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Vpliv prekomernega gnojenja in slanih tal na fotosintetsko učinkovitost lončnice Tradescantia fluminensis = Influence of over-fertilization and salinity on photosynthetic efficiency of Tradescantia fluminensis : diplomsko deloVidic, MetkaDiplomsko delo obsega raziskavo, s katero smo želeli ugotoviti posledice povečane koncentracije soli v tleh in posledice prekomernega gnojenja na rastline. Raziskavo smo izvajali v laboratoriju ... Oddelka za biologijo Fakultete za naravoslovje in matematiko Univerze v Mariboru. Za proučevano vrsto smo izbrali vrsto Tradescantia fluminensis. Ker je fotosinteza eden pomembnejših procesov, ki poteka v rastlinah, in je v veliki meri odvisna od zunanjih dejavnikov, smo se odločili, da bomo posledice na rastlinah spremljali z merjenjem maksimalnega kvantnega izkoristka PS II in vsebnosti klorofila v listih (vrednosti SPAD). Meritve smo opravljali dnevno, in sicer med 5. 3. in 10. 4. 2012. Uporabili smo sodobne ekofiziološke naprave, in sicer smo merili maksimalni kvantni izkoristek PS II z napravo Handy PEA (Hansatech, Norfolk, Anglija), vrednosti SPAD smo merili z napravo SPAD - 502 (Konica Minolta, Osaka, Japonska). Ob teh meritvah smo tedensko spremljali tudi izbrane morfološke značilnosti proučevanih rastlin. Tako smo merili dolžino celotnega glavnega poganjka, dolžino zadnjega (najmlajšega) internodija, dolžino in širino prvega polno razvitega lista in šteli liste. Pri štetju listov smo razlikovali med zelenimi listi, listi s suho konico, listi s suhim robom in suhimi listi. V raziskavo smo vključili deset klonov rastline vrste Tradescantia fluminensis. Štiri rastline smo izpostavili povečanim koncentracijam soli v tleh, štiri smo izpostavili prekomernemu gnojenju, dve sta služili kot kontrolni rastlini. Z raziskavo smo ugotovili, da oba zunanja dejavnika (tako slanost kot prekomerno gnojenje) negativno vplivata na fotosintetsko učinkovitost rastlin, in s tem tudi na njihovo rast. Negativne posledice so se hitreje pokazale pri rastlinah, ki so bile izpostavljene slanosti.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Maribor : [M. Vidic], 2012Language - slovenianCOBISS.SI-ID - 19235336
Author
Vidic, Metka
Other authors
Šajna, Nina
Topics
Univerzitetna in visokošolska dela |
biologija |
pedologija |
tla |
gnojenje |
slana tla |
fotosinteza |
lončnice |
slanost |
vpliv |
stres |
klorofil |
fluorescenca |
morfologija |
diplomska dela
Library | Call number – location, accession no. ... | Copy status |
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Miklošič Library FPNM, Maribor | M DIPL 57/59 VIDIC M. Vpliv IN: 920120057 |
available - reading room |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Vidic, Metka | |
Šajna, Nina | 24674 |
Source: Personal bibliographies
and: SICRIS
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