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Wyszukujesz frazę "dormancy breaking" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Dormancy breaking in Savin juniper [Juniperus sabina L.] seeds
    Autorzy:
    Tylkowski, T
    Powiązania:
    https://bibliotekanauki.pl/articles/56737.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    stratification
    dormancy breaking
    seed dormancy
    seedling
    propagation
    Savin juniper
    shrub
    natural stand
    Pieniny Mountains
    Juniperus sabina
    seed
    vegetation season
    Opis:
    Savin juniper (Juniperus sabina L.) is a relict shrub in Poland with only one natural stand in Pieniny Mts. Se- eds require warm followed by cold stratification to overcome dormancy. Application of temperature regime at 20°/3°C layout, for 14 and 17 weeks respectively, is more effective than stratification at 15°/3°C. Interruption of warm stratification phase after 7 weeks and seeds drying at room temperature for 3-days with warm stratification follow-on resulted in increasing of germination capacity from 25% to approximately 45%. Germinated seeds pricked to substrate into containers gave seedlings 3 cm high when cultivated under plastic tunnel in the first vegetation season.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2010, 79, 1; 27-29
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dormancy breaking, germination, and seedling emergence from seeds of Crataegus submollis
    Autorzy:
    Bujarska-Borkowska, B
    Powiązania:
    https://bibliotekanauki.pl/articles/41762.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    hawthorn
    Crataegus submollis
    seed
    seedling emergence
    germination
    dormancy breaking
    stratification
    scarification
    desiccation
    storage
    Opis:
    Effects of several stratification variants on seed dormancy breaking were compared in Crataegus submollis Sarg. (hairy cockspur-thorn or Quebec hawthorn). Ripe seeds were collected (in October), cleaned, and dried to a moisture content of 7–12%. Seed dormancy in this species was broken most effectively by warm-cold stratification of nutlets, in a substrate or without any substrate, at 15~25°/3°C or 20~30°/3°C, i.e. with a cyclically alternating warm stage (16+8 hrs or 24+24 hrs/cycle) lasting 16–20 weeks, followed the cold stage lasting ca. 20 weeks, i.e. till the appearance of the first germinating seeds. After stratification, emergence rate is equally high (ca 50%) at cyclically alternating temperatures of 3~15°C and 3~20°C (16+8 hrs). Chemical scarification of nutlets in 96% sulphuric acid for 3 hrs, followed by warm-cold stratification at 20~30°/3°C, with a short, 4-week warm stage, also ensures a high emergence rate (58%). Seed desiccation (in nutlets) slowly to a moisture content of 10–12%, after stratification in a substrate or without any substrate as well as after scarification, results in a reduced emergence rate, especially if seeds are dried to the lower moisture content. Seed storage (in nutlets after drying to a moisture content of 10%) for 10 years at –3°C, does not decrease the emergence rate (93%) after stratification at 20~30°/3°C in a substrate, with a cyclically alternating warm stage (24+24 h) lasting 16 weeks.
    Źródło:
    Dendrobiology; 2007, 58; 9-15
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of dormancy breaking in stored seeds on germinability and seedling emergence of Tilia platyphyllos
    Autorzy:
    Tylkowski, T
    Powiązania:
    https://bibliotekanauki.pl/articles/41170.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    dormancy breaking
    seed
    stored seed
    germinability
    seedling emergence
    Tilia platyphyllos
    scarification
    stratification
    seed viability
    Opis:
    Fruits of large-leaved lime dried to 10% may be stored for 16 years in sealed containers at –3°C without loosing seed viability. Dormancy of seeds, extracted from hard fruit coats, may be released after chemical scarification in concentrated sulphuric acid for 10 minutes, followed-by stratification without any medium (chilling) at the temperature of 3°C, for 20–24 weeks, i.e. until the first seeds start to germinate. After such pretreatment, during the germination test conducted at alternating temperatures 3~15°C (16 + 8 hours/day) seeds germinate near 90% in several weeks. For seedling production scarified and stratified seeds should be sown in early spring into trays under a plastic tunnel which ensures a high percentage of seedlings emergence. Sowing of the pretreated seeds in spring in a open nursery gives poor results.
    Źródło:
    Dendrobiology; 2006, 56; 79-84
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Activity of phosphofructokinase and phosphoenolopyruvate carboxylase in Norway maple (Acer platanoides L.) seeds during dormancy breaking
    Autorzy:
    Krawiarz, K
    Szczotka, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/41615.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    phosphoenolopyruvate carboxylase
    dormancy breaking
    glucose
    activity
    sucrose
    phosphofructokinase
    Norway maple
    Acer platanoides
    seed
    Opis:
    We analysed changes in the activity of phosphofructokinase (PFK) and phosphoenolopyruvate carboxylase (PEPC), and in the glucose and sucrose contents of Norway maple seeds stratified at 3°C (dormancy broken) or treated at temperature 15°C (dormancy not broken). We found that changes in the activity of enzymes are not linear, and 2-3 stages may be distinguished. Dormancy breaking and seed germination is associated with a high activity of PFK and PEPC, and a high glucose level in embryo axes.
    Źródło:
    Dendrobiology; 2002, 47
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Functional analysis of ABI5 and RGL2 in dormancy breaking of Acer platanoides L. seeds
    Autorzy:
    Staszak, A.
    Guzicka, M.
    Maslowska, S.
    Pawlowski, T.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/80156.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dormancy breaking
    germination
    Acer platanoides
    seed
    environment condition
    Norway maple
    conference
    gibberellic acid
    abscisic acid
    functional analysis
    ABI5 expression
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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