Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "tree population" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 21
Tytuł:
Effects of climatic conditions on annual tree ring growth of the Platanus x hispanica "Acerifolia" under urban conditions of Szczecin
Autorzy:
Cedro, A
Nowak, G.
Powiązania:
https://bibliotekanauki.pl/articles/41154.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Szczecin city
Zeromski Park
London planetree
tree population
Platanus x hispanica
urban condition
climate condition
tree ring width
annual tree ring growth
Opis:
Szczecin harbours Poland’s largest London plane tree population. The London plane trees growing in Szczecin’s Żeromski Park were subjected to dendroclimatological research (analyses of signature years and response function). The study was based on a composite site chronology, signed ZER, spanning 105 years (1900–2004); the mean annual tree ring growth was 2.59 mm. Precipitation, particularly that in late winter- early spring and in the summer months was found to be a factor decisive for the tree’s cambial activity. A high sum of precipitation during the periods mentioned induced positive growth responses in the trees. Thermal conditions during the growth period proved to be another factor controlling the annual tree ring growth, as shown by linear relationships. The tree ring growth-climate relationships in the population under study as well as the between-parks differences in the London plane tree response can be explained by differences in habitat conditions. The trees under study grow in the vicinity of a busy, frequently repaired street and are surrounded by pavement and/or hardened road surface, which greatly limits the infiltration of moisture supplied by precipitation.
Źródło:
Dendrobiology; 2006, 55; 11-17
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variation in sex expression in Polish and Ukrainian populations of Taxus baccata L.
Autorzy:
Iszkulo, G
Jasinska, A.K.
Powiązania:
https://bibliotekanauki.pl/articles/41564.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
tree
yew
Taxus baccata
Polish population
Ukrainian population
sex expression
monoecious species
dioecious species
sex evolution
gymnosperm
Opis:
The aim of the present study was to analyse the occurrence of monoecious individuals in selected populations of Taxus baccata in Poland and Ukraine. The investigation showed the monoecy in Taxus baccata to be extremely rare phenomenon. Only four cosexual individuals were found in three by seven populations examines and the frequency of monoecy was 0.13% on average among 2986 trees verified. Isolated seeds were found on individuals with large number of male flowers. Only one tree was found with numerous macro- and microstrobiles.
Źródło:
Dendrobiology; 2004, 52; 29-32
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka populacji bozodrzewu gruczolkowatego [Ailanthus altissima [Mill.] Swingle] we Wroclawiu
Autorzy:
Babelewski, P
Powiązania:
https://bibliotekanauki.pl/articles/799114.pdf
Data publikacji:
2006
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
miasta
Ailanthus altissima
populacje roslin
drzewa
bozodrzew gruczolkowaty
Wroclaw
city
plant population
tree
tree-of-heaven
Wroclaw city
Opis:
Wrocławska populacja bożodrzewu prawdopodobnie jest najliczniejszą w Polsce. Dlatego podjęto kompleksowe badania tego taksonu w ekosystemie miejskim Wrocławia. W niniejszej pracy przedstawiono strukturę i liczebność populacji oraz różnice w zmienności osobniczej drzew, obliczonej na podstawie pomiaru powierzchni fotosyntetycznej liści u pojedynczych drzew rosnących na 30 stanowiskach. W latach 1998-2001 we Wrocławiu zlokalizowano 647 stanowisk, na których rosło 2025 drzew, z czego 699 było płci żeńskiej, 805 płci męskiej i 25 obupłciowych. W fazie intensywnego wzrostu wegetatywnego (młodocianego) zanotowano 496 drzew. Z całej populacji drzew bożodrzewu we Wrocławiu 76%, tj. 1536 okazów, stanowiły drzewa wyrosłe spontanicznie. Drzewa żeńskie stanowiły 34,5% - 699 okazów, wybarwiały one owoce na żółtoczerwono, żółto i czerwono. Drzewa bożodrzewu wg obwodu podzielono na siedem grup. Najliczniejszą grupą były drzewa o obwodzie od 50,1 do 100 cm, w której było 762 drzewa. Drzew o obwodzie powyżej 300,1 cm (grupa 7) było 4. Największa powierzchnia fotosyntetyczna liści wynosiła 538,19 cm², a najmniejsza 160,73 cm². Przedstawione wyniki wykazały, że bożodrzew gruczołowaty okazał się drzewem dobrze znoszącym warunki miejskie Wrocławia. Ze względu na szybki wzrost, zdolność przystosowawczą i dużą zdrowotność powinien mieć zastosowanie w dużych aglomeracjach miejskich.
Wrocław population of ailanthus is probably the most numerous in Poland. Therefore, examinations of this taxon in urban ecosystem of Wrocław was undertaken. The work in aimed at presenting the structure and size of tree of heaven populations, as well as the differences among population of the trees. The latter one was done on the basis of the measurements involving photosynthetic leaf surface of trees growing in 30 locations. In the years 1998-2001 647 localizations with 2025 trees in Wrocław were determined. Out of this number 669 were female, 805 male and 25 hermaphrodite trees comprised. Female trees comprised 34.5% of the whole number of trees. They bear fruits of yellow-red, yellow and red colour. 496 (76%) were in the phase of intensive vegetative (juvenile) growth. Out of the whole tree of heaven populations in Wroclaw 76% i.e. 1536 individuals were trees which were growing spontaneously. Heaven trees were also classified to seven groups according to their trunk circumference. The most numerous group included trees of the circumference ranging from 50.1 to 100 cm which contained of 762 trees. There were 4 trees of the circumference exceeding 300.1 cm (group 7). The largest photosynthetic leaf surface amounted to 538.19 cm², while the smallest one equaled 160.73 cm².
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 2006, 510, 1; 57-64
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The population structure and regeneration of Sorbus torminalis in Hadecka planinka National Nature Reserve (Czech Republic)
Autorzy:
Madera, P.
Kohoutek, M.
Senfeldr, M.
Repka, R.
Powiązania:
https://bibliotekanauki.pl/articles/41463.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
population structure
regeneration
Sorbus torminalis
wild service tree
age structure
forest system
species protection
chequer tree zob.wild service tree
checker tree zob.wild service tree
Hadecka Planinka National Nature Reserve
Czech Republic
Opis:
We performed a detailed overall field survey of all specimens of the wild service tree Sorbus torminalis (L.) Crantz in the research area in the Hádecká planinka National Nature Reserve. This research area, with an area of 80 ha, contains one of the largest populations of the tree in Europe. In all, 1713 specimens were found. This study provides a detailed description of the wild service tree population in the area. The basic biometric parameters (height, GBH, social position, fertility) of thepopulation were assessed. The main emphasis of our analysis was to evaluate the population's age structure. We used estimates of age structure based on the Chapman-Richards growth function to perform this evaluation. During the past twenty years, the natural regeneration of the wild service tree in the nature reserve has decreased considerably. At an experimental plot where a high forest was converted to a coppice with standards, regeneration occurred over 75% of the area. Root suckers were found at the beginning of the observation period. After 2–3 years, generative regeneration occurred.
Źródło:
Dendrobiology; 2012, 68
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dendrochronological studies of Juniperus communis dying out population in the "Jalowce" reserve (Pomerania)
Autorzy:
Cedro, A
Wrobel, M.
Jurzyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/41065.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dendrochronology
juniper
Juniperus communis
population
meteorological condition
tree ring width
Jalowce reserve
Pomeranian region
Polska
forest nature reserve
plant age
tree
Opis:
The aim of undertaken research was recognition the reasons of dying out the common juniper Juniperus communis L. ssp. communis population in the forest nature reserve “Jałowce” (Pomerania). Applied methods of dendrochronological analysis let to determine the age of juniper-stand in the reserve and describe the influence of climatic conditions on its growth. Obtained results testify to Juniperus communis chronology with signature WIE collected from 17 individual sequences which numbered 102 tree ring width and represented a time span 1903 to 2004. Such results described the juniper-stand in the reserve as ageing population with the oldest specimen at age 98 years. However, the last several years were characterised by the lack of strong growth depressions typical for earlier time periods with tree ring width ranged 0.7–1.0 mm (themean annual tree ring width amounted to 0.85 mm), but the visible symptoms of degeneration and dying out of protected common juniper population intensified probably because of its age.
Źródło:
Dendrobiology; 2007, 58; 17-23
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphological variability of leaves of Sorbus domestica L. in Croatia
Autorzy:
Poljak, I.
Kajba, D.
Ljubic, I.
Idzojtic, M.
Powiązania:
https://bibliotekanauki.pl/articles/57486.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
service tree
morphological variability
leaf
morphology
Sorbus domestica
population variability
geographic differentiation
ecological differentiation
Croatia
Opis:
The paper studies the morphological variability of the service tree populations in the continental and Mediterranean regions of Croatia. The inter- and intra-population variability, as well as eco-geographic population differentiation, was established on the basis of eight measured morphological characteristics of two types of leaflets (lateral and terminal) and two derived ratios, using descriptive and multivariate statistical methods. The conducted research established a high variability of morphological characteristics. In comparison with lateral leaflets, terminal leaflets showed a higher degree of variability for the majority of the studied variables. The differences between the trees within populations, as well as the differences between populations, were confirmed for all studied characteristics. The study also confirmed a trend of population variations according to the eco-geographic principle. Populations from climatically different and geographically distant habitats, in other words from the Mediterranean and the continental region, differed in the majority of studied characteristics. In addition to the established pattern of ecotypical variability between the continental and the Mediterranean regions, the clinal variability with regard to altitude and mean annual temperature was also confirmed. Small, although statistically significant clinal variability with regard to the longitude was recorded for two measured characteristics. The conducted study provided insights into the variability of the service tree populations in Croatia, which is a basis for further research that should be implemented in order to produce guidelines for the breeding and conservation of genetic resources of this rare and endangered noble hardwood species.
Źródło:
Acta Societatis Botanicorum Poloniae; 2015, 84, 2
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Importance of investigations carried out by Professor Bolesław Suszka in population genetics of forest trees
Autorzy:
Sabor, J
Powiązania:
https://bibliotekanauki.pl/articles/41481.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
selection programme
forestry
gene bank
selection breeding
forest nursery
plant genetics
Suszka Boleslaw
forest tree
population genetics
Opis:
Modern forest selection programs concern natural and protected populations of trees characterized by a great genetic variability and also production stands frequently deformed by human activity. In the latter, artificial regeneration is prevailing. Forest nurseries working in the organizational structures of State Forests can guarantee the proper provenance (genotype)of seeds and the quality of seedlings obtained from them. The condition, however, is a close uniformity in the conservation of forest gene resources, and selection breeding of forest trees. The success of the program depends also on the development of modern infrastructure for forest nurseries and applied technologies. The latter task was the field of activity of Professor Bolesław Suszka, Ph.D., and his many-year research and organizational and didactic activity in Poland and abroad. The methods in long-term storage and their pretreatment in case of dormant seeds, developed by Professor Suszka, created the theoretical and practical basis for the conservation of forest gene resources not only in Poland.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential for genetic conversion of Norway spruce Picea abies (L.) Karst. stands and methods for preserving gene resources of Istebna race in Silesian Beskid Mts
Autorzy:
Sabor, J
Powiązania:
https://bibliotekanauki.pl/articles/41439.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Silesian Beskids Mountains
Norway spruce
forest tree
Picea abies
genetic conversion
genetic value
silvicultural value
species composition
regeneration
forest site type
tree stand
population genetics
Opis:
The forests of the Silesian Beskid Mts have a specific composition with a marked dominance of Norway spruce. Although spruce stands are seriously threatened, some of them, such as those of Istebna race, show excellent genetic value. The work stresses the need for the conversion of spruce stands in the Silesian Beskid range on the basis of population genetics and describes the principles of such conversion.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence of Panaphis juglandis [Goetze] and Chromaphis juglandicola [Kalt.] on walnut under the urban conditions of Lublin
Występowanie Panaphis juglandis (Goetze) i Chromaphis juglandicola (Kalt.) na orzechu włoskim w warunkach miejskich Lublina
Autorzy:
Jaśkiewicz, B.
Kmieć, K.
Powiązania:
https://bibliotekanauki.pl/articles/11541660.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
urban condition
Juglans regia
walnut
Lublin city
weather
tree
park
street
Chromaphis juglandicola
population dynamics
Panaphis juglandis
aphid
occurrence
Opis:
In the years 2003–2005 studies were conducted in the area of Lublin the aim of which was to study the population dynamics of aphids colonizing the trees of Juglans regia L. in the street and the park sites against the course of weather conditions. The weather in spring probably had no effect on the date of hatching of the larva of fundatrix, which was usually observed in the third 10-days’ period of May. On the other hand, the dry period, heat waves (above 30°C) and stormy rainfalls affected the break in the aphid population observed in July and August. The maximum population of P. juglandis was found in the second 10-days’ period of June, while that of Ch. juglandicola – at he turn of June and July. The highest number of P. juglandis was observed in 2004, while that of Ch. juglandicola in 2003. In 2003 the dominating species in both sites was Ch. juglandicola, while in the other years of studies it was P. juglandis.
W latach 2003–2005 na terenie Lublina prowadzono badania, których celem było prześledzenie dynamiki liczebności mszyc zasiedlających drzewa Juglans regia L. na stanowisku przyulicznym i parkowym na tle przebiegu warunków pogodowych. Układ pogody wiosną prawdopodobnie nie miał wpływu na termin wylęgu larw założycielek rodów, który notowano zazwyczaj w III dekadzie maja. W istotny sposób natomiast na załamywanie się liczebności mszyc, obserwowanej w lipcu i sierpniu, wpływała susza, upały (powyżej 30°C) oraz opady typu burzowego. Maksimum liczebności P. juglandis notowano w II dekadzie czerwca, natomiast Ch. juglandicola na przełomie czerwca i lipca. Najwyższą liczebność P. juglandis odnotowano w roku 2004, a Ch. juglandicola w roku 2003. Gatunkiem dominującym na obydwu stanowiskach w roku 2003 był Ch. juglandicola, natomiast w pozostałych latach badań P. juglandis.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2007, 06, 3; 15-26
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of grapevine resistance to downy and powdery mildew in ‘Regent’ × ‘Bogazkere’ hybrid population segregating for resistance genes
Autorzy:
Shidfar, M.
Akkurt, M.
Atak, A.
Ergül, A.
Söylemezoğlu, G.
Powiązania:
https://bibliotekanauki.pl/articles/12621161.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
grape-vine
Vitis vinifera
fruit tree
plant cultivar
Bogazkere cultivar
Regent cultivar
plant hybrid
hybrid population
resistance gene
Opis:
Fruit production should be adapted to future scenarios that are frequently associated with scarce resources, especially freshwater and fertilizers. New biologically-based fruit production strategies, i.e. taking into account tree growth and water status, are required to optimize irrigation and fertilization under abiotic stress conditions. It was hypothesized that a moderate abiotic stress, here deficit irrigation with or without nitrogen deficit, in the preharvest period, could decrease postharvest losses due to diseases and pruning weights due to reduced vegetative growth, without sacrificing the yield and fruit quality. This study was conducted over two years using the same trees of ‘Moncante’ nectarine cultivar grown in a commercial orchard. Trees were assigned to three treatments: (1) full irrigation at 80% estimated crop evapotranspiration (ETc), (2) deficit irrigation, i.e. at 75% of full irrigation, and (3) deficit irrigation and deficit nitrogen, i.e. at 75% of full irrigation and 75% of usual N-fertilization adopted by the grower in this commercial orchard. Deficit irrigation alone and in combination with deficit nitrogen reduced postharvest diseases and pruning weights without significant yield losses. Our results suggest that ETc-based approaches of reduced water irrigation may be a sustainable way to decrease phytosanitary inputs and workload in the orchard while maintaining the orchard performance.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 1; 181-188
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stand structure and natural regeneration of Taxus baccata at "Stiwollgraben" in Austria
Autorzy:
Dhar, A
Ruprecht, H.
Klumpp, R.
Vacik, H.
Powiązania:
https://bibliotekanauki.pl/articles/41025.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
English yew
Taxus baccata
yew
tree species
Austria
gene conservation
natural regeneration forest
stand structure
population structure
vitality
yew decline
Opis:
English yew (Taxus baccata L.) is a rare tree species in Austria and gene conservation forests reserves are used to maintain English yew populations by silvicultural treatments. This paper describes the current situation of an English yew population at “Stiwollgraben”in Austria with regard to stand structure, vitality and natural regeneration. The area is one of the most important sites in Austria as it consists of 2236 yews.The vitality condition of the yew is very good, and more than 79% of the yews have been assessed as very vital to vital. The potentiality for natural regeneration (13019 one-year seedlings ha–1) is very high, but not all height classes are represented. This indicates a high survival ability of English yew at this site. Three different treatment strategies are described to maintain the yew population. The future effects of these treatments are discussed in the light of the environmental requirements of English yew.
Źródło:
Dendrobiology; 2006, 56; 19-26
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The reproductive capacity of spider mites (Acari: Tetranychidae) population in single and multi-leader apple tree crowns of Elstar and Jonagold cvs
Rozrodczość populacji przędziorków (Acari: Tetranychidae) w jedno- i wieloprzewodnikowych koronach jabłoni Elstar i Jonagold
Autorzy:
Sosna, I.
Kelm, M.
Lenort, M.
Kadłubiec, W.
Powiązania:
https://bibliotekanauki.pl/articles/11542841.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
reproductive capacity
spider mite
Acari
Tetranychidae
population
multi-leader training system
single-leader training system
apple tree
crown
Elstar cultivar
Jonagold cultivar
pest density
Malus domestica
tree architecture
Panonychus ulmi
Tetranychus urticae
Opis:
The present study aimed at finding techniques alternative to chemical control, capable of reducing spider mite density. The experiment was carried out in 7 single-leader and 3 multi-leader training systems. The pest density was compared across the systems and between apple cultivars Elstar and Jonagold showing variable crown densities and trichome cover of leaves. The spider mite mobile stages were more abundant in singleleaders crowns, whereas more eggs were laid in multi-leader crowns. Nevertheless, the egg and the youngest stages survival was reduced in multi-leader crowns probably by the more intensive solar radiation reducing the air RH. The lowest pest abundance was found in the crowns of the V-Gćttingen system, and in the similar, stretched Tatura trellis 2-leader system. These types of crowns should be therefore recommended for integrated and organic apple production.
Integrowana produkcja owoców wskazuje na potrzebę ograniczeń stosowania pestycydów. Celem badań było poszukiwanie alternatywnych technik redukujących liczebność szkodliwych roztoczy w 7 systemach jabłoni o koronach jednoprzewodnikowych i 3 wielo-przewodnikowych. Porównywano także liczebność przędziorków na odmianach Elstar i Jonagold, różniących się zwartością koron i omszeniem liści. W rozpinanych koronach wielo-przewodnikowym przędziorki składały więcej jaj, jednakże stadia ruchome przędziorków były liczniejsze w koronach jednoprzewodnikowych. Przypuszczalnie w koronach rozpinanych, dzięki lepszemu naświetleniu i obniżeniu wilgotności, liczebność przędziorków była silnie redukowana. W koronach jednoprzewodnikowych najmniejszą ilość przędziorków stwierdzono w typie V-Gćttingen, a wielo-przewodnikowych w koronie Tatura trellis (2 przewodniki), wobec czego te formy koron powinny być szczególnie polecane do integrowanej i ekologicznej produkcji owoców.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 5; 25-38
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gene conservation and breeding programmes for Picea abies in Lithuania: present-day achievements
Autorzy:
Danusevicius, J
Gabrilavicius, R.
Danusevicius, D.
Powiązania:
https://bibliotekanauki.pl/articles/41718.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
breeding programme
Lithuania
gene conservation
genetic resource
provenance
plant population
Opis:
At present, Norway spruce stands occupy 22% of the total forest area in Lithuania. Most of them are located in the northeastern highland (Žemaitija) and the central part of the country. 25% of the spruce-dominated stands are pure, the rest are mixed. Natural calamities like storms, droughts, and pests cause substantial damage and occur quite frequently. About 40 thousand ha of stands are cut after each storm. The mean wood yield of the spruce stands is 304 m3 ha-1, and the current annual increment is 6.2 m3 ha-1. The climatic conditions of Lithuania are variable enough to cause differentiation of habitats. For Norway spruce, 6 provenance regions have been established. The national gene conservation programme is based on (a) in situ genetic reserves, seed collection stands, and selected genotypes, and (b) ex situ clonal archives, seed orchards, experimental plantations, and gene bank collections. The present-day breeding of Norway spruce comprises family tests of populations for individual and population selection, and plans for inter-population hybrids. A strategy for Norway spruce breeding has been approved for the years 2004-2013. There is a genetically diverse material for future breeding: long-distance provenance tests, and population and family tests. Assessments of two provenance tests (aged 9 and 17 years) in central Lithuania revealed superior performance of central and northeastern Polish provenances: superior height, good stem quality, and late bud-burst in spring. This may be attributed to the favourable effect of transfer: avoidance of spring frosts (late bud-burst and good stem quality), and utilisation of the later part of the growing period for growth (late bud-set and superior height). Norway spruce is a climax species with different domestic and Darwinian fitness. Therefore, we suggest that the domestic fitness of local genotypes may be improved by introducing a few Polish clones in Lithuanian breeding populations.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic structure of Picea abies populations growing on extreme sites as revealed by isoenzyme markers: a case study from Slovenia and Bosnia and Herzegovina
Autorzy:
Ballian, D
Bogunic, F.
Bozic, G.
Powiązania:
https://bibliotekanauki.pl/articles/41007.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
plant population
genetic structure
extreme site
isoenzyme marker
genetic variation
gene polymorphism
forest tree
Slovenia
Bosnia and Herzegovina
forest community
Sphagno-Piceetum community
Opis:
Three populations of Norway spruce from ecologically extreme environments in Slovenia and Bosnia and Herzegovina were examined for genetic polymorphism. The spruces there grow in specific forest communities (Sphagno-Piceetum) which represent the remnants of the post-glacial vegetation. The aim of the study was to search for similarities in the genetic variation among populations adapted to such conditions. In total, 10 isoenzyme systems involving 16 gene loci were analysed. The results showed differences in genetic differentiation at loci Got-B, Skdh-A and 6-Pgdh-C between the two Slovenian populations and the Bosnian population, but also indicated an interestingly close relationship between the Slovenian population Pohorje and the Bosnian population Nišići.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mitochondrial and nuclear DNA differentiation of Picea abies populations in Poland
Autorzy:
Nowakowska, J A
Powiązania:
https://bibliotekanauki.pl/articles/40976.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
international conference
Europe
forest ecosystem
plant breeding
tree
Norway spruce
Picea abies
Polska
mitochondrial DNA
nuclear DNA
plant population
microsatellite marker
post-glacial migration
Opis:
The natural stands of Norway spruce in Poland are split between the southern and the northeastern parts of the country. Two so-called "spruceless" zones separate the northern spruce locations from those in the south, one "spruceless" zone is situated in Central Poland, and the other one in the Beskid Mts. Mitochondrial (STS) and nuclear (SSR) markers were used to perform the genetic identification of Norway spruce. Four different variants of haplotypes, "a", "b", "c" and "d", were found to occur in the nad1 locus of STS markers. Populations from the northern range of Picea abies distribution in Poland harboured exclusively haplotypes "c" and "d", except for the Białowieża population which had haplotypes "a" and "c". Populations from the "spruceless" zones contained four types of haplotypes whilst those from southern Poland were mostly composed of haplotype "a". High mean gene diversity was observed for both STS and SSR markers (HT = 0.529, and HT = 0.851, respectively). The total genetic differentiation of Norway spruce populations was very low (FST= 0.088). Two main groups of populations were distinguished in the dendrogram defined by Nei's genetic distances based on microsatellite markers. The distribution of the genotypes was scattered and did not show any connection with the spatial distribution of P. abies in Poland. Only the mtDNA markers were able to differentiate the northern populations of Norway spruce from the southern ones, proving the historical separation between the Baltico-Nordic and the Hercyno-Carpathian ranges of P. abies in Poland. By contrast, the microsatellite data suggested an overlap between the genotypes due to the human manipulation of Norway spruce stands in the past.
Źródło:
Dendrobiology; 2009, 61 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
  • odwiedzone
Wyświetlanie 1-15 z 21

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies