diplomsko delo
Zala Indira Ficko Hašaj (Avtor), Nina Kacjan-Maršić (Mentor)

Povzetek

Kalice so nov trend v prehranski in kmetijski panogi in so lahko bogat vir vitaminov in drugih koristnih snovi za človekovo zdravje. Težava pri gojenju kalic nastane v zimskem času, ko naravna svetloba ne zadošča za uspešno rast in je zato potrebno dosvetljevanje. V nalogi smo preizkusili gojenje kalic modre in bele kolerabice v zimskem obdobju, pod HPS in LED lučmi. Poskus je potekal v treh terminih v zimskem času, prvi decembra 2017, drugi februarja in tretji marca 2018 v steklenjaku Biotehniške fakultete. Kalice smo gojili v šotnem substratu, v plastičnih banjicah (18,5 cm×13,5 cm). V posamezno banjico je bilo posejanih pribl. 600 semen. V vsakem terminu smo imeli 24 banjic, 12 pod LED (rdeče in modre diode) in 12 pod HPS lučjo. V šestih banjicah so bile kalice modre in v šestih kalice bele sorte kolerabice. Kalice smo gojili 7 – 12 dni. Temperatura je bila spremenljiva glede na vreme, višjo temperaturo pa smo v vseh terminih zabeležili pod HPS lučjo, saj le ta oddaja večje količine toplote, temperatura med osvetlitvama se je razlikovala za 1 – 1,4 °C. Jakost svetlobe je bila višja pod LED osvetlitvijo, kar je tudi vplivalo na rezultate. Vsaka banjica je predstavljala eno ponovitev. Po končanem poskusu smo prešteli vzklita semena v posamezni ponovitvi in izračunali odstotni delež kalivosti (%), izmerili višino 20 kalic (v cm), stehtali skupno maso kalic/ponovitev in po sušenju na 60 °C izračunali vsebnost suhe snovi. Opravili smo tudi spektrofotometrične meritve vsebnosti klorofila a, b, skupnih karotenoidov in antocianov. Ugotovili smo, da so imele kalice pod LED lučjo boljšo rast in dale večji pridelek: prvo obravnavanje: (9,27 g/m2 – modra kolerabica), bile so manj izdolžene (v povprečju 5,8 cm bela in 6,8 cm – modra kolerabica) in imele so večjo vsebnost barvil (klorofila a bela 0,128 µg/mm2; antocianov 0,127 µg/mm2 modra kolerabica) glede na HPS luč, kjer je bil pridelek manjši, višina kalic večja in vsebnost pigmentov manjša.

Ključne besede

kalice;kolerabica;LED svetilka;HPS svetilka;fotosinteza;barvila;osvetljevanje;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.11 - Diplomsko delo
Organizacija: UL BF - Biotehniška fakulteta
Založnik: [Z. I. Ficko Hašaj]
UDK: 635.125:581.13/.15:631.544.4:628.9.04(043.2)
COBISS: 9303673 Povezava se bo odprla v novem oknu
Št. ogledov: 531
Št. prenosov: 166
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Cultivation of white and blue kohlrabi microgreens (Brassica oleracea L. var. gongylodes f. alba and Brassica oleracea L. var. gongylodes f. rubra) during winter period under different supplemental irradiations
Sekundarni povzetek: Microgreens are a new trend in food and agricultural sectors. They are a functional food, which contain large amounts of beneficial substances that help maintain the health of a human body. Problems in the production of microgreens often occure during the winter period, where supplemental light is needed for their production. In this research we investigated the influence of HPS and LED supplemental lighting on growth, development and biochemical content of blue and green varieties of kohlrabi microgreens. The experiements were conducted in glasshouse of the Biotechnical Faculty, in three periods during winter, December, 2017, February and March 2018. Kohlrabi microgreens were cultivated in 24 containers, filled with peat substrate. Roughly 600 seeds were used per container. 12 containers were placed under LED and HPS light. In six containers blue kohlrabi and in other six green kohlrabi seeds. Temperatures were aproximately 1 – 1,4°C higher under HPS lighting. Light intensity was measured higher under LED lighting, which also influenced the results. After 7 to 12 days, microgreens were harvested and we measured the amount of germinated seeds, microgreens height, weight and dry mass. Microgreens samples for specrophotometric analysis of pigments were also taken. We analysed chlorophyll a and b, total carotenoids and antocyanins. On average, the LED supplemental light is better for microgreens growth than HPS light.The yield of blue kohlrabi microgreens, grown under LED light was 9.27 g/m2), and the microgreens height was 5.8 cm for white kohlrabi and 6,8 cm for blue kohlrabi and the content of chlorophyll a in white kohlrabi was 0,128 µg/mm2, kohlrabi microgreens (and the anthocyan in blue kholrabi: 0,1270 µg/mg2)
Sekundarne ključne besede: brassica oleracea var. gongylodes;supplemental light;pigment;
Vrsta dela (COBISS): Diplomsko delo/naloga
Študijski program: 0
Konec prepovedi (OpenAIRE): 1970-01-01
Komentar na gradivo: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Strani: IX, 37 f., [9] f. pril.
ID: 11227604