Evaluation of plant growth regulators for control of dormancy in a apricot (Prunus armeniaca L.)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25271121%3A_____%2F23%3AN0000137" target="_blank" >RIV/25271121:_____/23:N0000137 - isvavai.cz</a>

Výsledek na webu

<a href="https://hortsci.agriculturejournals.cz/artkey/hor-202303-0001_evaluation-of-plant-growth-regulators-for-control-of-dormancy-in-apricot-prunus-armeniaca-l.php" target="_blank" >https://hortsci.agriculturejournals.cz/artkey/hor-202303-0001_evaluation-of-plant-growth-regulators-for-control-of-dormancy-in-apricot-prunus-armeniaca-l.php</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/135/2022-HORTSCI" target="_blank" >10.17221/135/2022-HORTSCI</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of plant growth regulators for control of dormancy in a apricot (Prunus armeniaca L.)

Popis výsledku v původním jazyce

In an environment where fruit production is increasingly affected by unpredictable weather patterns, it is important to look for ways to minimise the impact of climate change on production. Under Central European conditions, a limiting factor for apricot (P. armeniaca L.) growing in certain years is the occurrence of late spring frosts. One measure to eliminate their impact is to delay the actual flowering of the trees. This can be done by breeding or just by applying various plant growth regulators (PGRs). According to our results the varieties with a long dormancy period in the conditions of the Czech Republic are ‘Velika Luka’ (dormancy break 79 days from the beginning of December), then ‘Bai Gon’ with the same values, ‘Chuang zhi hong’ (dormancy break 73 days from the beginning of December) and hybrid form Lednice ‘Pozdně kvetoucí’, which had an average dormancy break 70 days from the beginning of December, even though in most years in field conditions it often blooms as one of the last genotypes. Next, we tested the effect of 6 active substances in 16 different concentrations on their ability to delay flowering. The results show that the application of Ethrel-based mixtures (concentrations of 0.05 and 0.5%) had the greatest influence, delaying flowering by up to 3–5 days, but also had the most destructive effect on tree health. The application of the commercial product Rhodofix (NAA-1-Naphthaleneacetic acid (NAA)–0.3%) and the application of a proprietary mixture based on NAA 1.0% did not have a very significant effect, with a delay in flowering of just 2 to 3 days. One interesting finding was that the application of the above products had a statistically significant effect on the ripening date of apricot fruit, with a difference of up to 4 days. Based on the results, the application of PGRs can affect the flowering time, but not in a completely fundamental way. Thus, protection against late spring frosts is therefore dependent on a combination of several approaches.

Název v anglickém jazyce

Evaluation of plant growth regulators for control of dormancy in a apricot (Prunus armeniaca L.)

Popis výsledku anglicky

In an environment where fruit production is increasingly affected by unpredictable weather patterns, it is important to look for ways to minimise the impact of climate change on production. Under Central European conditions, a limiting factor for apricot (P. armeniaca L.) growing in certain years is the occurrence of late spring frosts. One measure to eliminate their impact is to delay the actual flowering of the trees. This can be done by breeding or just by applying various plant growth regulators (PGRs). According to our results the varieties with a long dormancy period in the conditions of the Czech Republic are ‘Velika Luka’ (dormancy break 79 days from the beginning of December), then ‘Bai Gon’ with the same values, ‘Chuang zhi hong’ (dormancy break 73 days from the beginning of December) and hybrid form Lednice ‘Pozdně kvetoucí’, which had an average dormancy break 70 days from the beginning of December, even though in most years in field conditions it often blooms as one of the last genotypes. Next, we tested the effect of 6 active substances in 16 different concentrations on their ability to delay flowering. The results show that the application of Ethrel-based mixtures (concentrations of 0.05 and 0.5%) had the greatest influence, delaying flowering by up to 3–5 days, but also had the most destructive effect on tree health. The application of the commercial product Rhodofix (NAA-1-Naphthaleneacetic acid (NAA)–0.3%) and the application of a proprietary mixture based on NAA 1.0% did not have a very significant effect, with a delay in flowering of just 2 to 3 days. One interesting finding was that the application of the above products had a statistically significant effect on the ripening date of apricot fruit, with a difference of up to 4 days. Based on the results, the application of PGRs can affect the flowering time, but not in a completely fundamental way. Thus, protection against late spring frosts is therefore dependent on a combination of several approaches.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

<a href="/cs/project/QK1920124" target="_blank" >QK1920124: Identifikace příčin předčasného odumírání a jeho omezení při pěstování meruněk v ČR.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Horticultural Science

ISSN

1805-9333

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

14

Strana od-do

175-188

Kód UT WoS článku

001091052100001

EID výsledku v databázi Scopus

2-s2.0-85173776589