Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 17

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  China aster
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
Określono w jaki sposób parametry kondycjonowania wilgotność nasion oraz czas ich inkubacji wpływają na starzenie się nasion astra chińskiego ‘Jolanta’. Nasiona kondycjonowano do wilgotności 30; 32,5; 35; 37,5 i 40% metodą moczenia w określonych dawkach wody i moczenia w nadmiarze wody, a następnie inkubowano przez 1-10 dni, w 20°C. Po inkubacji nasiona wysuszono do wilgotności początkowej (8,2%) i poddano testowi przyspieszonego starzenia, przechowując je nad przesyconym roztworem chlorku sodu (NaCl) w 30°C i 80% RH, przez 0-21 tygodni. Przeprowadzony test starzenia kondycjonowanych nasion wykazał, że niezależnie od zastosowanej metody uszlachetniania, wraz z wydłużaniem się czasu przechowywania ich nad wodnym roztworem chlorku sodu nasiona traciły żywotność. Szybkość starzenia się nasion była uzależniona od stopnia uwilgotnienia oraz czasu inkubacji nasion astra chińskiego. Kondycjonowanie nasion w określonych dawkach wody starzenie się nasion w większym stopniu, niż kondycjonowane w nadmiarze wody. Badania dowiodły, że 1 dzień inkubacji nasion odpowiednio uwilgotnionych podczas kondycjonowania przedłużał ich żywotność w największym stopniu.
The effects of water monocultures of different species of algae on the China aster seed germination and growth of seedlings was evaluated. The enzyme activity in seeds, their germination and seedling growth on filter paper moistened with cell water monocultures of algae, as well as the emergence and growth of seedlings from seeds moistened for 24 hours in these monocultures or after moistening the soil with them, were evaluated. The used water monocultures of algae did not affect seed germination. Similarly 24-hour seed moistening did not affect the seedling growth. Roots and hypocotyls grew faster on filter paper and in the soil moistened with water monocultures of all species of algae used separately. The seed soaking in these monocultures increased the activity of phosphatase, RN-ase and stability of membranes.
The effects were investigated of phosphorus nutrition and AMF inoculation on nutritional status, growth, and flowering of China aster (Callistephus chinensis (L.) Nees) ‘Milady’ during cultivation on ebb-and-flow benches. Two P treatments of 8.68 and 43.40 mgxdm-3 were applied. One month after inoculation the roots of inoculated plants were infected by mycorrhizal fungi. The control plants had no root infection. The mycorrhizal fungal colonization in plants that were fertilized at 8.68 and 43.40 mg x dm-3 P was 67% and 60% respectively. Slightly increased P content was detected in leaves of mycorrhizal plants grown under low P level. Mycorrhization did not affect leaf P content of plants grown in high P level. Increased Mg content was measured in leaves of mycorrhizal plants grown under both P levels. Mycorrhizal and nonmycorrhizal plants did not differ with regard to leaf N, K, and Ca contents. P nutrition did not also affect the contents of these elements in leaf tissue. Mycorrhization decreased the pH and lowered salt accumulation in growing media. Significantly lower shoot biomass, plant height, shoot number were recorded in all plants inoculated with AMF. Mycorrhization also delayed flowering of China aster; the high P level slightly accelerated it. Mycorrhizal plants had fewer flower buds and flowers than nonmycorrhizal ones. The high P level increased the number of flowers of nonmycorrhizal plants only.
The effect of the new growth stimulator with the cytokinin nature Ivin was investigated at the parameters of growth, blooming and chlorophyll concentration of the leaves of Callistephus chinensis (L.) Ness. plants. The researched plants grow under the impact of industrial and exhaust fumes. The intensification of the growth processes of the treatment plants in comparison with untreated was established. The processed specimens enhance height, the number of side shoots, quantity of the leaves and their area as well as the area of the total assimilation plants surface with increasing of the vegetative mass of the plants accordingly. At the same time, the number of inflorescences and their average diameter increase. There was no significant difference in essential influence of the biostimulant upon the plants of Callistephus chinensis between breeds “Viktoria Sharlachovaya” and “Strausovo pero Rubinovaya” with the exception of some variables (total assimilation surface). The concentration of chlorophyll in leaves of Callistephus chinensis plants increases under spraying by Ivin. The rising occurs originally after spraying seedlings due to chlorophyll, after the third treatment (flower-bud formation) – due to both forms of chlorophylls was established, as well as the breed specific reaction of plants was determined. The novelty of this work consists in the investigation of the influencing the growth stimulator on the development of the ornamental flower plants in the conditions of environmental pollution. The treatment of this preparation is appropriate for stimulation of growth and intensity of bloom of the ornamental flower plants of urban territories.
A laboratory experiment was conducted in 2015 to evaluate the germination energy and capacity of seeds of four ornamental plant species, treated with various biologically active substances. Three replications of the experiment were performed in three independent series. The experimental materials comprised seeds of four ornamental plant species: China aster (Callistephus chinensis (L.) Nees), scarlet sage (Salvia splendens Sellow ex Roemer & J.A. Schultes), common zinnia (Zinnia elegans Jacq.) and French marigold (Tagetes patula L.), which constituted the first experimental factor. The second experimental factor were biostimulants used for seed pre-conditioning: Effective Microorganisms, Trichoderma spp. and Goёmar Goteo. Seeds soaked in distilled water were the control. French marigold seeds were characterised by the highest average germination energy and capacity in three experimental series (mean values) and in each of the series. Scarlet sage seeds had the lowest germination energy, and common zinnia seeds had the lowest germination capacity in experimental series 1 and 3 and in three series (mean values). The biostimulants used for pre-conditioning exerted varied effects on the germination energy and capacity of seeds of the analysed ornamental plant species. The plant species compared in the study responded differently to the tested biostimulants. The germination energy and capacity of seeds of Callistephus chinensis (L.) Ness and Tagates patula L. decreased in response to the applied biostimulants.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.