Water relations and ion content of mandarin plants cv Fortune withina drought and recovery cycle of the fast fruit growth stage

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Published: Jul 4, 2012
Keywords:
citrus, mandarin, plant water relations, droughtstress, mineral content, ionsPalabras

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José M. Dell�??Amico Rodríguez
Instituto Nacional de Ciencias Agrícolas

Abstract

18-year-old mandarin plants cv Fortune weresubjected to a drought cycle during the fast fruit growth phaseuntil reaching a stem water potential (?stem) of -2,5 MPa atnoon. Irrigation water was characterized by a CE of 25ºC andCl- -1content ranging between 3,97-4,39 dS.m and 14-25 meq.L-1,respectively, and a pH of about 8,4. The sensibility to waterloss or gain in leaves, fruits and stems was showed throughdifferent specific rates and ?stem was the indicator wheredifferences were first detected in favour of well-watered plants.A good correlation was found between fruit water potential(?fruit), bark actual osmotic potential (?ORbark) and barkpressure potential (?Pbark). Favourable conditions of watersupply and transpiration propitiated greater Cl�??+ and Nacontents in leaves, bark and juice, since vesicles wereconsidered a poor drain of inorganic solutes and scarce massflow. The major Cl- contained in leaves, bark and juice withregard to Na+ are due to the retention of the latter one in thewoody part of roots and stem. Yield and crop quality were notnegatively affected by irrigation suppression in this stage.

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How to Cite
Dell�??Amico Rodríguez, J. M. (2012). Water relations and ion content of mandarin plants cv Fortune withina drought and recovery cycle of the fast fruit growth stage. Cultivos Tropicales, 32(1), 30–41. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/52
Issue
Vol. 32 No. 1 (2011)
Section
Original Article

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