Ultrasonic spectroscopy allows a rapid determination of the relative water content at the turgor loss point: a comparison with pressure-volume curves in 13 woody species

Autor:	José Javier Peguero-Pina, Tomas Gomez Alvarez-Arenas, M.D. Fariñas, Domingo Sancho-Knapik, Eustaquio Gil-Pelegrín
Rok vydání:	2013
Předmět:	Pressure-volume curves Time Factors Physiology Turgor pressure Analytical chemistry Water Plant Science Wood Droughts Trees Plant Leaves Magnoliopsida Ultrasonic spectroscopy Inflection point Botany Linear Models Point (geometry) Water content Ultrasonography Mathematics
Zdroj:	Tree Physiology. 33:695-700
ISSN:	1758-4469 0829-318X
DOI:	10.1093/treephys/tpt052
Popis:	The turgor loss point (TLP), which is considered a threshold for many physiological processes, may be useful in plant-breeding programs or for the selection of reforestation species. Obtaining TLP through the standard pressure–volume (p–v) curve method in a large set of species is highly time-consuming and somewhat subjective. To solve this problem, we present an objective and a less time-consuming technique based on the leaf resonance able to calculate the relative water content (RWC) at TLP (RWCTLP). This method uses air-coupled broadband ultrasonic spectroscopy to obtain the sigmoidal relation between RWC and the standardized resonant frequency (f/fo). For the 13 species measured, the inflexion point of the RWC– f/fo relationship (RWCTLP o ff / ) was not statistically different from the value of RWC at the TLP obtained with the p–v curves (RWCTLP p–v).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0371c48fad1b007cf0ec8bab857defd3 https://doi.org/10.1093/treephys/tpt052 Zobrazit plný text záznamu Plný text ve formátu PDF