DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 3-4/2020 str. 52     <-- 52 -->        PDF

subjected to soaking 48 hr water, 8 week stratification and GA3 applications (50, 100 and 400 ppm). The difference between the treatments was tested by analyses of variance and the significance of differences between groups was tested by Duncan’s test (Table 2 and Table 3)
There was no effect of seed collection time on germination. The highest germination percentage was recorded after 8 weeks of cold-moist stratification (49,6 %).This result showed that 8 weeks cold-moist stratification significantly increased germination. Soaking in water of nonstratified seeds (stratification 3) wasn’t any significant difference on seed germination (Table 3). GA3 treatment had a significant effect on germination (Table 2) but there wasn’t any difference between GA3 doses (Table 3).Germination percentages were also evaluated in terms of treatments (Figure 1).
The highest germination percentage in the growing chamber was obtained in seeds collected at second seed collection time and subjected to GA3 process after eight weeks of stratification (62 %). Germination percentage was lower in control seeds. The soaking seeds in water for 48 hr wasn’t any significant effect on germination (Figure 1).
Greenhouse Experiments – Pokus u stakleniku
The seeds collected at three different times were sown (15.01.2009) in the greenhouse after they had been subjected to soaking in water for 48 hr, stratification for 8 w and GA3 treatments (100 and 400 ppm). The air temperature in the greenhouse was at +4 0C in the morning, +7 0C at noon and +9 0C in the evening at the begining of first germination (26.01.2009). The average temperature in the greenhouse was at +11 0C in the morning, at +15 0C at noon and at 19 0C in the evening until the last date of germination. Germinants were counted at weekly. The difference between the treatments was tested by analyses of variance and the significance of differences between groups was tested by Duncan’s test (Table 4 and Table 5)