The purpose of the study was to evaluate the wood yield and stem quality of (Norway Spruce (Picea abies) provenances from Jurbarkas, Telšiai, Kaunas and Alytus and to assess the transfer effect. to Kaunas region. The problem was the following: incase of shortage of Norway spruce seeds in the local Dubrava forest enterprise, from where it would be profitable to introduce seeds? The object of the study: experimental plantation of Norway spruce in Vaišvydava forest district of Dubrava experimental forest enterprise established in 1995. Trees of four provenances are tested: Jurbarkas, Telšiai, Vaišvydava and Alytus. The total area of experimental plantation is 1.2 hectares. The work methods and technical means: the age of young trees was 11 years at the time of measurements. The following characteristics were measured: height young trees, the number of leader shoots, the straightness of stem, time of budburst (the beginning of the growth period). The height of trees was measured with telescopic measurement instrument; qualitative traits were evaluated according to the class scales used in the genetic research. The results were the following: It was established that the descendants of the provenance of Mociškiai were the tallest and of the best stem quality. The descendants of the provenance of Punia were in the second place by wood yield and quality. This advantage can be explained by good genetic quality of the tested material and the positive effect of transfer. The descendants... [to full text]

Objective of the study is to assess wood yield and quality of Polish Norway spruce provenances and transfer effect in comparison with the local provenances. Object of the study is experimental plantation established in Kazlų Rūda EFE, Agurkiškės forest district (62 comp.., 43 plot). Six southern Polish proveniences were from Istebna, Ustron, Ujstoly ir Lagow forest districts and three open-pollinated families from Girionys seed orchard and progeny from the local Agurkiškės forest district were tested. Area of the experimental plantations 1,8 ha. Methods: quantitative and qualitative traits of the trees in the plantation were assessed by using the following tools and methods: height was measured with a telescopic pole, diameter with calipers and the quantitative traits were assessed by the standard methods used in genetics and breeding. Results: this study showed that growth rate and wood yield of the southern provenances were higher than of the progenies of the selected plus trees of Lithuanian origin. However, wood yield of soother Polish provenances was significantly higher than that of the local regular stands of Agurkiškių provenance. This indicates, that the seed orchard material is superior over the material form regular unimproved forests stands. This difference may be caused not only by the geographical transfer effect but also related to genetic quality of the original stands. Polish provinces possessed a lower number of forked trees but their stems were less... [to full text]