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    Wyświetlanie 1-9 z 9
    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:
    Morphological and anatomical differentiation in peripheral Pinus sylvestris L. populations from the Carpathian region
    Autorzy:
    Köbölkuti, Zoltán A.
    Tóth, Endre G.
    Ladányi, Márta
    Höhn, Mária
    Powiązania:
    https://bibliotekanauki.pl/articles/957051.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    adaptation
    cone morphology
    geographic differentiation
    needle anatomy
    Opis:
    Carpathian Scots pine populations having peripheral distribution within the species’ range are often sustained in specific types of habitats, such as peat bogs and rocky surfaces or lime consisting sandy substrates. Due to their long time adaptive processes, which involve genotypes that can be preadapted to a given selection pressure, historically isolated populations are subjects of particular interest in studies of in situ adaptation. In this study we focus on detecting the level of phenotypic differentiation based on cone morphology and needle anatomy in marginal populations of Pinus sylvestris L. in the Pannonian Basin and the Carpathian Mountains. Six cone morphological and eight needle anatomical characters were measured and four cone morphological and four needle anatomical ratios were calculated. Our results in concordance with paleobotanical data indicate a common origin of the populations from the Northern Carpathians and the Pannonian Basin. High levels of variation were observed in cone morphology. Discriminant function analysis based on the eight cone characteristics revealed clearly discernible groups of populations and indicated significant differentiation among populations growing in peat bogs and on rocky substrates. Significant differences among populations from different habitats were also revealed by comparing needle anatomical variables. The phenotypic differentiation by habitat type based on the measured characters might be evaluated as a sign of local adaptation with detectable phenotypic patterns.
    Źródło:
    Dendrobiology; 2017, 77; 105-117
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology of strobili at different development positions and cone and seed characteristics of Pinus densiflora f. multicaulis
    Autorzy:
    Kwon, S.H.
    Kim, Y.G.
    Kang, H.I.
    Shim, D.
    Kang, K.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078259.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    bisexual strobili
    sex reversal
    microsporangia
    megasporangia
    cone analysis
    Opis:
    Pinus densiflora f. multicaulis is a rare and unusual form of genus Pinus. It has excellent ornamen- tal values due to many trunks from its root collar, and produces female, male, and bisexual strobili on the same tree. However, there is limited study whether the bisexual strobili are functional, mature lateral cones produce filled seeds, and the seeds from the mature lateral cones germinate and grow as well as those from mature apical cones. The structure of apical female, and lateral male and bisexual strobili were analyzed in an open-pollination-progeny population. The strobili were photographed to obtain external, cross-section, and radial-section images using a 45× stereoscopic microscope. Radial sections of strobili were imaged using scanning electron microscopy. Characteristics of apical and lateral cones and seeds were surveyed by cone analysis and germination test. P. densiflora f. multicaulis developed typical female strobili apically, and ordinary male and bisexual strobili laterally. Additionally, female strobili developed laterally whereas the male strobili were normally located. The mature lateral female strobili had the same structure as the apical female. In the mature bisexual strobili, the proportion of male and female tissue was unequal. The cones developed from lateral female strobili showed highly significant differences in the length, width, and weight, being shorter (32.7%), narrower (26.9%), and lighter (59.8%) than those from apical female strobili. Both types produced filled seeds and seedlings, and well significant positive correlations were found among characteristics of seeds from apical and lateral female strobili. The initial seed germination rate of the seeds from apical female strobili was higher than that of seeds from lateral female strobili, but the difference decreased over time. The viability and spatial distribution of the female and male tissue of bisporangiate cones, and their frequent occurrence suggests a common mechanism for the production of bisporangiate structures in seed plants.
    Źródło:
    Dendrobiology; 2021, 85; 51-59
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flowering and cone bearing of Picea abies grafts in second-generation seed orchards
    Autorzy:
    Misiorny, A
    Chalupka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/41542.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Norway spruce
    Picea abies
    cone yield
    seed production
    flowering
    seed orchard
    Opis:
    In 2004, abundant flowering of Norway spruce (Picea abies (L.) Karst.) was observed in two second- generation seed orchards: (1) ‘Outbreeding’, promoting crossing between clones of five geographically distant populations; and (2) ‘Kolonowskie’, restoring a population whose offspring exists only in an international experiment (IUFRO 1964/1968). In bothseed orchards, female strobili were produced by 91.3% and 91.7% of clones, represented by 64.1% and 55.5% of grafts, respectively, and statistically significant differences between clones were found in the number of mature cones. In the case of the seed orchard ‘Outbreeding’, the number of mature cones in individual clones was significantly correlated with latitude of the origin of maternal populations (r = 0.8826, p = 0.0470). The majority (95%) of cones in seed orchards ‘Outbreeding’ and ‘Kolonowskie’ were produced by only 28.2% and 38.5% of all clones, and 21.4% and 25.7% of all grafts, respectively. These data attest to a disparity between the level of genetic diversity in seed orchard progeny resulting from the observed numbers of cone-bearing clones and grafts and the genetic diversity expected from the actual participation of clones and grafts in seed orchard composition. The estimated seed production per 1 ha of seed orchard area in 2004 reached 21.05 kg for ‘Outbreeding’ and 21.72 kg for ‘Kolonowskie’.
    Źródło:
    Dendrobiology; 2006, 56; 51-59
    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:
    Effect of polluted environment on the female and male strobili bearing of European Scots pine provenances
    Autorzy:
    Chalupka, W.
    Rozkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41518.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Scotch pine
    pollen
    male flower
    polluted environment
    provenance
    Pinus sylvestris
    male
    female cone
    female
    Opis:
    Studies on female and male strobili production as well as on pollen production and viability were performed at a polluted (Luboń) and a control (Kórnik) sites. Female strobili bearing per tree and total length of male strobili produced per tree were significantly higher in Luboń than in Kórnik and the stand density and tree crown exposition to sunlight were likely responsible for that result. Percentage of pollen germination was not affected by any variables studied. Neither provenance nor provenance x site interactions were found.
    Źródło:
    Dendrobiology; 2000, 45
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability of Pinus uliginosa cones from the peat-bog in Węgliniec
    Autorzy:
    Marcysiak, K
    Boratynska, K.
    Mazur, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41639.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    variability
    cone
    Wegliniec
    statistical analysis
    Torfowisko pod Weglincem Reserve
    pine
    Polska
    morphology
    Pinus uliginosa
    peat bog
    Opis:
    Cones of Pinus uliginosa from the "Torfowisko pod Węglińcem" reserve were tested biometrically, on the basis of 16 characters.The obtained data were statistically analysed.The cone scale width, the ratio of cone length/width and the maximal diameter of cone were the most stable, while the cone scale thickness and the ratio of cone scale length/thickness were the most variable of the cone characters.The intrapopulational differentiation was not big.The examined pine species has cones with characters which are intermediate between Pinus sylvestris, P. mugo and P. uncinata.
    Źródło:
    Dendrobiology; 2003, 49
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Provenance contribution to genetic composition of progeny from outbreeding seed orchard of Picea abies
    Autorzy:
    Chalupka, W
    Misiorny, A.
    Rozkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41373.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    international conference
    Europe
    forest ecosystem
    plant breeding
    tree
    Norway spruce
    Picea abies
    provenance
    progeny
    genetic composition
    cone yield
    seed production
    seed orchard
    Opis:
    The abundant flowering, observed in 2004 in a model outbreeding seed orchard established in Kórnik, Poland, promoted crossing between clones of five geographically distant populations of Norway spruce. The clones were selected from a group of ca. 1100 provenances participating in the international IUFRO 1964/68 experiment and performing best in terms of growth traits and adaptability. In the seed orchard, 91.3% of clones and 64.1% of grafts produced female and/or male strobili. Statistically significant differences between the clones were only found in the number of mature cones produced. The mean number of mature cones in individual clones was also significantly correlated with the latitude of the place of origin of maternal populations (r = 0.88, p = 0.047). The nearly equal percentages of clones representing each of the five populations in the outbreeding seed orchard (from 23.2 to 17.5%) resulted finally in the highly unequal production of full seeds by each population (from 62.9 to 0.7%). These data provide evidence to suggest that the level of genetic diversity in the progeny, expected from the number of growing clones, diverges from the level resulting from the contribution of clones to the full seed production which is an effective measure of the genetic composition of progeny. To avoid this divergence, an outbreeding seed orchard could be established with unequal proportions of clones from different provenances, considering the knowledge of their flowering phenology, and individual variation in flowering and cone production.
    Źródło:
    Dendrobiology; 2009, 61 Supplement
    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
      Wyświetlanie 1-9 z 9

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