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Ekofiziološki odzivi vrste Tradescantia fluminensis na sušo in pomanjkanje svetlobe = Ecophysiological responses of Tradescantia fluminensis to drought and low-light conditions : diplomsko deloŠerbinek, LeaV sklopu tega diplomskega dela smo izvajali eksperimente na vrsti tradeskancija (Tradescantia fluminensis) v laboratorijih oddelka za biologijo na Fakulteti za naravoslovje in matematiko v Mariboru. ... Eksperimentalno delo je potekalo od začetka marca do začetka aprila v letu 2012. Omenjeno vrsto smo izpostavili dvema stresnima dejavnikoma, suši in pomanjkanju svetlobe. V ta namen smo uporabili 4 vzorce za en stresni dejavnik in 4 za drugega ter ob tem uporabili še dva kontrolna vzorca. Skupaj smo tako imeli 10 vzorcev. Meritve, ki smo jih opravljali 30 dni, so zajemale fluorescenco zelenega barvila, ki smo jo merili z merilcem fluorescence klorofila Handy PEA (Hansatech), vsebnost zelenega barvila v listih, izmerjenih s pomočjo merilca vsebnosti klorofila SPAD - 502 (Minolta), odstotek vlage v tleh, pridobljenih z napravo za merjenje vlage HH2 (Delta - T). Merili smo prav tako dolžino poganjka, dolžino zadnjega internodija ter maksimalno širino in dolžino lista, na katerem smo opravljali meritve fluorescence. Tekom eksperimenta smo šteli tudi liste: vse liste na rastlini, zelene zdrave liste, liste s suhim robom in suho konico ter suhe liste. Na začetku izvajanja eksperimentov smo izmerili še svetlobne pogoje, v katerih smo imeli vzorce, ter temperaturo prostora. Bistvo oz. sklep eksperimentalnega dela je, da se je Tradescantia fluminensis odzivala na stresne dejavnike (pomanjkanje vode in svetlobe) ter tako izrazila fiziološke in morfološke spremembe. Naši rezultati so pokazali različne odgovore T. fluminensis na oba stresorja. Sušo tolerira bolje od teme. Prvi pridobljeni odgovor je bila fluorescenca klorofila, nato vrednosti SPAD in na koncu še morfometrične značilnosti. Rastline v suši so bile manjše z manjšimi listi, večjim številom poškodovanih listov in nižjimi vrednostmi SPAD. Rastline brez svetlobe so kazale hitre odgovore upadanja količnika Fv/Fm. Te imajo daljše korenine in liste ter propadejo hitreje kot rastline v suši.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Maribor : [L. Šerbinek], 2012Language - slovenianCOBISS.SI-ID - 19236872
Author
Šerbinek, Lea
Other authors
Šajna, Nina
Topics
Univerzitetna in visokošolska dela |
biologija |
ekologija |
fiziologija |
rastline |
svetloba |
pomanjkanje |
stres |
suša |
klorofil |
fluorescenca |
vlaga |
morfometrija |
diplomska dela
Library | Call number – location, accession no. ... | Copy status |
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Miklošič Library FPNM, Maribor | M DIPL 57/59 ŠERBINEK L. Ekofiziološki IN: 920120055 |
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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Šerbinek, Lea | |
Šajna, Nina | 24674 |
Source: Personal bibliographies
and: SICRIS
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