Loading content, please wait..
loading..
Logo
Version 3.18
or
Publication Type J
Authors Munoz-Rodriguez, A. F., P. Rodriguez-Rubio, F. J. J. Nieva, F. Fernandez-Illescas, E. Sanchez-Gullon, J. M. Soto, V. Hermoso-Lopez and B. Marquez-Garcia
Title THE IMPORTANCE OF BRACTEOLES IN ENSURING Atriplex halimus GERMINATION UNDER OPTIMAL CONDITIONS
Source Fresenius Environmental Bulletin
Author Keywords Chenopodiaceae marshes salt sodium chloride salsola-vermiculata seed-germination chenopodiaceae temperature salinity growth light
Abstract Atriplex halimus L. is a native halo-nitrophilous scrub that grows in salt-marsh environments and saline soils of the Mediterranean basin. The presence of bracteoles did not change the germination rate of seeds and fruits (seeds with bracteoles) in water, although bracteoles did slow down the process, from 2.5 to 5.7 days to reach the 50% of the final germination in seeds and fruits, respectively. Bracteoles prevented germination NaCl solutions greater than 0.3M. The seeds without bracteoles germinated at concentrations higher than 0.3M NaCl, but had smaller cotyledons than seeds germinated in water (3.1 and 5.6 mm, respectively), and all the roots had necrotic zones. The results showed that bracteoles play an important role in preventing seeds from germinating in NaCl concentrations higher than 0.3M, ensuring that they remained dormant and only germinated when freshwater was available. The recovery experiments showed that the seeds from the fruits that did not germinate in salt were not unviable, but remained dormant, awaiting the proper conditions to germinate. In the presence of water, the final germination was higher than 95%, and there was little necrosis found in the roots. The results showed how the presence of bracteoles prevented germination under unfavourable conditions for plant development.
Author Address [Munoz-Rodriguez, Adolfo F.; Nieva, Francisco J. J.; Fernandez-Illescas, Francisca; Soto, Jose M.; Marquez-Garcia, Belen] Univ Huelva, Dept Biol Ambiental & Salud Publ, Huelva 21071, Spain. [Rodriguez-Rubio, Pilar] Univ Huelva, Dpto Quim & Ciencia Mat Prof Carlos Vilches, Huelva 21071, Spain. [Sanchez-Gullon, Enrique] Agencia Medio Ambiente, Paraje Nat Marismas Odie, Junta De Andalu, Spain. [Hermoso-Lopez, Virgilio] Griffith Univ, Trop Rivers & Coastal Knowledge Commonwealth Envi, Griffith, Qld 4411, Australia. [Hermoso-Lopez, Virgilio] Griffith Univ, Australian Rivers Inst, Griffith, Qld 4411, Australia. Munoz-Rodriguez, AF (reprint author), Univ Huelva, Dept Biol Ambiental & Salud Publ, Huelva 21071, Spain. adolfo.munoz@dbasp.uhu.es
ISSN 1018-4619
ISBN 1018-4619
29-Character Source Abbreviation Fresenius Environ. Bull.
Year Published 2012
Volume 21
Issue 11C
Beginning Page 3521-3526
Unique Article Identifier WOS:000313458800010
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed