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Wyświetlanie 1-15 z 26
Tytuł:
Pollen morphology of Polish species of genus Rubus - Part I. Rubus gracilis
Autorzy:
Wronska-Pilarek, D
Malinski, T.
Lira, J.
Powiązania:
https://bibliotekanauki.pl/articles/41631.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Rubus
Polish species
pollen morphology
Rubus gracilis
statistical analysis
intraspecific variability
pollen variability
locality
Opis:
Pollen morphology and pollen variability of Rubus gracilis were studied. A total of 260 grains from 13 natural Polish localities were examined. Important characteristics include: a stretched bridge; a visible pore area and endopores; ectocolpi arranged regularly, more or less evenly spaced or, more rarely, joining one another in the apocolpium, long (79.3% length of the polar axis) and narrow; exine sculpture striate, distinct; striae and muri of equal width, rather narrow; striae usually running parallel to the polar axis, sometimes forming semicircles in the apocolpium zone; with distinct perforations. The size, outline and shape turned out to be poor criteria when identifying the species. A statistical analysis of 10 quantitative grain characteristics showed their little variability. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed no differences among the grains from the individual localities, likely the result of apomixis.
Źródło:
Dendrobiology; 2006, 56; 69-77
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of Juniperus communis subsp. communis based on phenolics accumulation and glucosidase activity
Autorzy:
Kozlowska, M
Bednorz, L.
Grzeskowiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/41569.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
juniper
Juniperus communis ssp.communis
variability
needle
berry-like cone
environmental variability
phenolics accumulation
glucosidase activity
enzyme activity
beta-glucosidase activity
morphological variation
Opis:
Four populations of J. communis L. subsp. communis of natural localities in forested regions of the Bory Tucholskie (Poland) were analysed in respect of phenolic compounds concentration and –glucosidase activity. The variability noted in needles was confirmed by adaptation changes; water-logged and poor insolated localities (deciduous mixed fresh forest, dmff – no 3 and coniferous mixed bog forest, cmbf – no 4) stimulated the phenolics accumulation and enzyme activity. On the contrary, the level of phenolics in unripe berry-like cones was almost two fold lower under disadvantageous juniper growth and fructification conditions, whereas the mature berries from poor vigour plants were characterized by higher concentrations of these metabolites. Obtained results show that morphological variation of juniper population was accompanied by variability in phenolic metabolism.
Źródło:
Dendrobiology; 2005, 54; 29-33
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ISSR analysis of chosen Gleditsia accessions obtained from Polish collections
Autorzy:
Smolik, M
Kubus, M.
Powiązania:
https://bibliotekanauki.pl/articles/41549.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
ISSR technique
Gleditsia
Polish collection
genetic variability
fingerprinting
dendrology
Polska
Opis:
Species of Gleditsia show considerable morphological variability that makes them difficult to distinguish using either vegetative or floral characters. Honeylocusts, especially the thornless cultivars, are popular ornamental, shade, street, attractive landscape trees. In this study the ISSR technique was used to evaluate the range of genetic variability between seven genotypes of Gleditsia cultivated in Polish dendrological collections [Gleditsia caspica Desf., Gleditsia japonica Miq., Gleditsia japonica Miq. var. korainensis (= G. korainensis Nakai), Gleditsia triacanthos L., Gleditsia triacanthos L. (bulk), Gleditsia triacanthos f. inermis (L.) Zabel (bulk). Forty ISSR primers were tested and 18 were selected for their ability to produce clear and reproducible patterns of multiple bands.A total of 177 loci of 260-2600 bp were amplified, of which 89 (50%) were polymorphic, 14 (8%) monomorphic and 74 (42%) were accession-specific. Accession-specific ISSR loci were obtained for all of the seven accessions tested. A dendrogram generated using the UPGMA, based on a similarity measure of total character difference, showed that the Gleditsia accessions were clustered into two main groups (‘a’ and ‘b’). The first grup –‘a’– included: Gleditsia triacanthos L., Gleditsia triacanthos L. (bulk) and Gleditsia triacanthos f. inermis (L.) Zabel (similarity 0.61–0.75), the second –‘b’– included 2 species: Gleditsia japonica and Gleditsia japonica var. korainensis (similarity 0.43). Analysis of the phylogenetic similarity dendrogram has shown wide range of diversity between studied accessions. The clustering pattern obtained in our experiment was in agreement with the data based on morphological, allozyme and ITS analysis.
Źródło:
Dendrobiology; 2009, 62; 63-70
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of Pinus uncinata Ramond ex DC as expressed in needle traits
Zmienność igieł Pinus uncinata Ramond ex DC
Autorzy:
Boratynska, K.
Bobowicz, M.A.
Powiązania:
https://bibliotekanauki.pl/articles/41754.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
variability
statistical analysis
pine
morphoanatomy
Spain
Pinus uncinata
needle trait
Opis:
Two-year needles were collected from 42 trees from 5 localities in Spanish Pyrenees. The needles were analysed in respect to 15 morphological and anatomical traits. Data obtained were subject of multivariate statistical analyses. The most stable traits appear to be width of epidermis cells, width and thickness of the needles and ratio of the last two characters. Number of the resin canals and the vascular bundles distance were the most variable characters. The differences among the 42 investigated trees are not evident, considerably small and not significant statistically.
Praca zawiera szczegółową analizę zmienności igieł P. uncinata. Materiał pochodził z 5 różnych naturalnych stanowisk z 42 drzew z hiszpańskich Pirenejów. W badaniach uwzględniono 15 cech morfologicznych i anatomicznych a uzyskane wyniki z pomiarów poddano szczegółowej analizie statystycznej. Ustalono, że zmienność między drzewami w badanej populacji P. uncinata jest stosunkowo niewielka i nie istotna statystycznie. Najbardziej stabilnymi cechami okazały się iloraz grubości i szerokości igły (cecha14), szerokość komórek epidermy (cecha11), szerokość i grubość igły (cechy 7 i 8) a także grubość komórek epidermy (cecha 10) i liczba szparek po obydwu stronach igły (cechy 4 i 5). Współczynniki zmienności dlawspomnia nych cech nie przekraczają 9%. Największe różnice, jednak statystycznie nie istotne, obserwowano w liczbie kanałów żywicznych (cecha 6) i w odległościach między wiązkami (cecha 9) oraz we współczynniku Marceta (cecha12).
Źródło:
Dendrobiology; 2000, 45
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollen morphology of Polish species of the genus Rosa - I. Rosa pendulina
Autorzy:
Wronska-Pilarek, D
Lira, J.
Powiązania:
https://bibliotekanauki.pl/articles/40988.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Rosa
Alpine rose
Rosa pendulina
Polish species
pollen morphology
variability
multivariate analysis
Opis:
The morphology and variability of pollen of Rosa pendulina L. were studied. The material came from 10 native localities of this species. 300 pollen grains were examined. It was established that the diagnostic features of pollen grains of R. pendulina L. were: an elongated, narrow operculum, a poorly developed exine sculpture, long ectocolpi (a low value of the apocolpium index), and the predominance of grains elongated in shape. The results obtained usually correspond to data supplied by other palynologists. A statistical analysis of 10 quantitative grain characteristics showed their variability to be rather low. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed dependences among the grains from the 10 analysed localities
Źródło:
Dendrobiology; 2006, 55; 65-73
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variability of Pinus sylvestris populations from IUFRO 1982 provenance trial
Autorzy:
Androsiuk, P.
Urbaniak, L.
Powiązania:
https://bibliotekanauki.pl/articles/40971.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
genetic variability
Scotch pine
Pinus sylvestris
plant population
molecular marker
provenance trial
Opis:
Provenance trials were designed to analyse the quantitative responses of tree species to environmental variables found in different experiment location. However, we have still limited knowledge how natural and artificial selection affects genetic variation of the species populations gather in such experimental sites. We have used bulked DNA-based RAPD and ISJ analysis to investigate genetic diversity and differentiation of Scots pine populations from two Polish locations of IUFRO 1982 provenance trial placed in Kórnik and in Supraśl. Applied categories of DNA markers differed in terms of revealing genetic diversity of the species. Ten RAPD primers applied in the study yielded a total of 75 bands, of which 21 (28%) and 15 (20%) were polymorphic in Kórnik and in Supraśl, respectively. Six ISJ primers revealed 42 bands of which 4 (9.52%) and 14 (33.3%) were polymorphic in Kórnik and in Supraśl, respectively. The genetic diversity and differentiation was low, as expressed by He=0.071 and He=0.085, and by genetic distance values which ranged from 0.0 to 0.240 (on average 0.081) and from 0.017 to 0.188 (on average 0.094) for Kórnik and Supraśl, respectively. Location of provenance trial appeared to have a significant influence on revealed level of genetic polymorphism and pattern of interpopulation differentiation. However, genetic structure found for analysed Scots pine provenances from IUFRO 1982 in Kórnik was also confirmed for Supraśl experimental site. In the light of available data we also discussed the influence of historical migration routes and gene flow on observed genetic variation of the species.
Źródło:
Dendrobiology; 2014, 71
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The variability of dimensions of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorns in Poland
Autorzy:
Barzdajn, W
Powiązania:
https://bibliotekanauki.pl/articles/41726.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
variability
acorn size
dimension
Polska
acorn
forest tree
Quercus robur
Quercus petraea
Opis:
The paper includes results of measurements of the length and diameter of 12600 acorns of Quercus robur and 5099 acorns of Q. petraea collected in Poland in the mast-year 1993. Acorns of both species were compared. Significant differences in acorn length and diameter/length ratio were found. Acorns of Q. robur are somewhat larger, but both species have a large common area of variability. The scale of this variability has been determined. Geographical correlation of the size of Q. robur acorns was ascertained.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rubus limitaneus (series Mucronati, subgenus Rubus, Rosaceae) - a species new to science from NW Poland
Autorzy:
Malinski, T.
Zielinski, J.
Kosinski, P.
Powiązania:
https://bibliotekanauki.pl/articles/41520.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Rubus limitaneus
Mucronati
Rubus
Rosaceae
new species
flora
taxonomy
variability
ecology
plant distribution
Polska
Opis:
This paper describes, illustrates, and maps a new regional bramble species occurring in the Myśliborskie Lake District in NW Poland. It represents the series Mucronati, which until now has never been recorded in this part of Europe. Locally it is the common plant and usually can be found in pine plantation established on former farmland.
Źródło:
Dendrobiology; 2014, 72
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving seed germination and seedling emergence in the Juniperus communis
Autorzy:
Tylkowski, T
Powiązania:
https://bibliotekanauki.pl/articles/41555.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
juniper
Juniperus communis
seedling emergence
seed germination
seed cone
propagation
individual variability
natural regeneration
Opis:
The observed juniper decline, lack of natural regeneration, and disappearance of numerous populations of the common juniper in Poland, were the major reasons for initiation of research on its sexual propagation and seedling production. This study shows that seed dormancy in this species is broken by warm-cold stratification at 15°C/3°C, for 14+12 weeks, respectively. Seed drying for 72 h at room temperature in the middle of the warm phase (i.e. after 4–8 weeks of stratification at 15°C) and the following cold stratification at 3°C, cause a significant increase in seed germination capacity at cyclically alternating temperatures of 3~15°C, and in seedling emergence in growing trays (67 cells each) in a greenhouse. However, seedling emergence was over 2-fold to 4-fold lower in an open nursery than in the greenhouse. After sowing in the nursery, secondary dormancy was probably induced, because some seeds germinated in the following year. Some very young, 2-year-old seedlings started to produce male or rarely female cones. This study also showed that soil conditions of mother plants can influence the pattern of seed germination and seed ling emergence.
Źródło:
Dendrobiology; 2009, 61; 47-53
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seed variability of the Polish species of the genus Sorbus (Rosaceae)
Autorzy:
Bednorz, L
Walkowiak, R.
Maciejewska-Rutkowska, I.
Molinski, K.
Powiązania:
https://bibliotekanauki.pl/articles/40978.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Polska
Polish species
plant variation
plant taxonomy
statistical analysis
biometry
seed variability
Sorbus
Rosaceae
Opis:
This paper presents the results of the study on morphological differentiation of seeds of five Polish species of the genus Sorbus L. (S. aria (L.) Crantz, S. aucuparia L. Emend. Hedl., S. chamaemespilus (L.) Crantz, S. intermedia (Ehrh.) Pers. and S. torminalis (L.) Crantz). The biometric data of 1980 seeds were subjected to multivariate statistical analysis in attempt to define intraspecific variation and to find differences between studied taxa. Most of the seed traits are significantly correlated and are characterised by moderate level of variation. Seeds of S. aucuparia (both subspecies) are the least variable while seeds of S. torminalis and S. intermedia the most. On the basis of size and shape traits of Sorbus seeds only seeds of S. aucuparia can be definitely distinguished from the others.
Źródło:
Dendrobiology; 2006, 55; 3-9
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of climate variability on Quercus rubra phenotype and spread in Lithuanian forests
Autorzy:
Straigyte, L.
Zalkauskas, R.
Powiązania:
https://bibliotekanauki.pl/articles/41531.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
climate variability
Quercus rubra
phenotype
spread
Lithuania
forest
alien plant
maritime region
seedling
stem
quality
Opis:
This study investigates the effect of climate variability on the phenotype, leaf litter decomposition intensity and seedling spread of alien red oak (Quercus rubra L.). Twenty-eight red oak forest stands located in Lithuania were evaluated. Indirect climate change indicators such as continentality were used in the analysis. Simulation of climate warming was achieved using an agro sheet cover. According to the results, the morphological traits of red oak stems in the maritime regions (warmer winters) do not differ significantly from those of red oaks stems in the continental areas of Lithuania (colder winters, more frequent spring frosts). Red oak leaf litter under an agro sheet cover (warmer conditions) decomposes at almost the same intensity as without the cover (natural conditions). The red oak seedlings spread 100 m or more irrespective of continentality. These results showed indirectly that climate change will not affect red oak stem quality or microorganism activity in the process of leaf litter decomposition. Red oak will thus remain as an invasive species, threatening composition change in native forests.
Źródło:
Dendrobiology; 2012, 67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The morphological traits of cones and seeds of Abies alba in the Middle Sudeten
Autorzy:
Tracz, M
Barzdajn, W.
Powiązania:
https://bibliotekanauki.pl/articles/41449.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
fir
Abies alba
cone
seed
morphological trait
cone variability
Sudetes Mountains
cone size
seed feature
Opis:
Twenty Abies alba trees were selected for restoration purpose of species in the Sudeten. Eleven features of cone and seeds collected from those trees were examined and all of them significantly differed selected trees. Five features, i.e. cone length, cone biggest diameter, length and width of ovuliferous scales, and length of wings with were recommended as having the highest diagnostic value.
Źródło:
Dendrobiology; 2007, 58; 59-65
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic similarity of chosen Syringa species determined by the ISSR-PCR technique
Autorzy:
Rzepka-Plevnes, D
Smolik, M.
Tanska, K.
Powiązania:
https://bibliotekanauki.pl/articles/41611.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Przelewice Dendrological Garden
genetic variability
Syringa
lilac
genetic diversity
taxonomy
ISSR technique
polymerase chain reaction
Opis:
Inter-simple sequence repeat (ISSR) amplification was used to analyze polymorphism of microsatellite sequences in the lilacs genom and to evaluate genetic diversity among seven lilacs species (Syringa × prestoniae McKelvey., S. reflexa K.C. Schneid., S. villosa Vahl, S. × chinensis Willd., S. meyeri K.C.Schneid., S. vulgaris L.and S. reticulata (Blume) var. amurensis (Rupr.)). The plant material was originated from the collection of Dendrological Garden in Przelewice.A total of 30 primers, containing different simple sequence repeat motifs were tested for amplification.Out of the 30 primers only 13 gave interpretable banding patterns in all lilacs species.A total of 182 ISSR fragments were generated with 13 primers of which 109 (60%) were polymorphic and 57 (31.2%) species-specific. ISSR–PCR with genomic DNAs of the showed lilacs yielded DNA fragmets ranging form 2200 to 123 bp in size.Species-specific ISSR fragments were detected for each lilacs accessions.UPGMA cluster analysis was used to construct a dendrogram and to estimate the genetic distances between lilacs species.The ISSR-based phylogeny was generally consistent with Syringa taxonomy based on morphological and phenological evidence.
Źródło:
Dendrobiology; 2006, 56; 61-67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intra- and interindividual variability of selected quantitative features of pollen grain morphology based on the example of Rosa canina L. (Rosaceae)
Autorzy:
Wronska-Pilarek, D.
Jagodzinski, A.M.
Powiązania:
https://bibliotekanauki.pl/articles/41774.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
intraindividual variation
interindividual variability
quantitative feature
pollen grain
morphology
Rosa canina
Rosaceae
palynology
biometric analysis
Opis:
The objective of this study was to investigate the ranges of intra- and interindividual variability on the example of R. canina. For this purpose, four flowers were collected randomly (72 flowers in total)from 18 wild shrubs of R. canina growing in one population in Poznań (Poland)and then, from each flower, 50 correctly formed pollen grains (200 pollen grains per each individual)were selected. Inter- and intraindividual pollen grain variability was characterised based on 3600 pollen grains. They were analysed for seven quantitative features, i.e. length of polar axis (P), equatorial diameter (E), thickness of the exine along the polar axis (Exp), length of ectocolpi (Le) and P/E, Exp/P, and Le/P ratios. Our study revealed highly significant differences among flowers of the particular R. canina individuals with respect to all pollen grain biometrical features. In addition, it showed that the assessment of the full range of variability in pollen grain biometric features within one individual (shrub)was more reliable if we examined several pollen grains from several flowers than for the same number of pollen grains derived from a single flower. We also found statistically significant differences among particular individuals in all pollen grain features. This proves that in order to well characterise a population of a given species from the point of view of palynology, the plant material should derive from a possibly numerous number of individuals (shrubs).
Źródło:
Dendrobiology; 2012, 67
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorn size in the region of the Pomeranian plains
Autorzy:
Major, S
Powiązania:
https://bibliotekanauki.pl/articles/41221.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
variability
Pomeranian region
acorn size
dry mass
acorn length
acorn diameter
Quercus robur
Quercus petraea
oak
Opis:
The results of measurements of 5780 acorns confirm that Quercus robur has acorns of langer size, as componed with acorns of Quercus petraea. Their length varied from 1.90 to 3.50 cm, with the average 2.71 cm, while in case of Q. petraea this characteristic varied from 1.60 to 3.50 cm, with the average 2.43 cm. The diameter of acorns was similar for both species. Dry mass of Q. robur acorns ranged from 1.054 to 4.937 g, on average 2.5924 g; in the case of Q. petraea it ranged from 0.835 to 4.796g, on average 1.8364 g. Taking into consideration the coefficient of variability of length and diameter, both species do not differ significantly. It ranged from 9 to 12%. In the case of dry mass the difference was larger and it was 23% and 28% for Q. robur and Q. petraea, respectively. The analysis of variance (F-test) showed, that the species taken as the source of variability influences significantly the length of acorns (in 17%) and dry mass (in 47%). Internal features determine these characteristics in 52% and 46%. F-test did not detect any dependence between oak species and the diameter of acorns.
Źródło:
Dendrobiology; 2002, 47 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 26

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