Response of Picea abies (L.) Karst. Provenances to sulphur dioxide and aluminum: A pilot study
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Seedlings of six Picea abies provenances were exposed to Al, SO2 and A1+SO2 for 12 weeks. A molaric Ca/Al ratio of 0.05 was chosen by using 1.68 mM Al. On the average, concentration of SO2 was 335 μg m−3. Shoot and root growth were measured and needle discoloration was scored for different pollution regimes. Plant response to different environmental stresses differed significantly among the provenances used and showed marked provenance x treatment interactions. It is noteworthy that the high intraspecific variation of the traits investigated could cause misleading conclusions in nongenetic studies if inappropriate plant material is employed.
KeywordsOzone Root Growth Sulphur Dioxide Shoot Growth Forest Tree Species
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