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    Wyświetlanie 1-6 z 6
    Tytuł:
    Evaluation of Seed Emergence, Seedling Vigor Enhancement of Some Populations From Satureja Bachtiarica With Chemical, Mechanical and Physiological Treatment
    Autorzy:
    Alizadeh, M. A.
    Arab, H.A.
    Tabaie, R.
    Nasiri, M.
    Jafari, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199668.pdf
    Data publikacji:
    2016-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    dormancy
    germination
    Satureja bachtiarica
    vigor
    Opis:
    The seeds of 3 populations from Satureja bachtiarica were collected from three native vegetation areas (Simirom2, Sharkord and Yazd). The different treatments including: cold stratification, gibberlic acid (50 and 100 ppm) Potassium nitrate (0.2 and 0.4 percent). Physical scarification (sand paper), chemical scarification (Ethylic alcohol %70) and distilled water (control) were used for breaking dormancy of the seed samples. For greenhouse experiment, the seed samples were treated with treatments and then were sown in pots using randomize design with three replications. Emergence percentage, emergence speed, length of root and shoot, seedling length, root/shoot length ratio, vigor index, seedling fresh and dry weight, dry/fresh weight ratio were evaluated during 45 days of experiment. Comparing of population Semirom2 form savory of Bachtiary was higher than other population. It was concluded that effect of gibberlic acid and potassium nitrate was higher than physical scarification and chemical scarification comparing with control.
    Źródło:
    Plant Breeding and Seed Science; 2016, 74; 37-44
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of several methods for breakind dormancy of bitter vetch seeds (Vicia Ervilia L.)
    Autorzy:
    Sepehri, Ali
    Rouhi, Hossein Reza
    Sefidkhani, Leila
    Powiązania:
    https://bibliotekanauki.pl/articles/2199637.pdf
    Data publikacji:
    2015-06-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    bitter vetch
    seed dormancy
    germination
    Opis:
    This study analysed the effects of different treatments on breaking dormancy and germination of bitter vetch (Vicia ervilia L.) freshly harvested seeds for seeding immediately. Partial scarified seeds (30 seconds with sandpaper) were subjected to different treatments including: GA3 (250, 500 and 750 ppm), KNO3 (0.1, 0.2 and 0.3% w/v), cold stratification (2, 4 and 6 days), sulfuric acid (25, 50 and 75 seconds), hot water (90°C; for 2.5 and 5 minutes), hydropriming via seed soaking in distilled water (4 and 8 hours) and mechanical scarification. Among the mentioned treatments, cold stratification for 6 days had a best effect on germination related parameters final germination percentage, mean germination time and vigour index than the other periods. In contrast to scarification with acid and hot water, mechanical scarification improved germination parameters but this effect was lower than the cold stratification. The results suggest that bitter vetch seed has both physical and physiological dormancy.
    Źródło:
    Plant Breeding and Seed Science; 2015, 71; 57-66
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed Germination Plasticity of Two Endangered Species of Ferula in the Context of Climate Change
    Autorzy:
    Shanjani, Parvin Salehi
    Mousavi, Amir
    Farsad, Faeze Rasoulzadeh
    Powiązania:
    https://bibliotekanauki.pl/articles/2199581.pdf
    Data publikacji:
    2020-11-27
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    Dormancy
    global warming
    Iran
    highland
    local adaptation
    Opis:
    Ferula assa-foetida and F. gummosa, Apiaceae, are important endemic and endangered medicinal plants. Survival of the species is threatened by climate change, overexploiting (as source of oleo-gum resin and for-age) and lack of organized cultivation. Cultivation of these valuable medicinal plants is restricted by insuffi-cient domestication knowledge. Germination characteristics of different populations of Ferula taxa were studied with the aim of describing and comparing their responses to continuous cold stratification condition. Germination cues for the species were complex, with dormancy mechanisms present to restrict germination until cold stratification are fulfilled. Results indicated that a period of 4 weeks of stratification is sufficient for germination of F. assa-foetida, but optimal germination of F. gummosa require stratification for periods of 8 weeks. Both species were able to germinate at very low temperatures (4°C). Within-taxon differences in dor-mancy breaking and seedling emergence may interpret as local adaptations. The continued regeneration and propagation of the species in the wild will depend on the temperature and moisture status of the soil during winter and the maintenance of conditions suitable for stratification for an appropriate length of time.
    Źródło:
    Plant Breeding and Seed Science; 2019, 80; 13-33
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed Germination Plasticity of Two Endangered Species of Ferula in the Context of Climate Change
    Autorzy:
    Shanjani, Parvin Salehi
    Mousavi, Amir
    Farsad, Faeze Rasoulzadeh
    Powiązania:
    https://bibliotekanauki.pl/articles/2199729.pdf
    Data publikacji:
    2020-06-30
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    dormancy
    global warming
    highland
    Iran
    local adaptation
    Opis:
    Ferula assa-foetida and F. gummosa, Apiaceae, are important endemic and endangered medicinal plants. Survival of the species is threatened by climate change, overexploiting (as source of oleo-gum resin and forage) and lack of organized cultivation. Cultivation of these valuable medicinal plants is restricted by insufficient domestication knowledge. Germination characteristics of different popula-tions of Ferula taxa were studied with the aim of describing and comparing their responses to continu-ous cold stratification condition. Germination cues for the species were complex, with dormancy mechanisms present to restrict germination until cold stratification are fulfilled. Results indicated that a period of 4 weeks of stratification is sufficient for germination of F. assa-foetida, but optimal germi-nation of F. gummosa require stratification for periods of 8 weeks. Both species were able to germi-nate at very low temperatures (4°C). Within-taxon differences in dormancy breaking and seedling emergence may interpret as local adaptations. The continued regeneration and propagation of the species in the wild will depend on the temperature and moisture status of the soil during winter and the maintenance of conditions suitable for stratification for an appropriate length of time.
    Źródło:
    Plant Breeding and Seed Science; 2019, 79; 71-90
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plausible Mechanisms by Which Ultrasonic Waves Affect Seeds
    Autorzy:
    Pour, Mohammad Eteghadi
    Hobbi, Mahsa
    Ghasemi, Hadi
    Nazari, Meisam
    Powiązania:
    https://bibliotekanauki.pl/articles/2199664.pdf
    Data publikacji:
    2016-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    cell area
    barley
    germination
    seed dormancy breaking
    sonication
    Opis:
    To study the effect of sonication on the seed germination percentage and rate as well as the cell area of barley (Hordeum vulgare L.) a laboratorial experiment was performed as Completely Randomized Design (CRD) with 3 replications. The results indicated that the ultrasonic waves affect the seed germination, germination rate and cell area significantly (at 0.05). The results of the mean comparison tests (LSD, 0.05) showed that the highest germination percentage (100 %), germination rate and cell area (1370.71 µ2 ) is achieved through 15 minutes exposure to ultrasonic waves. It is concluded that weakening the seed’s cell wall rigidity by sonication results in more and faster water imbibition by the cells and improved germination.
    Źródło:
    Plant Breeding and Seed Science; 2016, 74; 85-92
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physiological and physical seed dormancy of some hypericum species growing in Turkey.
    Autorzy:
    Çırak, Cüneyt
    Ayan, Ali Kemal
    Kevseroğlu, Kudret
    Powiązania:
    https://bibliotekanauki.pl/articles/2199016.pdf
    Data publikacji:
    2006-06-22
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    double dormancy
    germination
    Hypericum androsaemum
    H. lydum
    H. scabrum
    H. tetrapterum
    presoaking treatments
    Opis:
    To investigate the nature of dormancy in Hypericum androsaemum, H. scabrum, H. lydum and H. tetrapterum seeds which did not show germination under nor mal laboratory conditions. The 15 day long germination experiment under the constant light pre ceded by 30 min soaking in water (tap water, 40, 50 and 60°C hot water), GA3 (50, 100 and 150 ppm) and H2SO4 (1, 2 and 3%) was per formed. The germination response to the pre-soaking treatments was variable and discussed as a possible result of double dormancy involving partially dormant embryo and a chemical inhibitor for H. androsaemum and H. scabrum. Seed germination was restricted only by hard seed coat in H. lydum, and H. tetrapterum indicating the presence of physical dormancy.    
    Źródło:
    Plant Breeding and Seed Science; 2006, 53; 3-8
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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