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PL
Zapewne każdy, kto miał okazję oglądać obsypane kwiatami magnolie, urzeczony oryginalnością ich kształtów i barw, z trudem odrywał od nich wzrok. Istotnie, należą one do najpiękniejszych drzewiastych roślin ozdobnych.
EN
The response surface methodology accompanied by Central Composite Design (CCD) was employed in this study to optimize the Alternanthera spp-based phytoremediation process for the individual removal of acetaminophen and methylparaben. Two operational variables, including concentration (A) (20, 60,100 mg/L) and sampling time (B) (7, 14, 21, and 35 days) were involved in the study for removal efficiency (Y) as response. CCD had required a total of 18 experiments for each compound. Analysis of variance (ANOVA) was conducted to verify the adequacy of the proposed mathematical models and revealed good agreement with the experimental data. The observed R2 values (0.9732 and 0.9870), adjusted R2 (0.9620 and 0.9816) and predicted R2 (0.9383 and 0.9721) for AC and MP, respectively, indicated that the developed models were significant at the 95% probability level. Concentration factor was found to be insignificant in the mathematical models; in contrast, sampling time was found to be of a crucial role. The removal of AC and MP were 89.23% and 64.48% under optimum conditions of A = 100 mg/L and B = 35 days respectively. The validation test confirmed the predicted results obtained by Central Composite Design, as the removals achieved under optimum conditions were 91.04% and 59.17% for AC and MP, respectively, which were in good agreement with the results proposed by the theoretical design.
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PL
Piwonie to jedne z najstarszych roślin ozdobnych, uprawiane w chińskich ogrodach już przed 3000 lat. Ich ozdobą są niezwykle pięne róźnorodne, a często też przyjemnie pachnące kwiaty.
EN
Iris species have great economic importance for their use in ornamental and pharmaceutical industry. Flora of Turkey reports about 43 local taxons of which 16 are endemic. Iris suaveolens Boiss. et Reuter is an endemic species with high seed dormancy and has high tolerance to cold and drought. This study focused on seed dormancy break of I. suaveolens under in vitro conditions. In the first experiment, the seeds were given stratification treatment on MS medium containing different concentrations of BAP with or without NAA. The 2nd experiment reports effects of alternative combinations of cold (at 4°C, 24 h dark) – warm (16 h light photoperiod) conditions on medium containing different concentrations of plant growth regulators on agar solidified MS medium. Both experiments showed about 8.33% seed germination against 64.5% seed viability as confirmed by tetrazolium test. All germinating seeds were abnormal and very weak. In the third experiment, 10 minutes acid scarified seeds cultured at 24°C in 16 h light photo period on MS medium achieved 60.0% germination. Similar treatment under cold + dark condition was inhibitory and failed to show identical results. This underlines the importance of acid scarification, photoperiod and warm treatments of I. suaveolens seeds to break seed dormancy. All germinated seeds showed normal growth and development under field conditions.
EN
Changes in production methods of Ericaceae ornamental plants could have caused them to become more vulnerable to weak pathogens. The aim of this study was to investigate the casual agent of Ericaceous plant damage. Plants and peat substrate were collected from two nurseries near Poznań. After isolation on agar medium and fulfilling Koch postulates it was found that the casual agent of Ericaceae ornamentalplant damage was Pestalotiopsis sydowiana (Bresadole) B.C. Sutton, a new species noted in Poland.
PL
Zmiany w systemie produkcji ozdobnych roślin wrzosowatych mogły spowodować wzrost znaczenia i szkodliwości słabych patogenów. Dlatego celem badań było określenie sprawców uszkodzeń roślin wrzosowatych. Badane rośliny i substrat torfowy pochodziły z dwóch szkółek znajdujących się w rejonie Poznania. Po przeprowadzeniu izolacji na pożywki agarowe i wypełnieniu postulatów Kocha stwierdzono, że sprawcą uszkodzeń roślin wrzosowatych był gatunek Pestalotipsis sydowiana (Bresadole) B.C. Sutton. Gatunek ten jest w Polsce nowym groźnym patogenem roślin wrzosowatych.
EN
A study was carried out at the Department of Horticulture, KNUST from 8th January, 2017 to 17th March, 2017 to determine the best propagating medium for Ixora coccinea and Ficus pumila. The design was a Complete Randomized Design with four treatments replicated three times. The treatments were; topsoil only, biochar only, mixture of topsoil and biochar (1:1) and mixture of topsoil and biochar (2:1) . The study revealed that the treatment with the mixture of topsoil and biochar (2:1) was the best medium, in terms of physical and chemical properties and produced the highest number of leaves and rooted cuttings in Ficus pumila. Topsoil only had highest number of leaves and roots for Ixora coccinea. The biochar medium started rooting earlier for Ficus pumila at 2 weeks and recorded the highest number of leaves, while that of Ixora coccinea rooted at the fourth week towards the fifth week. The study concluded that mixture of topsoil and biochar (2:1) could be used for propagating difficult to root ornamental plants whiles Biochar only could also be used to propagate Ficus pumila.
19
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PL
Turzyce (Carex) to wieloletnie rośliny zielne na pierwszy rzut oka przypominające trawy, należą jednak do zupełnie innej rodziny botanicznej - ciborowatych (Cyperaceae) i różnią się od traw kilkoma istotnymi szczegółami morfologicznymi, m.in. ułożeniem liści, kształtem łodyg, budową kwiatów.
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