Fenologija cvatnje lijeske sorata "Istarski duguljasti" i " Rimski"

undergraduate thesis

• Title (english): Phenology of flowering hazel varieties "Istarski duguljasti" and "Romische Zellernuss"
• Author: Tea Jurkin
• Mentor: Tomislav Jemrić (mentor)
• Committee member: Tomislav Jemrić (predsjednik povjerenstva)
• Committee member: Goran Fruk (član povjerenstva)
• Committee member: Đani Benčić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Pomology); Zagreb
• Defense date and country: 2023-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Lijeska je jednodomna biljka čija je istovremena cvatnja važna za oprašivanje i oplodnju. U radu je istražen utjecaj temperature na cvatnju i uspoređene su dvije sorte lijeske u blizini rijeke Bednje. Toplija klima na istraživanom području zaslužna je za pojavu protandrije koja se pojavila 19. studenog 2022. godine na sorti 'Rimski'. Srednja dnevna temperatura zraka na početku siječnja iznosila je 20,6˚C, a najniža temperatura iznosila je -4,8˚C. Analizom varijance utvrđena je statistički značajna razlika u fenofazi pune cvatnje za muške cvjetove između sorata 'Rimski' i 'Istarski duguljasti' te razlika između dugog i kratkog izbojka unutar svake sorte. Duljina muških resa na kratkom izbojku bila je veća, a ujedno sadrži i više polena koji je važan za oprašivanje lijeske. Razlika u broju ženskih cvjetova u punoj cvatnji postoji samo između sorata. Nakon provedenog istraživanja može se zaključiti da se obje sorte dobro preklapaju u cvatnji i da se mogu međusobno oprašiti.

Abstract (english)

Hazel is a monoecious plant and its simultaneous flowering is important for pollination and fertilization. This work was focused on the research of the influence of temperature on flowering and compared two varieties of hazel near the Bednja river. The warmer climate in the researched area is responsible for the appearance of protandry, which appeared on the hazel variety 'Romische Zellernuss' on November 19th, 2022. The average daily air temperature at the beginning of January was 20.6˚C, and the lowest temperature was -4.8˚C. The analysis of variance revealed a statistically significant difference in the phenophase of full flowering for male flowers between the varieties 'Romische Zellernuss' and 'Istarski duguljasti', as well as the difference between long and short shoots within each variety. The length of the male fringes on the short shoot was longer, and at the same time it contains more pollen, which is important for the pollination of the hazel. The difference in the number of female flowers in full bloom exists only between the varieties. After the conducted research, it can be concluded that there is a high degree of flowering overlap between the both varieties and that they can cross-pollinate.

• Keywords: lijeska; sorta; temperatura zraka; cvatnja; oprašivanje
• Keywords (english): hazel; variety; air temperature; flowering; pollination
• Language: croatian
• URN:NBN: urn:nbn:hr:204:009337
• Study programme: Title: Horticulture; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka hortikulture (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2024-09-24 11:13:57