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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

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

Project

<a href="/en/project/QK1920124" target="_blank" >QK1920124: Identification of early apricot dieback causes and its reduction in conditions of the Czech Republic.</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Horticultural Science

ISSN

1805-9333

e-ISSN

—

Volume of the periodical

50

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

175-188

UT code for WoS article

001091052100001

EID of the result in the Scopus database

2-s2.0-85173776589