Alelopatsko djelovanje ekstrakta listova običnog oraha i nekih invazivnih biljnih vrsta na klijanje pšenice (Triticum aestivum L.) i gorušice (Sinapis alba L.)

Pavićević, Maša (2013) Alelopatsko djelovanje ekstrakta listova običnog oraha i nekih invazivnih biljnih vrsta na klijanje pšenice (Triticum aestivum L.) i gorušice (Sinapis alba L.). Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

The term allelopathy refers to positive or negative, direct or indirect effect of one plant on another through the production of chemicals that are emitted into the environment. The initial hypothesis is that invasive plants increase their own success in new environment by exuding (allelo)chemicals which directly or indirectly inhibit the growth of neighbouring plants. To check that hypothesis I made extracts of leaves of boxelder maple, tree of heaven, false indigo-bush, common walnut, japanese knotweed and black locust in three different concentrations. I soaked wheat and white mustard seeds in these extracts for one day after which I transferred those seeds into Petri dishes and wetted them with the same extracts. In most cases the extracts of leaves inhibited the germination and growth of the tested plants and the inhibitory effects increased proportionally with the concentration of extracts. The germination and growth of the tested plants were most inhibited by the extracts of leaves of black locust. In order to get more certain conclusions about the allelopathic effects of an invasive species, it is necessary to conduct the experiment in the conditions most similar to those in nature, using wild plant species as test organisms.

Item Type: Thesis (Diploma thesis)
Keywords: allelopathy, invasive plant species, allelochemicals, juglone, Juglans regia L., Sinapis alba L., Triticum aestivum L.
Supervisor: Jelaska, Sven
Date: 2013
Number of Pages: 33
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 13 May 2015 10:57
Last Modified: 13 May 2015 10:57
URI: http://digre.pmf.unizg.hr/id/eprint/3974

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