Potassium availability affects drought responses in plants through several metabolic roles, among which stomatal regulation, cell growth and xylem hydraulics. Vitis vinifera L. is a highly valuable crop and several genotypes have been selected during its millennial cultivation. Varieties show differences in their adaptability to stress conditions, making them more or less suitable to certain climatic and edaphic conditions. The varieties cultivated in Sicily are characterized by high variability. We investigated the response of two Sicilian cultivars (Nero d'Avola and Catarratto) to potassium deficiency and drought stress. Two-year-old grafted plants were grown in agriperlite, with or without potassium in the fertigation solution, and subjected to moderate drought stress by suspending irrigation for 6-8 days. Potassium content of xylem sap, leaf and root tissues were measured with an ion-selective electrode. Changes in stomatal conductance, plant transpiration and hydraulic conductance were compared between genotypes and treatments, in order to gain information for the development of optimal fertigation practices and the selection of the most drought tolerant varieties.
Oddo, E., Abbate, L., Inzerillo, S., Calabrese, M., Carimi, F., Motisi, A., et al. (2014). Potassium deficiency and drought stress in grapevine cultivars. In XIII FISV Congress: program and abstracts. Pisa : Pisa university press.
Autori: | Oddo, E.; Abbate, L.; Inzerillo, S.; Calabrese, M.; Carimi, F.; Motisi, A.; Sajeva, M.; Nardin, A. | |
Titolo: | Potassium deficiency and drought stress in grapevine cultivars | |
Settore Scientifico Disciplinare: | Settore BIO/04 - Fisiologia Vegetale Settore BIO/03 - Botanica Ambientale E Applicata | |
Data di creazione: | 2014-09-26 | |
Nome del convegno: | Congresso della Federazione Italiana Scienze dellla Vita | |
Luogo del convegno: | Pisa, Italy | |
Anno del convegno: | 24-27 settembre 2014 | |
Numero del convegno: | XIII | |
Data di pubblicazione: | 2014 | |
Numero di pagine: | 1 | |
Citazione: | Oddo, E., Abbate, L., Inzerillo, S., Calabrese, M., Carimi, F., Motisi, A., et al. (2014). Potassium deficiency and drought stress in grapevine cultivars. In XIII FISV Congress: program and abstracts. Pisa : Pisa university press. | |
Tipologia: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) | |
Appare nelle tipologie: | 0 - Proceedings (TIPOLOGIA NON ATTIVA) |
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Abstract Pisa_2014_Oddo.pdf | Abstract del poster | N/A | Open Access Visualizza/Apri |