GENETIC-DIFFERENCES IN WOUND-INDUCED ETHYLENE PRODUCTION AMONG DIFFERENT CLONES OF SALIX-VIMINALIS L

Ethylene production from wounded leaves of Salix viminalis L. has been followed. The study included 24 clones belonging to 8 families. The r elation between wound-induced ethylene accumulation for the clones and several resistance characteristics were studied. Ethylene accumulatio n differed significantly both among families and among clones, for exa mple 75 ppm to 217 ppm and 70 ppm to 203 ppm respectively, 9h after wo unding. No correlations between ethylene production and resistance to gall midge, rust, leaf beetle and trysin inhibitor production were obs erved. Both resistance to gall midge and rust varied considerably in t he clones studied, so the lack of correlation indicates that we do not have a clear relationship between ethylene production and these trait s.