S. caprea with high levels of condensed tannins and no phenolic glucosides, and S. repens with low levels of condensed tannins and high levels of phenolic glucosides. We also found a negative correlation between concentrations of condensed tannins and phenolic glucosides, suggesting a trade-off in production of these two substances. F2 hybrids and the hybrid back-crossed to S. caprea were significantly more damaged by insect herbivores than the parental species and the F1 hybrid, indicating reduced resistance and possibly a selective disadvantage for these hybrid categories
Publicerad i
Journal of Chemical Ecology
2003, volym: 29, nummer: 5, sidor: 1143-1158
Utgivare: KLUWER ACADEMIC/PLENUM PUBL
SLU författare
Hallgren, Per
- Institutionen för skoglig zooekologi, Sveriges lantbruksuniversitet
- Institutionen för skoglig zooekologi, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Miljö- och naturvårdsvetenskap
Skogsvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1023/A:1023829506473
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/627