Effect of pretreatment on the germination of Eucalyptus gunnii Hook. seeds
Zbigniew Koziara, Zbigniew Pindel
Department of Ornamental Plants
29 Listopada 54, 31-425 Kraków, Poland
The aim of the study was to describe the conditioning methods of Eucalyptus
gunnii Hook. seeds. The stratification of seeds did not change their
germination capacity but it shorted the average time of one seed
germination by 29% as compared with the non-stratified seeds. Gibberellic
acid (GA3) had a similar but poorer effect on germination.
Different methods of soaking in water affected oxygen concentration in the
environment of seeds. Dripping water ensured a good contact of seeds with
atmospheric oxygen and washed out toxic products of seed metabolism,
contributing to the stimulation of germination parameters. Deep seed
drenching (under a water layer of 5 cm) inhibited the germination process
owing to the limited oxygen accessibility and propably also to the
accumulation of toxic metabolic products of seeds. Shallow seed drenching
as an intermediate system did not change the germination to a
statistically significant degree.
Koziara Z., Pindel Z., 1998. Effect of pretreatment on the germination of Eucalyptus
gunnii Hook. seeds. Folia Horticulturae 10/2: 45-52.