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    Wyświetlanie 1-7 z 7
    Tytuł:
    Effect of scarification on breaking seed dormancy and germination enhancement in Annona muricata L. (Magnoliales: Annonaceae)
    Autorzy:
    Dada, C. A.
    Kayode, J.
    Arowosegbe, S.
    Ayeni, M. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075444.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Annona muricata
    Annonaceae
    Dormancy
    germination
    scarification
    Opis:
    The effect of various scarification method on breaking seed dormancy and germination enhancement in Annona muricata (Magnoliales: Annonaceae) was examined in this study via: mechanical scarification with sandpaper, file and stone; chemical scarification with 10, 25 and 50% H2SO4 for 5 seconds respectively; exposure to wet heat (hot water) for 1, 3 and 5 seconds; exposure to cold treatment by chilling in refrigerator of 4 ºC for 12, 18 and 24 hours; soaking in coconut water for 5, 10 and 15min and untreated seeds as the control. The results of the experiment showed that chemical scarification with H2SO4 at 50% for 5 seconds had significantly highest percentage germination (60%). This was followed by the seeds soaked in coconut water for 15 minutes (39.69). Seeds treated with 25% H2SO4 for 5 seconds had 30% germination. Other treatment were less or not effective. Untreated seeds had the least percentage germination (6%) with mean germination time of 40.20 and germination index of 0.27. The treatments that gave significantly higher germination percentages also produce low Mean Germination Time (30.01) and increased Germination Index (12.26). These characters shows that chemical scarification with H2SO4 at 50% for 5 seconds was the most effective treatment to break dormancy and enhancing seed germination in this species as revealed in this study.
    Źródło:
    World Scientific News; 2019, 126; 136-147
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality of seeds as a key to commodity cultivation of Lavatera Thuringiaca L. – plants with high potential for multi directional use
    Jakość nasion jako klucz do powszechnej uprawy ślazówki turyngskiej - rośliny o dużym potencjalnym wielokierunkowym wykorzystaniu
    Autorzy:
    Grzesik, M.
    Romanowska-Duda, Z.
    Janas, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/105888.pdf
    Data publikacji:
    2015
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    Lavatera thuringiaca L ‘Uleko’
    seeds
    germination
    scarification
    growth
    nasiona
    kiełkowanie
    skaryfikacja
    wzrost
    Opis:
    Lavatera thuringiaca ‘Uleko’ is a perennial plant little-known in Poland, although it has a very high potential for multi directional use in several areas of economy. However , very low seed germination harvested in the harvest ripening (maturity) phase (5-20%) makes commercial production of these plants difficult and reduces the economic efficiency of crops. The aim of this study was to develop effective methods of breaking seed dormancy using scarification. The study indicated the possibility of increasing the germination of seeds up to over 40% with mechanical scarification, and up to 85% after exposure to sulfuric acid. Application of these methods positively influenced the physiological activity, health and germination of seeds, as well as emergence and growth of plants, which can facilitate the production of this species on large acreages.
    Lavatera thuringiaca ‘Uleko’ to wieloletnia, mało znana w Polsce roślina, mimo że ma bardzo duży potencjał wykorzystania w wielu dziedzinach gospodarki. Problemem w jej uprawie jest bardzo niska zdolność kiełkowania nasion zebranych w fazie dojrzałości zbiorczej (5-20%), która utrudnia komercyjną produkcję tych roślin i zmniejsza opłacalność upraw. Celem pracy było opracowanie skutecznych metod przełamywania spoczynku nasion za pomocą różnych metod skaryfikacji. Badania wskazały na możliwość zwiększenia kiełkowania dojrzałych nasion do ponad 40% poprzez zastosowanie skaryfikacji mechanicznej i do 85% pod wpływem traktowania kwasem siarkowym. Zastosowanie tych metod pozytywnie wpłynęło na aktywność fizjologiczną, zdrowotność i kiełkowanie nasion oraz wschody i rozwój roślin, co może ułatwić produkcję tego gatunku na dużych areałach.
    Źródło:
    Acta Innovations; 2015, 15; 5-12
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Breaking of seed dormancy, germination and seedling emergence of the common hawthorn (Crataegus monogyna Jacq.)
    Autorzy:
    Bujarska-Borkowska, B
    Powiązania:
    https://bibliotekanauki.pl/articles/41072.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    stratification
    Crataegus monogyna
    common hawthorn
    scarification
    breaking
    seedling emergence
    hawthorn
    germination
    seed dormancy
    Opis:
    The most advantageous time for collecting fruits of the common hawthorn (Crataegus monogyna Jacq.) falls on October, when they are fully ripe. The stones extracted from the fruits must be dried at room temperature to the moisture content of about 10%. The dormancy of the common hawthorn seeds can be overcome by their stratification in a moist medium in one of the three thermal regimes: - 25°/3°C (16 weeks at 25°C followed by 15-18 weeks at 3°C, i.e. to the time when the first seedlings start to appear) - 20~30°/3°C (16 weeks at 20~30°C (16+8 hrs/day) followed by 15-18 weeks at 3°C, i.e. to the time when first seedlings start to appear) - 20~30°/3°C (16 weeks at 20~30°C (24+24 hrs) followed by 15-18 weeks at 3°C, i.e. to the time when first seedlings start to appear) Having been stratified, the seeds germinate vigorously (in 3-5 weeks) and at a high percentage at temperatures of 3~10°, 3~15°, 3~20° and 3~25°C, (16+8 hrs/day) and the seedlings emerge at 3~20°C (16+8 hrs/day) in 4-6 weeks. Storage for one year at -3°C in the case of the seeds dried after harvest to the moisture content of 10% does not reduce their germination capacity. Stones scarification in concentrated sulphuric acid for 120 minutes followed by stratification at 3°C has an adverse effect on seed emergence at the temperature 3~20°C (16+8 hrs/day). It is recommended that stratified seeds should be sown into the still cool soil at the end of March or the beginning of April, as the increased temperature induces the secondary dormancy in seeds.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed dormancy breaking in Crataegus pedicellata
    Autorzy:
    Bujarska-Borkowska, B
    Powiązania:
    https://bibliotekanauki.pl/articles/41623.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    scarlet hawthorn
    Crataegus pedicellata
    seed dormancy breaking
    stratification
    scarification
    germination
    seedling emergence
    desiccation
    Opis:
    The effects of stratification and scarification on seed dormancy breaking were compared in scarlet hawthorn (Crataegus pedicellata Sarg. = C. coccinea L). Ripe fruits were collected (in October) and the extracted nutlets were cleaned, and dried to a moisture content of 9–12%. Seed dormancy in this species was broken most effectively by warm-followed-by-cold stratification of nutlets, in a substrate or without any substrate, as well as at 15~25° or 20~30°C, i.e. with a cyclically alternating warm stage (16+8 hrs or 24+24 hrs/cycle) lasting 16–20 weeks, followed by the cold stage at 3°C lasting ca. 20 weeks, i.e. till the appearance of the first germinating seeds. After stratification, emergence rate is equally high (ca 76%) at cyclically alternating temperatures of 3~15°C or 3~20°C (16+8 hrs). Chemical scarification of nutlets in 96% sulphuric acid for 2 hrs, followed by warm-cold stratification at 20~30°/3°C, with a short, 4-weeks warm stage, also ensures a high emergence rate (85–93%). Seed desiccation (in nutlets) slowly to moisture content of 12–14%, after stratification in a substrate or scarification does not reduce the seedling emergence of seeds. Emergence decreased when seeds were desiccated after stratification without any substrate. Results provide new methods of breaking of dormancy and high germination and emergence of hard-coated Crataegus seeds in controlled conditions.
    Źródło:
    Dendrobiology; 2008, 60; 51-56
    1641-1307
    Pojawia się w:
    Dendrobiology
    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:
    Wpływ terminu zbioru rutwicy wschodniej (Galega orientalis Lam.) na plon oraz wpływ metody skaryfikacji na jakość nasion
    The influence of sampling time of fodder galega (Galega orientalis Lam.) on seed yield and the effect of scarification method on seed quality
    Autorzy:
    Sowiński, Józef
    Możdżeń, Edward
    Powiązania:
    https://bibliotekanauki.pl/articles/41444440.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    energia kiełkowania
    rutwica wschodnia
    skaryfikacja
    twardość nasion
    zdolność kiełkowania
    Galega orientalis
    germination
    hard seed
    scarification method
    Opis:
    Badania polowe przeprowadzono w Sudetach, w Górskiej Stacji Wdrożeniowo-Upowszechnie-niowej w Paszkowie k/Polanicy Zdroju na wysokości 540 m npm. Z plantacji rutwicy wschodniej (od fazy, gdy ok. 50% strąków było brązowych) przez 9 tygodni (w odstępach 7-dniowych) pobierano owocostany. Opóźnianie terminu zbioru spowodowało spadek plonu nasion, nie stwierdzono natomiast istotnych różnic w elementach struktury plonu. Termin zbioru nie miał istotnego wpływu na udział nasion twardych, który wynosił od 64,7 do 73,4% (bez skaryfikacji). Zastosowanie skaryfikacji mechanicznej i chemicznej korzystnie wpłynęło na energię oraz zdolność kiełkowania, a traktowanie nasion rutwicy stężonym kwasem siarkowym było bardziej skuteczne. Analiza mikroskopowa potwierdziła, że pod wpływem kwasu uszkodzona została okrywa nasienna, zwłaszcza w okolicach okienka, natomiast skaryfikacja mechaniczna powodowała zarysowania powierzchni nasion.
    Field experiments were carried out in the Sudety Mountains conditions at the Mountain Station Paszków belonging to Lower Silesian Centre of the Agricultural Advisory in Wrocław at an altitude of 540 m a.s.l. Pod samples were taken every week from the fodder galega field. The sampling began when 50% of pods were fully ripening (brown). A delay in sampling resulted in the decrease in seed yield but it did not affect a number of seeds per pod, weight of seeds from pods and weight of 1000 seeds. A date of sampling had no effect on the percentage of hard seeds, which ranged from 64.7% to 73.4% (without scarification). Both mechanical and chemical scarification enhanced the germination assessed after 4 and 7 days. Scanning electron microscope analysis showed that chemical scarification caused damages to seed coat, especially in the region of a micropyle, whereas mechanical scarification effected in scratching of seed coat.
    Źródło:
    Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2007, 246; 179-190
    0373-7837
    2657-8913
    Pojawia się w:
    Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed dormancy breaking in Crataegus laevigata
    Autorzy:
    Bujarska-Borkowska, B
    Powiązania:
    https://bibliotekanauki.pl/articles/41708.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    scarification
    stratification
    germination
    seedling emergence
    desiccation
    storage
    seed dormancy breaking
    Crataegus laevigata zob.Crataegus oxyacantha
    tree species
    shrub species
    Crataegus oxyacantha
    Opis:
    Laboratory experiments were made to determine the optimum conditions for dormancy breaking in the midland hawthorn (Crataegus laevigata (Poir.) DC. = C. oxyacantha L.). Its small applelike fruits should be collected when they are fully ripe (in Poland in October). The nutlets extracted from the fruits must be dried at room temperature to the moisture content of 9–13%. The dormancy of midland hawthorn seeds can be overcome by: (1) stratification in a moist medium: 20~30°C/3°C, 16–20 weeks at 20~30°C (16+8 hrs or 24+24 hrs) followed by 16–18 weeks at 3°C, i.e. to the time when first radicles start to appear; or (2) chemical scarification in concentrated sulphuric acid for 2 or 3 hrs, followed by warm stratification at 27.5°C or 20~30°C for 4 weeks and cold stratification at 3°C, lasting 19–21 weeks, i.e. to the time when first radicles start to appear. The stratified seeds germinate vigorously (in 3–5 weeks) and at a high percentage at temperatures of 3~15°C or 3~20°C (16+8 hrs) and all seedlings emerge in such conditions about 4–6 weeks after sowing. Seed germination after stratification or scarification can be stopped by partial desiccation of seeds. Seed desiccation after stratification to the moisture content of 10–13% and sealed storage at –3°C for one year do not reduce seed germination and seedling emergence rates of the previously pretreated seeds. Storage for 20 months at –3°C of seeds dried after harvest to the moisture content of 14% does not reduce their germination and seedling emergence.
    Źródło:
    Dendrobiology; 2006, 56; 3-11
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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