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Effect of pretreatment on the germination of Eucalyptus gunnii Hook. seeds

Zbigniew Koziara, Zbigniew Pindel

Department of Ornamental Plants
Agricultural University
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.