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Vpliv izvlečka orjaškega dežena na kalitev navadne redkvice in trstikaste bilnice
ID Bezeljak, Petra (Author), ID Dolenc Koce, Jasna (Mentor) More about this mentor... This link opens in a new window

URLURL - Presentation file, Visit http://pefprints.pef.uni-lj.si/4183/ This link opens in a new window

Abstract
Orjaški dežen (Heracleum mantegazzianum Sommier & Levier) je invazivna tujerodna vrsta, ki jo uvrščamo v družino kobulnic (Apiaceae). Je ena izmed bolj razširjenih in za okolje nevarnih tujerodnih vrst v Evropi in Severni Ameriki. V Sloveniji je v začetni fazi širjenja v (pol)naravna okolja. Tujerodne vrste so tako uspešne, ker imajo pred domorodnimi določene prednosti. Ena izmed njih je alelopatija, to je vpliv ene rastline na drugo preko delovanja sekundarnih metabolitov. Glavni cilj moje diplomske naloge je ugotoviti vpliv izvlečkov iz svežih in suhih listov orjaškega dežena na kalivost navadne redkvice in trstikaste bilnice. Pripravila sem vodne izvlečke 1, 5 in 10 % koncentracije svežih in posušenih listov orjaškega dežena in kontrolo (destilirano vodo) ter z njimi zalila semena navadne redkvice in trstikaste bilnice. Po enem tednu sem preštela število kalic, izmerila dolžino kalic in kalice stehtala. Iz dobljenih podatkov sem izračunala delež kalivosti, povprečno maso, dolžino kalic ter standardno deviacijo. Rezultate sem primerjala še s Studentovim t-testom. Rezultati so pokazali, da je navadna redkvica v primerjavi s trstikasto bilnico imela večji delež kalivosti in poslednično večjo maso in dolžino kalic. Izvleček suhih listov je imel večji vpliv na inhibicijo kalivosti in rasti navadne redkvice in trstikaste bilnice.

Language:Slovenian
Keywords:tujerodne invazivne vrste
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:PEF - Faculty of Education
Year:2016
PID:20.500.12556/RUL-87163 This link opens in a new window
COBISS.SI-ID:11343433 This link opens in a new window
Publication date in RUL:04.09.2017
Views:1206
Downloads:236
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Secondary language

Language:English
Title:The effect of Heraceleum mantegazzianum extract on germination of Raphanus sativus and Festuca arundinacea
Abstract:
Giant hogweed (Heracleum mantegazzianum Sommier & Levier) is an introduced invasive species from the Apiaceae family. It is one of the most widespread and environmentally harmful introduced species in Europe and North America. In Slovenia, it is in its first stages of spreading in (half)natural habitats. Introduced species have certain advantages over indigenous ones and are therefore more successful. One of these advantages in allelopathy, which is a phenomenon of one plant’s secondary metabolites on other plants. The main goal of my thesis was to observe effect of extract from fresh and dry leaves of giant hogweed on germination of radish and tall fescue. I prepared 1, 5 and 10 percent extractions from fresh and dry leaves. I used these extractions and distilled water to soak seeds of radish and tall fescue. After one week, I counted the number of sprouts, measured their length and weighed them. From the collected data, I calculated germination rate, average weight, length of sprouts and standard deviation. I also used student’s t-test on the data. The results showed higher germination rate in radish than in tall fescue, and consequently greater mass and length of sprouts. Dry leaves extraction showed higher inhibiting impact on germination rate and growth of radish and tall fescue.

Keywords:invasive alien species

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