@conference{
author = "Živanović, Kristina and Mijatović, Ljubica and Devetaković, Jovana",
year = "2023",
abstract = "Taxus baccata (L.) je retka i zaštićena vrsta u šumama Srbije. Obnavljanje Taxus baccata u šumama je prepušteno prirodi i ne postoje podaci o proizvodnji
šumskih sadnica ove vrste u našim šumskim rasadnicima. Razmnožavanje Taxus
baccata za potrebe proizvodnje ukrasnog sadnog materijala se uglavnom sprovodi vegetativnim putem (reznicama), a generativno razmnožavanje ove vrste je
zanemareno usled izrazito dormantnog semena. Problem dormantnosti semena
Taxus baccata je dobro dokumentovan u literaturi, a preporučeni metodi za otklanjanje dormantnosti su dugotrajni i zasnivaju se na primeni tople i hladne, suve
ili vlažne stratifikacije u različitim trajanjima. Pored dužine trajanja stratifikacije,
problem predstavlja i relativno mala klijavost nakon primene neke od ovih metoda. Sa ciljem da se dormantnost otkloni i izazove klijanje u što većem procentu u
ovom radu je testiran uticaj giberelinske kiseline (GA4/GA7) na klijanje semena
Taxus baccata. Seme koje je sakupljeno sa 10 parkovskih stabala je podvrgnuto
suvo-hladnoj stratifikaciji i hladno-vlažnoj stratifikaciji u trajanju od 16 nedelja.
Uzorak od po 200 semena je potopljen 24 časa u rastvor giberelinske kiseline (100
ppm, 300 ppm i 500 ppm) i vodonik-peroksida, dok je isti broj semena iz obe vrste stratifikata posejan bez potapanja. Ogled je izvršen u dva ponavljanja za svaku
vrstu stratifikata, a sproveden je u staklari Šumarskog fakulteta Univerziteta u Beogradu. Klijanje semena je zabeleženo u proleće naredne godine, i trajalo je 2
meseca (maj-jun 2023 godine). Najveća klijavost semena je zabeležena u tretmanu giberelinske kiseline u najvećoj testiranoj koncentraciji bez obzira na vrstu prethodne stratifikacije (suvo-hladna 22.5%; vlažno-hladna 22.75%, u poređenju sa
kontrolisanim 10,5% za obe stratifikacije)., Taxus baccata (L.) is a rare and protected species in the forests of Serbia. Taxus
baccata regeneration in forests is left to nature and there is no data on the production of forest seedlings of this species in our forest nurseries. Reproduction of
Taxus baccata for the purposes of production of decorative planting material is
mainly carried out vegetatively (by cuttings), and generative reproduction of this
species is neglected due to extremely dormant seeds. The problem of Taxus baccata
seed dormancy is well documented in the literature, and the recommended
methods for eliminating dormancy are long-term and based on the application
of hot and cold and dry or wet stratification for different durations. In addition to
the length of the stratification, the problem is also relatively low germination after
applying one of these methods. With the aim of removing dormancy and causing
germination in the highest possible percentage, this paper tested the influence of gibberellic acid (GA4/GA7) on the germination of Taxus baccata seeds. Seeds collected from 10 park trees were subjected to dry-cold stratification and cold-wet stratification for 16 weeks. A sample of 200 seeds each was immersed for 24 hours
in a solution of gibberellic acid (100 ppm, 300 ppm and 500 ppm) and hydrogen
peroxide, while the same number of seeds from both types of stratification was
sown without immersion. The experiment was carried out in two repetitions for
each type of stratification, and was conducted in the glasshouse of the Faculty of
Forestry, University of Belgrade. Seed germination was recorded in the spring of
the following year, and lasted for 2 months (May-June 2023). The highest seed
germination was recorded in the gibberellic acid treatment at the highest tested
concentration, regardless of the type of previous stratification (dry-cold 22.5%;
wet-cold 22.75%).",
publisher = "Društvo genetiĉara Srbije, Beograd, Serbian Genetic Society, Belgrade",
journal = "ZBORNIK APSTRAKATA X SIMPOZIJUMA DRUŠTVA SELEKCIONERA I SEMENARA REPUBLIKE SRBIJE i VII SIMPOZIJUMA SEKCIJE ZA OPLEMENJIVANJE ORGANIZAMA DRUŠTVA GENETIĈARA SRBIJE",
title = "GIBERELINSKA KISELINA KAO PREDSETVENI TRETMAN SEMENA TAXUS BACCATA, GIBBERELLIC ACID AS PRE-SOWING TREATMENT FOR TAXUS BACCATA SEEDS",
pages = "212-211",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_3152"
}
