| Autor: |
Ravlić, Jelena, Lisjak, Miroslav, Teklić, Tihana, Rebekić, Andrijana, Vinković, Tomislav |
| Přispěvatelé: |
Carović-Stanko, K, Širić, I. |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Popis: |
Apple crops prefer moderate temperatures along with medium to high humidity. Dry climate and long-term high temperatures during summer can negatively affect the synthesis of chloroplast pigments in the apple leaf, which negatively affects the assimilation processes. One of the defense strategies against heat stress is the synthesis and accumulation of free proline, which is an important osmoregulator. The aim of the research was to determine the content of free proline and chloroplast pigments in the leaves of thirty-three apple varieties grown at two climatically different localities in Croatia, Tenja and Donja Zelina. The leaves were sampled after a long-term hot period, at the end of June 2021. In average for all the examined apple varieties, the location significantly influenced the content of free proline, chlorophyll a, total chlorophylls and the ratio of total chlorophylls and carotenoids. A significant influence of the variety on the accumulation of proline and the content of carotenoids was determined, which points to the genetic specificity in the response to high temperatures. Future research that will link the physiological response of apple to heat stress with the pomological properties of the fruit, should help producers in choosing varieties which are more suitable for cultivation in particular climatic conditions. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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