Optimizacija razmnoževanja aktinidije (Actinidia deliciosa A.Chev.) sorte ‘Hayward’ s potaknjenci

Šinigoj, Filip (author), Osterc, Gregor (mentor)

Aktinidija (Actinidia deliciosa A.CHEV.) je dvodomna sadna vrsta, uvrščamo jo med lesne ovijalke. Pridelava se v svetu iz leta v leto povečuje, med sortami pa prednjači sorta 'Hayward'. Komercialno razmnoževanje temelji na potaknjencih, enoletnih poganjkih, ki jih odberemo z matičnih rastlin predvsem tekom rastne dobe. S poskusom želimo optimizirati postopek razmnoževanja lesnatih in zelenih potaknjencev v neogrevanem plastenjaku. Terminalne potaknjence smo odbrali iz dvanajst let starih rastlin v polni rodnosti v intenzivnem nasadu. Pri zelenih potaknjencih smo uporabili metodo visokotlačnega megljenja. Poganjke za potaknjence smo nabrali v dveh delih leta, vsakokrat v dveh terminih, pozimi leta 2021 in 2022 za lesnate in poleti leta 2022 za zelene potaknjence. Vsakokrat smo jih tretirali s hormonsko mešanico 0,005 % IBA in IAA ter kontrolo, poskus pa zastavili v štirih ponovitvah z dvajsetimi potaknjenci. Proučevali smo koreninjenje in razvoj koreninskega sistema, razvoj kalusa in vegetativni prirast v razmnoževalnem obdobju. Lesnati potaknjenci se niso koreninili, preživelo in kalusiralo je 74,4 % potaknjencev, njihova povprečna dolžina poganjkov je bila 5,7 ± 2,3 cm. Preživelo je 9,6 % zelenih potaknjencev, ti so imeli v povprečju 4,5 ± 0,5 korenin s povprečno dolžino 12,8 ± 5,7 cm. Hipotez zaradi slabega koreninjenja nismo potrdili.

• Language: Slovenian
• Keywords: Aktinidija, Actinidia deliciosa, 'Hayward', potaknjenci, vegetativno razmnoževanje, adventivne korenine
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: BF - Biotechnical Faculty
• Year: 2023
• PID: 20.500.12556/RUL-152372
• COBISS.SI-ID: 174497027
• Publication date in RUL: 23.11.2023

Secondary language

• Language: English
• Title: THE OPTIMIZATION OF THE VEGETATIVE PROPAGATION OF KIWIFRUIT (Actinidia deliciosa A.CHEV.) CULTIVAR ‘HAYWARD’

Abstract

Kiwifruit (Actinidia deliciosa A.CHEV.) is a dioecious fruit species, with a woody habit. Among the varieties, 'Hayward' variety is leading the way. Commercial propagation is based on cuttings, one-year-old shoots, which are taken from stock plants. We want to optimize the propagation process of hardwood and softwood cuttings in a zero energy polyhouse with this experiment. Terminal cuttings were selected from twelve-year-old plants in an intensive orchard. High-pressure fogging method was used for softwood cuttings. The propagation material was collected in two parts of the year, in two periods each time, in the winter of 2021 and 2022 for hardwood and in the summer of 2022 for softwood cuttings. They were treated with a hormonal mixture of 0,005 % IBA, IAA and control each time, and the experiment was carried out in four repetitions with twenty cuttings. Rooting and development of the root system, callus development and vegetative growth during the growth period were evaluated. Hardwood cuttings did not root, 74,4 % of them survived and callused with an average shoot length of 5,7 ± 2,3 cm. The survival rate of softwood cuttings was 9,6 %, with an average of 4,5 ± 0,5 roots and an average length of 12,8 ± 5,7 cm per cutting. The results cannot be statistically confirmed due to the general poor rooting performance. Due to poor rooting, the hypotheses were not confirmed.

• Keywords: kiwifruit, Actinidia deliciosa, 'Hayward', cuttings, vegetative propagation, adventitious root formation