This preprint is under consideration at Theoretical and Applied Climatology. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
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Research Article
Ozkan Kaya
Erzincan Horticultural Research Institute
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1679-6125
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Sweet cherry (Prunus avium L.) is one of the economically important fruit crops worldwide. However, late spring frosts occurring in some years can significantly impact sweet cherry productivity through organ and tissue destruction caused by frost damage, and very little is known about frost tolerance or susceptibility of new cultivars. Differential thermal analysis (DTA) was, therefore, used to examine the exothermic characteristics (temperatures at which 50% of the flower buds were killed - mLTE values) of the flower buds belonging to members of the genus Prunus - 6 Prunus avium cultivars ('Noir de Guben', 'Bigarreau Gaucher', 'Merton Late', 'Merton Bigarreau', 'Van' and wild genotype). In the study, mLTE values of flowers of six cherry cultivars were determined at different floral bud developmental stages such as side green, green tip, open cluster, first white and full bloom under laboratory-based freeze assays for consecutive two years. The mLTE values of flower buds changed according to both different floral bud developmental stages and sweet cherry cultivars. In our findings, the mLTE values of flower buds in all cultivars generally occurred at higher temperatures in the open cluster stage, whereas the mLTE values of the flower buds in the first white stage occurred at lower temperatures, and therefore, these results are not only controversial in terms of previous frost tolerance studies, but also the first findings to be reported in literature. Considering the two-year average, the temperatures causing mLTE values for flower buds was -1.58 to -3.74°C at the side green stage, -0.94 to -3.51°C at the green tip stage, -0.41 to -1.96°C at the open cluster stage, -2.30 to -11.52°C at the first white stage and -2.37 to -9.80°C at the full bloom stage in the range of six cultivars. In laboratory-based freezing experiments, the 'Van' cultivar were least affected by low temperatures, followed by 'Bigarreau Gaucher' cultivar and wild genotype. 'Merton Late' cultivar, on the contrary, was the most sensitive cultivar to low temperatures, followed by 'Noir de Guben' and 'Merton Bigarreau'. These results can be valuable in predicting possible frost damage at different developmental stages of the flower buds in sweet cherry.
Keywords
Freezing, Frost susceptibility, Floral bud developmental stages, Late spring frosts
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This preprint is under consideration at Theoretical and Applied Climatology. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Ozkan Kaya
Erzincan Horticultural Research Institute
Corresponding Author
ORCiD: https://orcid.org/0000-0002-1679-6125
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 16 Nov, 2021
No community comments so far
Reviews received
Received 15 Nov, 2021
Reviewers invited
Invitations sent on 15 Nov, 2021
Editor assigned
On 03 Nov, 2021
First submitted
On 30 Oct, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Sweet cherry (Prunus avium L.) is one of the economically important fruit crops worldwide. However, late spring frosts occurring in some years can significantly impact sweet cherry productivity through organ and tissue destruction caused by frost damage, and very little is known about frost tolerance or susceptibility of new cultivars. Differential thermal analysis (DTA) was, therefore, used to examine the exothermic characteristics (temperatures at which 50% of the flower buds were killed - mLTE values) of the flower buds belonging to members of the genus Prunus - 6 Prunus avium cultivars ('Noir de Guben', 'Bigarreau Gaucher', 'Merton Late', 'Merton Bigarreau', 'Van' and wild genotype). In the study, mLTE values of flowers of six cherry cultivars were determined at different floral bud developmental stages such as side green, green tip, open cluster, first white and full bloom under laboratory-based freeze assays for consecutive two years. The mLTE values of flower buds changed according to both different floral bud developmental stages and sweet cherry cultivars. In our findings, the mLTE values of flower buds in all cultivars generally occurred at higher temperatures in the open cluster stage, whereas the mLTE values of the flower buds in the first white stage occurred at lower temperatures, and therefore, these results are not only controversial in terms of previous frost tolerance studies, but also the first findings to be reported in literature. Considering the two-year average, the temperatures causing mLTE values for flower buds was -1.58 to -3.74°C at the side green stage, -0.94 to -3.51°C at the green tip stage, -0.41 to -1.96°C at the open cluster stage, -2.30 to -11.52°C at the first white stage and -2.37 to -9.80°C at the full bloom stage in the range of six cultivars. In laboratory-based freezing experiments, the 'Van' cultivar were least affected by low temperatures, followed by 'Bigarreau Gaucher' cultivar and wild genotype. 'Merton Late' cultivar, on the contrary, was the most sensitive cultivar to low temperatures, followed by 'Noir de Guben' and 'Merton Bigarreau'. These results can be valuable in predicting possible frost damage at different developmental stages of the flower buds in sweet cherry.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
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