doktorska disertacija
Tina Hajdinjak (Author), Jerneja Jakopič (Mentor)

Abstract

V doktorski disertaciji smo preučevali metabolni in fiziološki odziv štirih sort ameriških borovnic (Vaccinium corymbosum L.) na spremenjene mikroklimatske razmere v različnih oblikah zavarovanega prostora. Spremljali smo vsebnost primarnih in sekundarnih metabolitov v plodovih rastlin v zavarovanem prostoru ter pod protitočno mrežo, ki so bile posajene v lonce in na greben. Mikroklima v zavarovanem prostoru pospeši zorenje plodov v primerjavi s protitočno mrežo, medtem ko so rastline pod protitočno mrežo intenzivneje rastle, imele večji pridelek in večjo vsebnost fenolnih spojin v plodovih. V loncih je bila temperatura substrata višja kot na grebenu, kar je povečalo temperaturna nihanja; to pomeni, da velikost loncev ni imela negativnega vpliva na merjene parametre. Na višjo temperaturo zraka v zavarovanem prostoru so se rastline odzvale na fiziološki ravni (neto fotosinteza, fluorescenca klorofila) in kemični sestavi listov (kloroplastni pigmenti, fenolne spojine). Enako je bilo opaziti pri rastlinah, ki so bile gojene pod različnimi fotoselektivnimi mrežami. Te so vplivale tudi na različno kemično sestavo plodov ob obiranju in različne obstojnosti plodov med skladiščenjem (vsebnost sladkorjev, organskih kislin, fenolnih in hlapnih spojin) med obravnavanji. Na plodovih sorte 'aurora' smo ugotovili, da je nedestruktivno merjenje absorbance klorofila učinkovita metoda določanja optimalne zrelosti plodov neposredno na rastlini.

Keywords

zavarovan prostor;mikroklima;fenolne spojine;neto fotosinteza;kloroplastni pigmenti;

Data

Language: Slovenian
Year of publishing:
Typology: 2.08 - Doctoral Dissertation
Organization: UL BF - Biotechnical Faculty
Publisher: [T. Smrke]
UDC: 581.1:634.735:631.344.5:547.56(043.3)
COBISS: 241291523 Link will open in a new window
Views: 143
Downloads: 43
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Metabolic response of blueberry (Vaccinium corymbosum L.) to production in various forms of protected area
Secondary abstract: In this doctoral dissertation, we examined the metabolic and physiological responses of four different cultivars of blueberries (Vaccinium corymbosum L.) to modified microclimatic conditions in various types of protected environments. We monitored the content of primary and secondary metabolites in fruit grown in a high tunnel and under a hail net on plants cultivated in pots and ridges. The microclimate in the high tunnel enhanced fruit ripening compared to the hail net, while plants under the hail net exhibited more intense growth, higher yields, and a greater content of phenolic compounds in the fruit. The pots had a higher substrate temperature than the reef, which increased the temperature fluctuations, meaning that the size of the pots did not have a negative effect on the measured parameters. In the high tunnels, plants responded to higher air temperatures at the physiological level (net photosynthesis, chlorophyll fluorescence) and in the biochemical profile of the leaves (chloroplast pigments, phenolic compounds). A similar effect was observed in plants growing under photoselective nets. The latter influenced the biochemical profile of the fruit at harvest and their performance during storage, affecting sugar, organic acid, phenolic, and volatile compound content among treatments. For the cultivar 'Aurora,' we concluded that the non-destructive measurement of chlorophyll absorbance is an effective method for assessing the optimal ripeness of the fruit directly on the plant.
Secondary keywords: protected area;microclimate;phenolic compounds;net photosynthesis;chloroplast pigments;
Type (COBISS): Doctoral dissertation
Study programme: 0
Thesis comment: Univ. v Ljubljani, Biotehniška fak.
Pages: 1 spletni vir (1 datoteka PDF (IX, 125 str.)
ID: 26719558