Variability in germination and germination dynamics of differently treated seeds of Serbian spruce (Picea omorika Pancic/Purkynĕ)
2013
Genetic-physiological approach was used in the study of the quality of
Serbian spruce seed (Picea omorika /Pancic/Purkynĕ), collected in the
populations on the left bank of the river Drina. The seed originated from the
three populations that represent the overall ecological and productive
conditions of Serbian spruce populations in Bosnia and Herzegovina. Two
natural populations were selected: Veliki Stolac and Gostilj, and one planted
forest population in Srebrenica. The cones were collected in late autumn 2009
and early spring 2010. They were collected from five trees from Srebrenica
and Gostilj, and seven trees from Veliki Stolac. Immediately after they were
collected, the cones and seeds were processed and germination tests were
done. Germination, germination viability and germination dynamics were
studied in three categories of seed treatment: 1) control unit (just
processed seed), 2) seed stored for six months at 0-4 oC, 3) seed stored for
seven months at 0-4o C and treated with fungicide after five months of
storing. The number of germinated seed was observed and noted on the third,
fourth, fifth, seventh, tenth, fourteenth, twenty-first and twenty-eighth
day. There were significant differences in germination dynamics at the
population level and the level of treatment during the first couple of days
of germination test. Fungicide (captan) acted as an inhibitor on seed
germination process. The seeds originating from the largest population of
Veliki Stolac showed the best response to storing treatment with fungicide
related to germination dynamics. The seed originating from Srebrenica andkept
at low temperatures 0-4 °C without treatment with fungicides showed the best
result in germination. Regardless of the presence of differences in the
dynamics of germination, significant differences in germination regarding
different treatments on the last day of the test, were not recorded.
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