Fecha/hora: 16/05/2024 21:44:42

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	25/09/2016	
Fecha de la última actualización: 	25/09/2016	
Autoria: 	OTERO, A.; GOÑI, C.; SYVERTSEN, J.P.	
Afiliación: 	ALVARO RICARDO OTERO CAMA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARMEN TERESITA GOÑI ALTUNA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JAMES P. SYVERTSEN, Institute of Food and Agricultural Science (IFAS), Citrus Research and Education Center (CREC), University of Florida.	
Título: 	Flooding and soil temperature affect water relations and photosynthesis of citrus rootstock leaves.	
Año de publicación: 	2015	
Fuente/Imprenta: 	Acta Horticulturae, 2015, no.1065, p. 1399-1406. [Conference Paper]	
ISBN: 	978-94-62610-53-8	
ISSN: 	0567-7572	
DOI: 	10.17660/ActaHortic.2015.1065.177	
Idioma: 	Inglés	
Notas: 	Proc. XII International Citrus Congress - International Society of Citriculture. Eds. B. Sabater-Muñoz, P. Moreno, L. Peña, L. Navarro (3 vols.)	
Contenido: 	ABSTRACT.

We evaluated the effects of the soil temperature (15, 25 and 35°C) and soil anoxia from flooding for 20 days on citrus rootstock seedlings of CT33 trifoliate, Carrizo citrange and Troyer citrange along with Tucuman, Pomeroy and Rubidoux trifoliates in a greenhouse. Flooding had no effect on shoot water potential (&#936;s) at 25°C but at 15°C and 35°C, there were differences from non-flooded trees. Carrizo and Troyer had higher &#936;s than CT33, and Tucuman had the highest &#936;s among the trifoliates. Soil temperature was more important than flooding in determining plant water relations. At 35°C, ACO2 was reduced up to 14% of non-flooded plants in 4 days, particularly in CT33. In flooded seedlings, across the three genotypes, the decrease of Fv/Fm was highest at 35°C. Troyer rootstock maintained lower ACO2 at 35°C Based on leaf net gas exchange, chlorophyll fluorescence and water relations,
above optimal soil temperature accelerates seedling deterioration. CT33 was less tolerant than Carrizo and Troyer at 35°C, whereas Tucuman, Pomeroy and Rubidoux had similar tolerance to anoxia regardless of soil temperature.	
Palabras-Clave: 	ABIOTIC STRESSES; ANOXIA; CITRUS ROOTSTOCK; PHOTOSYNTHESIS; TEMPERATURE.	
Thesagro: 	CITRUS.	
Categoría del tema: 	--	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (101144-1) - PXI - AP - DD -  -  -  - DIS