Tyrimų pagrindimas. Paprastoji eglė yra svarbi ūkinė rūšis Lietuvoje. Kilmių perkėlimas ir tolesnė selekcija gali ženkliai padidinti genetinę naudą gautiną iš p . eglės ūkinės paskirties medynų. Tuo tikslu, reikia informacijos apie genetinius skirtumus ir jų kitimo dėsningumus tarp p. eglės populiacijų perspektyviame introdukcijai Baltijos regione. Tyrimo tikslas- palyginti paprastosios eglės Baltijos regiono kilmių palikuonių adaptacinių, stiebo kokybės ir gyvybingumo požymių geografinio kintamumo dėsningumus bei kilmių perkėlimo ūkinę naudą bandomuosiuose želdiniuose. Objektas – 2001 m. įveisti paprastosios eglės Baltijos regiono kilmių palikuonių bandomieji želdiniai Kazlų Rūdos MMU (85 kilmės, po 50 kiekvienos kilmės medelių). Metodai – tyrimo metu buvo įvertintas medelių aukštis ir stiebo kokybė, nustatyta pumpurų sprogimo klasė, bei atlikta šių duomenų statistinė analizė. Rezultatai. Iš pietų į šiaurę perkeltų kilmių medeliai buvo aukštesni, geresnės stiebo kokybės ir vėliau pradėjo sezoninį augimą nei šiaurinių kilmių medeliai. Ypač mažu produktyvumu ir prasta stiebo kokybe pasižymėjo šiauriausios šiame bandyme pietų Suomijos kilmės, o šiaurinės Lenkijos kilmių medeliai produktyvumu lenkė vietinės kilmės medelius. Tai paaiškintina santykinai stipresniais šalnų pakenkimais, dėl ankstyvesnės šiauresnių kilmių sezoninio augimo pradžios ir mažesniu medeliu aukščiu dėl santykinai ankstesnės augimo pabaigos. Minėtų požymių geografinis kintamumas yra palaipsniui... [toliau žr. visą tekstą] / Background. Norway spruce is an imprint commercial forest tree specie sin Lithuanian. Provenance transfer and further breeding may markedly rise the benefit from commercial forests of Norway spruce,. For this purpose, there is a need of information on genetic variation and its geographical patters among Norway spruce provenances within the Baltic sea region of interest for introduction to Lithuania an don the benefit of the transfer itself. Objectives of the study are to compare the patterns of geographical variation among Baltic Norway spruce provenances in adaptive traits and to assess benefit of provenance transfer in the experimental plantation. The test. The study was carried out in an experimental plantation of Baltic Norway spruce provenances established in 2001 in Kazlu Ruda MMU (85 provenances of 50 trees each). Methods. Height, stem quality and stage of budburst in spring of the provenances were measured in the experimental plantation and statistical analysis methods were used to present the data. The results. The results showed that trees of the southern provenances were taller of better stem quality and later growth start in spring than trees of northern provenances. Trees of the most northern in this trial Finnish and Swedish provenances performed extremely poorly. Northern Polish provenances were more productive than the tree of the local origin. This result may be a consequence of spring frost damage of early flushing trees. The trees of northern... [to full text]

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]