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    Wyświetlanie 1-4 z 4
    Tytuł:
    Flowering of Picea abies (L.) Karst. clones of Istebna origin in the Kórnik seed orchard
    Autorzy:
    Chalupka, W
    Rozkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41272.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Norway spruce
    Picea abies
    clone
    flowering
    graft mortality
    genetic variation
    seed orchard
    forest tree species
    Opis:
    The flowering and graft mortality of Norway spruce clones of Istebna origin was only slightly different from clones of other origin in the same seed orchard. The negative effect ofmoving Istebna clones from the south to the north of their origin was probably compensated by moving them from a higher altitude to lowland. There is a danger that the complete loss of several clones, observed in the seed orchard with time,may really decrease the expected level of genetic variation in the progeny. It is recommended that the mortality of grafts and the reduction in the number of clones in the seed orchard should be under permanent observation.
    Źródło:
    Dendrobiology; 2004, 51 Supplement
    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:
    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:
    Cechy przyrostowe i jakościowe modrzewia polskiego [Larix decidua subsp. polonica (Racib.) Domin] z Góry Chełmowej w 37-letnim doświadczeniu rodowym
    Growth and quality traits of half-sib progeny of Polish larch [Larix decidua subsp. polonica (Racib.) Domin] from Gora Chelmowa during 37 years of growth
    Autorzy:
    Rozkowski, R.
    Chmura, D.
    Chałupka, W.
    Guzicka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/973755.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    modrzew polski
    Larix polonica
    rody hodowlane
    przyrost drzew
    leśnictwo
    drzewa leśne
    zmienność cech
    przeżywalność
    cechy jakościowe
    powierzchnie doświadczalne
    Góra Chełmowa
    heritability
    productivity
    selection
    European larch
    Opis:
    We have investigated among−family variation in growth and quality traits of Polish larch [Larix decidua subsp. polonica (Racib.) Domin] from Góra Chełmowa and Bliżyn. Growth traits were measured several times during the 37 years of growth in a progeny test in Kórnik (52 15’N and 17 04’E), while quality traits were investigated at age 22. We have found significant among−family variation in survival rate at age 15; DBH at age 15, 20, 22 and 37; and stand productivity at age 22. Family heritability was high for DBH (0.6−0.8), except after the thinning (0.41). For basal area it was increasing from about 0.4 at age 15 to about 0.7 at age 37. The larch population from Góra Chełmowa is distinguished by a characteristic deformation of a lower trunk (saber−shape). Such a deformation was also observed in this experiment with a high family heritability (0.83). Other quality traits – self−prunning, branch thickness and branch length – did not vary among families. In all traits, the larch family from Bliżyn was better−performing than families from Góra Chełmowa. However, a high variation among tested families and high values of heritability estimates lend possibility of selecting best parents that could potentially be crossed with other highly productive ones of better quality to transmit into progeny other favorable traits of larch from Góra Chełmowa – high resistance to abiotic stresses and low susceptibility to larch cancer. Value of such progeny should be tested in the future.
    Źródło:
    Sylwan; 2011, 155, 09; 599-609
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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