diplomsko delo
Nina Hanžič (Author), Gregor Osterc (Mentor)

Abstract

(Pelargonium sp.) so priljubljene balkonske okrasne rastline iz družine krvomočničevk (Geraniaceae). Najbolj razširjen način razmnoževanja pelargonij je s potaknjenci. Pri razmnoževanju pelargonij poznamo tri tipe potaknjencev: neukoreninjene potaknjence, ukoreninjene potaknjence in potaknjence s kalusom ('Ready-Rooter' potaknjenci). Z lastno proizvodnjo 'Ready-Rooter' potaknjencev bi se lahko pocenila proizvodnja sadik pelargonij. 'Ready-Rooter' potaknjenci se hitreje ukoreninjajo in na ta način pridemo prej do končnih sadik, kar zmanjša stroške proizvodnje. Pri poskusu smo uporabili potaknjence dveh sort pelargonij, 'Tango Dark Red' in 'Feuer Cascade'. Te potaknjence smo leta 2019 potikali v plošče napolnjene s kremenčevim peskom. Po dveh tednih smo potaknjence ponovno potaknili v plošče s paper-poti napolnjenimi s substratom. Ker se poskus s kremenčevim peskom ni najbolje obnesel, smo naslednje leto, leta 2020 poskus prilagodili. Potaknjence enakih sort smo tokrat namesto v kremenčev pesek potikali v plošče s paper-poti, napolnjenimi s substratom za potikanje. Potik smo izvedli dvakrat. Ugotovili smo, da so se bolje koreninili potaknjenci iz prvega termina potika, kjer je bilo 21 % potaknjencev ocenjenih s 5. Po enem tednu od potika so imeli potaknjenci že viden kalus, po dveh tednih pa že vidne korenine, nekatere so bile vidne tudi na paper-potih. Dolžina novih poganjkov je bila izmerjena 14 dni po potiku. Merili smo vsoto dolžin novih poganjkov na enem potaknjencu in število novih poganjkov. Pri sorti 'Tango Dark Red' je bila maksimalna dolžina poganjkov 20 cm in število poganjkov 6, pri sorti 'Feuer Cascade' pa maksimalna dolžina 10 cm in 4 poganjki. Tako pri koreninjenju kot pri novih poganjkih so se najboljši rezultati pokazali pri sorti 'Tango Dark Red'. Ugotovili smo, da je ta sorta primernejša za proizvodno 'Ready- Rooter' potaknjencev kot sorta 'Feuer Cascade'.

Keywords

pelargonije;potaknjenci;kalus;vegetativno razmnoževanje;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [N. Hanžič]
UDC: 635.9:582.752.3:631.532(043.2)
COBISS: 29471491 Link will open in a new window
Views: 518
Downloads: 111
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: Production optimization of callus cuttings of pelargoniums (Pelargonium sp.)
Secondary abstract: Pelargoniums (Pelargonium sp.) are popular balcony ornamental plants from the Geraniaceae family. The most common method of propagation of pelargoniums is propagation by cuttings. There are three types of cuttings in the propagation of pelargoniums: unrooted cuttings, rooted cuttings and, callus cuttings ('Ready-Rooter' cuttings). Own production of 'Ready-Rooter' cuttings could reduce the price of production of geranium seedlings. 'Ready-Rooter' cuttings root faster and this way we get to the final seedlings sooner, which makes production cheaper. In the experiment, we used cuttings of two varieties of pelargoniums, ‘Tango Dark Red’ and ‘Feuer Cascade’. These cuttings were pushed into slabs filled with quartz sand. After two weeks, the cuttings were transplanted into plates with paper-pots filled with substrate. Since the experiment with quartz sand was not the best, we adjusted the experiment the following year. This time, instead of quartz sand, cuttings of the same varieties were pushed into plates with paper-pots filled with the substrate for pushing. We performed the stimulus twice. We noticed that the cuttings from the first term of the shoot rooted better, with 21 % of the cuttings rated 5. After one week, the cuttings already had visible callus, and after two weeks, the roots were also visible, some of which were visible on the paper-pots. The length of the new shoots was measured 14 days after the shoot. We measured the sum of the lengths of new shoots on one cutting and the number of new shoots. For the 'Tango Dark Red' variety, the maximum shoot length was 20 cm and the number of shoots was 6, and for the 'Feuer Cascade' variety, the maximum length was 10 cm and 4 shoots. Both in rooting and in new shoots, the best results were shown in the variety 'Tango Dark Red'. We found that this variety is more suitable for the production of 'Ready-Rooter' cuttings than the 'Feuer Cascade' variety.
Secondary keywords: pelargoniums;cuttings;callus;vegetative propagation;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za agronomijo
Pages: X, 40 f.
ID: 12038914