The dynamics of germination and morphometrics properties of Austrian pine (Pinus nigra Arnold) saplings in terms of early indicators of tolerance toward the drought
2011
Mataruga, M., Faculty of Forestry, Banja Luka (Bosnia and Herzegovina) | Isajev, V., Faculty of Forestry, Belgrade (Serbia) | Daničić, V., Faculty of Forestry, Banja Luka (Bosnia and Herzegovina) | Cvjetković, B., Faculty of Forestry, Banja Luka (Bosnia and Herzegovina)
Genetic markers, from morphological to molecular, in function with early indicators of tolerance toward drought, have been an object of research and scientific papers for many years. It starts with the hypothesis that seedlings produced from seeds that were collected from population of extremely different site conditions, on the level of open pollinated families, will have different results concerning drought tolerance. By tracking the dynamics of germination and morphological parameters of saplings, we are researching the interdependence of these parameters with the survival and growth of two-year-old seedlings in conditions where there is a lack of water. Austrian Pine seeds were collected from forty trees, distributed over five provenances on the Balkan Peninsula. Within each provenance a group is assigned to an extremely harsh and dry habitat, while also another group is assigned to prosperous (the most productive) habitat. The analysis of the twenty-one-day-old seedlings (saplings) is performed in the laboratory, while the tolerance test of the two-year-old seedlings is performed in the field. Seedlings that are exposed to conditions in which there is lack of water, have the coefficient of water formation evaluation 22.59 times bigger than sandy-clay soil with fraction of sand bigger than 60 percent. The results show significant and positive correlation between some parameters of saplings and the dynamics of growth (high increments) of the seedlings in drought, but no correlation with the survival of the seedlings.
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