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    Wyświetlanie 1-8 z 8
    Tytuł:
    Some Heteronema species [Euglenophyta] occurring in Leczna-Wlodawa Lakeland [Eastern Poland]
    Autorzy:
    Poniewozik, M
    Tematy:
    Euglenida
    Heteronema
    Heteronema cf.distigmoides
    Heteronema spirale
    Polska
    Leczna-Wlodawa Lakeland
    phytoplankton
    Heteronema acus
    taxonomy
    Heteronema nebulosum
    Euglenophyta
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/58667.pdf  Link otwiera się w nowym oknie
    Opis:
    One new Heteronema cf. distigmoides Christen and three rare taxa of H. acus (Ehrenberg) Stein, H. spirale KLEBS and H. nebulosum (Dujardin) Klebs were reported for the Polish flora. All of them were found in the mesotrophic Lake Piaseczno and in a small village pond in Kaniwola, in 2002. Both water reservoirs are situated on the Łęczna-Włodawa Lakeland (Eastern Poland). The above mentioned species are new to the flora of the Łęczna-Włodawa Lakeland, probably because of insufficient research, which was carried out on euglenophytes in this area previously. All the presented species are described thoroughly and illustrated in this paper.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pediastrum species [Hydrodictyaceae, Sphaeropleales] in phytoplankton of Sumin Lake [Leczna-Wlodawa Lakeland]
    Autorzy:
    Pasztaleniec, A
    Poniewozik, M.
    Tematy:
    water body
    Sphaeropleales
    Lake Sumin
    Leczna-Wlodawa Lakeland
    Hydrodictyaceae
    phytoplankton
    Pediastrum
    Chlorophyta
    Pokaż więcej
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/58416.pdf  Link otwiera się w nowym oknie
    Opis:
    During studies of phytoplankton in Sumin Lake (Łęczna-Włodawa Lakeland), conducted from May till September 2001 and 2002, 15 taxa of the genus Pediastrum (Hydrodictyaceae, Sphaeropleales) were found. Among them there were common species as Pediastrum boryanum, P. duplex, P. tetras and P. simplex, but also rare species as P. integrum or P. kawraiskyi. An especially interesting species was P. orientale, the taxon that until now has not been noted in phytoplankton of Polish water bodies. The paper gives descriptions of the genus Pediastrum coenobia and physico-chemical conditions of the habitat. The original documentation of Pediastrum taxa is added.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of nano-silver for disinfection of Pennisetum alopecuroides plant material for tissue culture
    Autorzy:
    Parzymies, M.
    Pudelska, K.
    Poniewozik, M.
    Tematy:
    Pennisetum alopecuroides
    grass species
    ornamental grass
    shoot
    explant
    plant material
    tissue culture
    plant growth regulator
    micropropagation
    contamination
    plant regeneration
    silver
    nanoparticle
    disinfection
    Pokaż więcej
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Powiązania:
    https://bibliotekanauki.pl/articles/12683367.pdf  Link otwiera się w nowym oknie
    Opis:
    Initiation of tissue culture of many plant species is a very difficult stage due to appearance of many contaminations. The other problem might be a choice of media for regeneration. Initiation of grass species tissue cultures are thought to be very difficult. Therefore, a research was undertaken to evaluate the use of nano-silver particles for plant material disinfection and to estimate a medium Pennisetum alopecuroides. The plant material were buds and nodal explants that were disinfected in 2% NaOCl for 30 min or 0.1% HgCl2 for 1 min. Half of the explants disinfected with NaOCl were soaked in 50, 100 or 250 mg·dm–3 Ag NPs for 1 hour. Explants not soaked in nano-silver were placed on media with Ag NPs at concentrations of 4, 8 or 16 mg·dm–3. An influence of growth regulators on Pennisetum alopecuroides was evaluated in vitro. Regenerated shoots were placed on MS media with: 3 mg·dm–3 BA + 0.3 mg·dm–3 IBA, 3 mg·dm–3 KIN + + 0.3 mg·dm–3 IAA, 1 mg·dm–3 BA + 0.1 mg·dm–3 IBA. It was observed that the use of nano-silver particles lowered the level of contamination. The best results were obtained when Ag NPs was used at concentration of 100–250 mg·dm–3 alone or as a supplementation of the media, at concentration of 4 mg·dm–3 for nodes and 16 mg·dm–3 for adventitious buds. The use of nodal explants allowed to obtain less contamination. Regeneration depended on a media content. The most regenerated shoots were obtained on the MS media supplemented with 1 mg·dm–3 BA and 0.1 mg·dm–3 IBA.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozmnażanie storczyków w kulturach tkankowych
    Propagation of orchids in tissue cultures
    Autorzy:
    Szot, P.
    Parzymies, M.
    Poniewozik, M.
    Tematy:
    rosliny ozdobne
    storczyki
    rozmnazanie roslin
    mikrorozmnazanie
    kultury tkankowe
    Pokaż więcej
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Powiązania:
    https://bibliotekanauki.pl/articles/2184896.pdf  Link otwiera się w nowym oknie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of growth regulators on dahlia propagation in tissue culture and acclimatization of plants in ex vitro conditions
    Autorzy:
    Marcinek, B.
    Parzymies, M.
    Poniewozik, M.
    Kozak, D.
    Durlak, W.
    Tematy:
    plant cultivation
    Dahlia
    Dahlia x cultorum
    dahlia
    ornamental plant
    flowering plant
    tuberous plant
    tuberous root
    plant acclimatization
    growth regulator
    cytokinin
    gibberellic acid
    micropropagation
    tissue culture
    ex vitro method
    microcutting
    Pokaż więcej
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Powiązania:
    https://bibliotekanauki.pl/articles/12307379.pdf  Link otwiera się w nowym oknie
    Opis:
    The aim of the work was to evaluate the influence of cytokinins on in vitro propagated dahlia and their consequent effect on acclimatization. Plant material consisted of shoot tips and nodes. Among the three cytokinins, benzyladenine, kinetin and 2-isopentenyl-adenine, only BA effectively stimulated the shoot multiplication from axiliary buds. The highest multiplication rate was obtained from nodes in the presence of 0.25– 0.5 mg·dm–3 BA. Higher concentrations shortened the internodes and decreased the leaf blades and growth of callus. 1 mg·dm–3 of KIN and 2iP positively influenced the shoot growth and size of leaves. Gibberellic acid (GA3) used with BA increased the number of auxillary shoots. The best quality shoots and the highest multiplication rate were obtained when 2 mg·dm–3 BA was used with 5 mg·dm–3 GA3. Cytokinins affected the rooting and acclimatization ex vitro. Dahlia shoots multiplicated in the presence of 1 mg·dm–3 KIN or 2iP rooted faster in the soil and 100% survived in field, while those from 1 mg·dm–3 BA media rooted slowly, had shorter shoots and only 60% of them survived. Plants bloomed after 11–12 weeks in the field. Dahlia plants that had been multiplicated in the presence of KIN had larger diameter and fresh weight in the field. BA and 2iP positively influenced the flower diameter, length of flower stalk and a number of the first-order shoots.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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