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    Wyświetlanie 1-4 z 4
    Tytuł:
    Przegląd systematyki rodzaju Populus L.
    A review of systematics of Populus L.
    Autorzy:
    Korbik, Mateusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1196159.pdf
    Data publikacji:
    2021-04-27
    Wydawca:
    Polskie Towarzystwo Dendrologiczne
    Tematy:
    poplar
    cottonwood
    aspen
    taxonomy
    Opis:
    Populus is a genus that contains numerous taxa that are often difficult to identify. They are grouped into six sections which are mainly based on the differences in the structure of flowers and leaves. Nevertheless, other features are also of great importance in identifying individual sections. In this paper, individual sections are characterized. Two subsections within the Populus section (syn. Leuce Duby) are distinguished, due to the clear differences between white poplars and aspens. The sections are as follows: sect. 1. Abaso Eckenw. (mexican poplar), sect. 2. Turanga Bunge (arid and tropical poplars), sect. 3. Leucoides Spach (bigleaf poplars), sect. 4. Aigeiros Duby (cottonwoods and black poplar), sect. 5. Tacamahaca Spach (balsam poplars), sect. 6. Populus, with two subsections: 6a. Populus (white poplars) and 6b. Trepidae (Dode) Tamm (aspens).
    Źródło:
    Rocznik Polskiego Towarzystwa Dendrologicznego; 2020, 68; 77-90
    2080-4164
    2300-8326
    Pojawia się w:
    Rocznik Polskiego Towarzystwa Dendrologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed vigor, photosynthesis and early growth of saplings of different triploid Betula families
    Autorzy:
    Mu, H.
    Jiang, J.
    Li, H.
    Liu, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/41671.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    seed vigor
    photosynthesis
    early growth
    sapling
    triploid
    Betula
    birch
    polyploidy
    European aspen
    aspen
    Populus tremula
    germination energy
    Opis:
    Breeding scientists have given extensive attention to triploids in trees because of their importance to forestry. Consequently, creating and breeding triploids of good quality has become one of purposes of tree breeding. We chose two autotetraploids (Betula platyphylla, named Q10 and Q65) as female parents and eight hybrid diploids (B. platyphylla × B. pendula, named F1 – F8) as male parents to obtain progenies through controllable pollination, resulting in triploid progenies. Germination rate and germination energy of triploid seeds of Q65 were significantly higher (P < 0.01) than in triploid seed s of Q10. Triploid families with Q65 as female parent had a large quantity of saplings, whereas triploid families with Q10 as female parent had a small quantity of saplings. Triploid families with Q65 as female parent were generally superior in base diameter and height to base diameter ratio when compared to a diploid family. Q65×F3 was preliminarily recognized as the superior family. These results demonstrate that the female parent has a major influence on triploid progenies, although the male parent also has a small influence. The results provided a reference to build seed orchards of triploid birch trees, choose tetraploids as female parents and forecast triploid families of good quality.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fast and cheap identification of elite aspen clones in the North-West of Russia using ISSR markers
    Autorzy:
    Zhigunov, Anatoly V.
    Shabunin, Dmitrii A.
    Butenko, Olesia Yu.
    Lebedeva, Marina V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2045732.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    aspen
    elite clones
    molecular markers
    ISSR
    clonal plantations
    Opis:
    In 2001–2006, several experimental aspen plantations were established in the North-West of Russia (Leningrad region). Three in vitro propagated elite aspen (Populus tremula L.) clones from the Kostroma Forest Research Station were used as the planting stock for plantations. The planting plans of some experimental plantations were lost, which made it impossible to identify the genetic lineages. 13-years old unknown aspen clones demonstrated prominent growth rates, and reliably overtook natural aspen coppice. ISSR markers were used for fast and cheap restoring of the missing planting plan of the experimental aspen plantation under study; as a result, progenies of three elite aspen clones were recognized. The best fast-growing and stem rot resistant aspen clones was identified and called “Kostroma”.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 4; 207-213
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth of Populus tremula on CO2-enriched soil at a natural mofette site
    Autorzy:
    Vejpustkova, M.
    Thomalla, A.
    Cihak, T.
    Lomsky, B.
    Pfanz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/41317.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant growth
    Populus tremula
    carbon dioxide
    soil
    root zone
    tree ring
    natural mofette
    mofette site
    aspen
    Opis:
    The main objective of the study was to evaluate inter-annual ring-width variation and cumulative growth of aspen (Populus tremula L.) trees growing on the spots of different soil CO2 concentration at natural mofette site. We hypothesized that growth rate of trees is affected by CO2 concentration within their rooting zone. The study site was situated in the flood plain of Plesná stream near Hartoušov (Western Bohemia). Trees growing in a pure aspen stand were selected according to the CO2-gas regime within their rooting zone. Five high [CO2] trees (10–25% CO2 in the soil) and five low [CO2] trees (up to 3% CO2 in the soil) were sampled. Stem growth analysis of each trunk was carried out to study growth pattern in detail. High and low [CO2] trees significantly differed in a growth rate. At the age of 25 years, the basal area of high [CO2] trees exceeded low [CO2] trees by 39 %. The positive effect of CO2 on annual increment was pronounced particularly in the years with optimal growing conditions. Results suggest that trees can be fertilized not only by elevated atmospheric CO2 but also when fed with CO2 via the roots.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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