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Frost hardiness of flower buds of 16 apricot cultivars during dormancy Cover

Frost hardiness of flower buds of 16 apricot cultivars during dormancy

Folia Horticulturae
Volume 36 (2024): Issue 1 (June 2024)
By: József L. Bakos,  Márta Ladányi and  László Szalay  
Open Access
|Apr 2024

Figures & Tables

Figure 1.

Apricot flower buds cut lengthwise for evaluation after freezing treatment: undamaged by frost (A, B) and damaged by frost (C, D).
Apricot flower buds cut lengthwise for evaluation after freezing treatment: undamaged by frost (A, B) and damaged by frost (C, D).

Figure 2.

Frost damage of flower buds for 16 apricot cultivars based on artificial freezing tests (October 2019).
Frost damage of flower buds for 16 apricot cultivars based on artificial freezing tests (October 2019).

Figure 3.

Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2019/2020.
Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2019/2020.

Figure 4.

Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2021/2022.
Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2021/2022.

Figure 5.

Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2022/2023.
Frost hardiness profiles of 16 apricot cultivars for the dormancy period of 2022/2023.

Figure 6.

Daily maximum and minimum temperatures during the three dormancy periods (A:2019/20; B:2021/22; C:2022/23) with the frost hardiness profile (LT50 values) of two cultivars: Sweet Red as one of the most frost sensitive and Harlayne as one of the most frost resistant cultivars.
Daily maximum and minimum temperatures during the three dormancy periods (A:2019/20; B:2021/22; C:2022/23) with the frost hardiness profile (LT50 values) of two cultivars: Sweet Red as one of the most frost sensitive and Harlayne as one of the most frost resistant cultivars.

Figure 7.

Results of cluster analysis for frost hardiness based on measured LT50 values for the dormancy periods of 2019/20 (A), 2021/22 (B), 2022/23 (C) and the three years together (D).
Results of cluster analysis for frost hardiness based on measured LT50 values for the dormancy periods of 2019/20 (A), 2021/22 (B), 2022/23 (C) and the three years together (D).

Classification of 16 apricot cultivars for their frost hardiness ability by hierarchical clustering with Wards method based on the measured LT50 values_

Cultivar2019/20202021/20222022/20233 yearsLegend
PrimayaG1G1G1G1G1—very frost sensitive
TsunamiG1G1G1G1
Sweet RedG1G1G1G1
AuroraG1G2G1G2G2—slightly frost sensitive
PinkcotG1G2G1G2
PetraG1G2G2G2
BhartG2G2G2G3G3—slightly frost resistant
GoldrichG2G2G2G3
BergarougeG3G2G2G3
Magyar kajszi C.235G2G3G3G3
HargrandG2G3G3G3
FarbalyG2G3G3G3
HarogemG3G3G3G3
KureziaG3G4G4G4G4—very frost resistant
Rózsakajszi C.1406G4G4G4G4
HarlayneG4G4G4G4
DOI: https://doi.org/10.2478/fhort-2024-0005 | Journal eISSN: 2083-5965 | Journal ISSN: 0867-1761
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Language: English
Page range: 81 - 93
Submitted on: Aug 30, 2023
Accepted on: Jan 31, 2024
Published on: Apr 28, 2024
Published by: Polish Society for Horticultural Sciences (PSHS)
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
Keywords:
artificial freezing tests,
dehardening,
hardening,
LT
Related subjects:
Life sciences,
Plant science,
Zoology,
Ecology,
Life sciences, other

© 2024 József L. Bakos, Márta Ladányi, László Szalay, published by Polish Society for Horticultural Sciences (PSHS)
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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