| Abstrakt: |
This study was carried out to determine the effects of some pretreatments including soaking in 400, 600, 800, 1000 ppm GA3 for 24 hours and concentrate (96%) H2SO4 for 1, 3, 5 and 7 minutes on seed germination and to investigate how to overcome dormancy of Arbutus andrachne L. seeds. The seeds were sown at 24±1°C under darkness in laboratory, at 24±1°C in the greenhouse and under open field conditions. The statistical approach was a randomized complete block design with three replications. Germinated seeds were observed periodically during 90 days to determine germination percentages. The highest germination percentages were obtained from the seeds soaked in 800 ppm GA3 and sown in the laboratory, soaked in 400-800 ppm GA3 and sown in the greenhouse and soaked in 400 ppm GA3 and sown under open field conditions both open field conditions and in the greenhouse with 94.7%, 86.0% and 26.7%, respectively. On the other hand, the lowest germination percentages were obtained from the control seeds which were sown in the laboratory and greenhouse conditions (0.7% and 8.0%) for GA3 treatments. It can be said that the effect of H2SO4 pretreatments on germination of the seeds does not have positively. [ABSTRACT FROM AUTHOR] |
