| Autor: |
Atagul, Omer, Calle, Alejandro, Demirel, Gizem, Lawton, John M., Bridges, William C., Gasic, Ksenija |
| Rok vydání: |
2022 |
| Předmět: |
|
| DOI: |
10.5281/zenodo.6384717 |
| Popis: |
In this article, heat requirement diversity in a large set of U.S. peach germplasm was presented with a goal to determine the best approach for estimating this trait and if observed diversity could be used in breeding to counter climate change. Peach bloom date is determined by the dynamic relationship of temperature requirements, from the sequential fulfillment of chill requirement and heat requirement. However, among the three traits, heat requirement is the least investigated with genetic variability in peach germplasm, and interaction between heat requirement, chill requirement, and bloom date is still mostly unknown. A few previous works have estimated heat requirement in a small number of peach cultivars/accessions or for germplasm specific to certain region in the world. In this study we report heat requirement for 136 peach cultivars representing important cultivars for breeding and commercial production in the United States and with relevance to breeding programs in the world. Additionally, we investigated effect of different base temperature from reference that assumes all trees have the same base temperature, and compared differences in estimated heat requirement between the arbitrary and actual point of chilling satisfaction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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