Utjecaj niskih temperatura na klijavost korovne vrste Ambrosia artemisiifolia L.

master's thesis

• Title (english): Influence of lower temperature on germination of the weed species Ambrosia artemisiifolia L.
• Author: Nika Sveticki
• Mentor: Maja Šćepanović (mentor)
• Committee member: Maja Šćepanović (predsjednik povjerenstva)
• Committee member: Klara Barić (član povjerenstva)
• Committee member: Boris Lazarević (član povjerenstva)
• Committee member: Valentina Šoštarčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Herbology); Zagreb
• Defense date and country: 2018-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Klijanje korovne vrste Ambrosia artemisiifolia L. ovisi o mnogim čimbenicima. Temperatura je najznačajniji čimbenik klijanja. Cilj ovog diplomskog rada bio je utvrditi klijavost i dinamiku klijanja ambrozije pri temperaturama nižim od 12 °C. Sjeme je sakupljeno u Jastrebarskom u listopadu 2014. Utvrđivana je klijavost na šest konstantnih temperatura: 1 °C, 3 °C, 6 °C, 9 °C, 12 °C i 25 °C (kontrola) s fotoperiodom od 12 h dan i 12 h noć. Najveći postotak klijavosti (59,6 %), utvrđen je kod najniže istraživane temperature (1 ˚C), dok je najmanji postotak klijavosti (40,4 %) utvrđen na temperaturi od 6 ˚C. Najbrže početno klijanje sjemena (t10) ostvareno je za 15 dana pri temperaturi od 12 °C, dok je najsporije početno klijanje, za koju je bilo potrebno 84 dana, utvrđeno pri 1 °C. Najbrže srednje (t50) i završno klijanje (t90) ostvareno je pri 12 °C (46 dana), 9 °C (42 dana) i 6 °C (46 dana). Najsporije srednje i završno klijanje ostvareno je pri 1°C, a trajalo je od 120 do 173 dana.

Abstract (english)

Germination of Ambrosia artemisiifolila L. depends on many factors, and one of the most significant is temperature. The aim of this research was to determine germination and germination dynamics of seeds of Ambrosia artemisiifolia at the temperatures lower than 12 °C. Seeds were collected in Jastrebarsko in October 2014. Germination was recorded at six constant temperature: 1 °C, 3 °C, 6 °C, 9 °C, 12 °C and 25°C (control) under photoperiod of 12 h light and 12 h dark. The highest percentage of germination (59.6 %) was found at the lowest temperature of 1 °C, while the smallest percentage (40.4 %) was determined under temperature of 6 °C. The fastest initial germination (t10) was achieved in 15 days at 12 °C, while the slowest initial germination was determined in 84 days at 1 °C. The fastest medium (t50) and final (t90) germination was at 12 °C (46 days), 9 °C (42 days) and 6 °C (46 days). The slowest medium and final germination was at 1 °C and it lasted from 120 to 173 days.

• Keywords: ambrozija; sjeme; klijavost; dinamika klijanja; temperature
• Keywords (english): common ragweed; seeds; germination; germination dynamic; temperatures
• Language: croatian
• URN:NBN: urn:nbn:hr:204:196207
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-10-29 13:25:38