Autor: Sliwinska, E. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Flow cytometric estimation of ploidy in anisoploid sugar-beet populations
Autorzy:: Sliwinska, E
Steen, P.
Powiązania:: https://bibliotekanauki.pl/articles/2048141.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: production
Beta vulgaris
poliploid cultivar
ploidy determination
nuclear DNA
flow cytometry
DNA
seed
sugar-beet
Opis:: Determination of ploidy level is a common practice in sugar-beet breeding and seed production. Lately many laboratories have replaced microscopic chromosome counting by flow cytometric estimation of the nuclear DNA content. The possibility of direct estimation of cytological composition in anisoploid populations instead of individual plant analyses was investigated. Diploid, triploid and tetraploid sugar-beet lines as well as their mixtures were tested. The results obtained show that the suggested method is fast, simple and, after a proper transformation of the computer values, could be applied in breeding and seed production of polyploid crops. Precise estimation of contamination by small admixture of seeds or plants of undesirable ploidy, however, requires individual plant rather than population analyses.
Źródło:: Journal of Applied Genetics; 1995, 36, 2; 111-118
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Estimation of the share of components of different ploidy in anisoploid sugar-beet [Beta vulgaris L.] populations by flow cytometry
Autorzy:: Sliwinska, E
Jansen, R
Powiązania:: https://bibliotekanauki.pl/articles/2046829.pdf
Data publikacji:: 1997
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Beta vulgaris
ploidy determination
breeding
flow cytometry
seed production
sugar-beet
Opis:: Flow cytometry is commonly used in sugar-beet breeding and seed production for ploidy estimation. By means of this method individual plants as well as plant populations can be analysed. An interpretation of histograms obtained from anisoploid populations, however, causes some problems to the breeder. Bulks of diploid, triploid and tetraploid sugar-beet plants in different proportion and ploidy combinations (2x + 3x, 2x + 4x, and 3x + 4x) were tested in order to determine the relation between the actual share of the components of different ploidy levels in tested populations and that calculated on the basis of flow cytometry. In this way agraph for estimation of the share of different ploidy components was obtained. Repeatability of the results proves the usefulness of flow cytometric analysis of anisoploid plant populations in breeding and seed production of polyploid crops.
Źródło:: Journal of Applied Genetics; 1997, 38, 2; 151-160
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Anatomical characteristics of hypocotyl of sugar beets different in sugar content
Autorzy:: Sliwinska, E
Dziamski, A.
Steen, P.
Powiązania:: https://bibliotekanauki.pl/articles/2048151.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cell size
plant genetics
vascular tissue
sucrose concentration
Beta vulgaris
root yield
genotype
sugar content
hybrid
tracheid
central core
xylem
hypocotyl
parenchyma cell
phloem
sugar-beet
Opis:: Six seedling hypocotyl anatomical characters of sugar beet diploid lines and triploid hybrids were measured. Root yield and sugar content of these lines and hybrids were evaluated in replicated field trials. Some of the studied hypocotyl characters: the diameter of the central core, the diameter of parenchymatic cells outside the central core and the width of xylem, correlated negatively with sugar content and positively with root yield. This suggests that these parameters can be used in preliminary selection of sugar-beet breeding material. Introducing such criteria into the breeding process could speed up the selection and reduce the number of expensive field trials.
Źródło:: Journal of Applied Genetics; 1995, 36, 3; 229-239
1234-1983
Pojawia się w:: Journal of Applied Genetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Stomata and ploidy level differentiation of plants obtained from Actinidia deliciosa var. deliciosa endosperm culture
Autorzy:: Kleszcz, I.
Sliwinska, E.
Popielarska-Konieczna, M.
Powiązania:: https://bibliotekanauki.pl/articles/81074.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
plant organism
Actinidia deliciosa var.deliciosa
proliferation
morphogenetic response
in vitro culture
ploidy level
differentiation
endosperm culture
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Micropropagation of Eryngium campestre L. via shoot culture provides valuable uniform plant material with enhanced content of phenolic acids and antimicrobial activity
Autorzy:: Kikowska, M.
Thiem, B.
Sliwinska, E.
Rewers, M.
Kowalczyk, M.
Stochmal, A.
Dlugaszewska, J.
Powiązania:: https://bibliotekanauki.pl/articles/19447.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:: An efficient micropropagation protocol for production of genetically uniform clones of Eryngium campestre L. was developed. To determine the effect of nutritional and hormonal factors on shoot and root development and bioactive compounds production, three variants of media differing in the content of macro- and micronutrients, as well as plant growth regulators of various types and concentrations were tested. The highest regeneration (100%), with over 13 shoots per explant, was induced on Murashige and Skoog (MS) medium with 1.0 mg lˉ¹ benzyladenine (BA) and 0.1 mg lˉ¹ indole-3-acetic acid (IAA). The in vitro derived shoots multiplied through axillary bud formation were rooted and transferred to an experimental plot with 78% frequency of survival. Flow cytometry showed no variation in nuclear DNA between the seedlings and micropropagated plants. Preliminary thin layer chromatography (TLC) analysis indicated that phenolic acids, saponins, flavonoids and acetylenes were present in plant biomass. Ultra high performance liquid chromatography (UHPLC) analysis revealed that shoots and roots from in vitro derived plants and root cultures maintained the ability to produce rosmarinic acid (RA), rosmarinic acid hexoside (RA-HEX) and chlorogenic acid (CGA). The highest phenolic acid content was detected in roots of in vitro regenerated plants. The extract from those roots expressed the highest inhibitory effect against bacteria Staphylococcus aureus, as well as dermatophytes Trichophyton mentagrophytes and T. rubrum.
Źródło:: Acta Biologica Cracoviensia. Series Botanica; 2016, 58, 1
0001-5296
Pojawia się w:: Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The Influence of Selected Risk Factors on the Hearing Threshold Level of Noise Exposed Employees
Autorzy:: Dudarewicz, A.
Toppila, E.
Pawlaczyk-Łuszczyńska, M.
Śliwińska-Kowalska, M.
Powiązania:: https://bibliotekanauki.pl/articles/177940.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: noise-induced hearing loss
risk factors
Opis:: The aim of the study was to evaluate the combined effect of noise exposure and additional risk factors on permanent hearing threshold shift. Three additional risk factors were: exposure to organic solvents, smoking and elevated blood pressure. The data on exposure and health status of employees were collected in 24 factories. The study group comprised of 3741 noise male exposed workers of: mean age 39§8 years, mean tenure 16§7 years and LEX;8h = 86 § 5 dB. For each subject, hearing level was measured with pure tone audiometry, blood pressure and noise exposure were assessed from the records of local occupational health care and obligatory noise measurements performed by employers. Smoking and solvent exposure were assessed with questionnaire. The study group was divided into subgroups with respect to the considered risk factors. In the analysis, the distribution of hearing level of each subgroup was compared to the predicted one which the standard calculation method described in ISO 1999:1990. For each of the considered risk factors, the difference between measured and calculated hearing level distribution was used to establish, by the least square method, a noise dose related correction square function for the standard method. The considered risk factors: solvent exposure, smoking and elevated blood pressure combined with noise exposure, may increase degree of hearing loss.
Źródło:: Archives of Acoustics; 2010, 35, 3; 371-382
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The Hearing Threshold of Employees Exposed to Noise Generated by the Low-Frequency Ultrasonic Welding Devices
Autorzy:: Dudarewicz, A.
Zaborowski, K.
Rutkowska-Kaczmarek, P.
Zamojska-Daniszewska, M.
Śliwińska-Kowalska, M.
Zamysłowska-Szmytke, E.
Pawlaczyk-Łuszczyńska, M.
Powiązania:: https://bibliotekanauki.pl/articles/178077.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: noise-induced hearing loss
noise
ultrasonic noise
occupational exposure
Opis:: The aim of the study was to assess the hearing threshold levels (HTLs) in employees exposed to noise generated by low-frequency ultrasonic technological equipment in comparison with the HTLs of workers exposed to audible noise at the similar A-weighted equivalent-continuous sound pressure level. The study includes measurements of ultrasonic and audible noise at workplaces and hearing tests, i.e. conventional pure-tone audiometry and extended high-frequency audiometry. The study group comprised 90 workers, aged 41.4 ± 10.0 years (mean±SD), exposed for 17.3 ± 9.8 years to noise generated by ultrasonic devices at mean daily noise exposure level (‹L_EX,8h›) of 80.6 ± 2.9 dB. The reference group consists of 156 subjects, exposed to industrial noise (without ultrasonic components) at similar A-weighted equivalent-continuous sound pressure level (‹L_EX,8h› = 81.8 ± 2.7 dB), adjusted according to age (39.8 ± 7.7 years), gender and job seniority (14.0 ± 7.0 years). This group was selected from database collected in the Nofer Institute of Occupational Medicine. Audiometric hearing threshold levels in the frequency range of 0.5–6 kHz were similar in both groups, but in the frequency range of 8–12.5 kHz they were higher in the group of employees exposed to ultrasonic noise. The findings suggest that differences in the hearing threshold (at high frequencies) in analyzed groups may be due to differences in spectral composition of noise and show the need to continue the undertaken studies.
Źródło:: Archives of Acoustics; 2017, 42, 2; 199-205
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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