Effects of desiccation on Euterpe edulis Martius seeds

Information on desiccation sensitivity of Euterpe edulis seeds under two drying rates is presented. The sensitivity was studied during the course of germination and normal germination. The water content was evaluated for both seeds and embryos. Results showed the following: (a) For both drying treat...

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Autores principales:	Panza, V., Láinez, V., Maldonado, S., Maroder, H.L.
Formato:	JOUR
Materias:	Drying chamber dehydration Embryo desiccation sensitivity Euterpe edulis seed Recalcitrant seed Silica gel drying electrolyte plant DNA article cell nucleus cell vacuole chromatin conductance cytoplasm desiccation DNA damage Euterpe edulis germination nonhuman physiology plant plant seed water content
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_03279545_v31_n3_p383_Panza
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_03279545_v31_n3_p383_Panza
record_format	dspace
spelling	todo:paper_03279545_v31_n3_p383_Panza2023-10-03T15:25:15Z Effects of desiccation on Euterpe edulis Martius seeds Panza, V. Láinez, V. Maldonado, S. Maroder, H.L. Drying chamber dehydration Embryo desiccation sensitivity Euterpe edulis seed Recalcitrant seed Silica gel drying electrolyte plant DNA article cell nucleus cell vacuole chromatin conductance cytoplasm desiccation DNA damage Euterpe edulis germination nonhuman physiology plant plant seed water content Euterpe edulis Information on desiccation sensitivity of Euterpe edulis seeds under two drying rates is presented. The sensitivity was studied during the course of germination and normal germination. The water content was evaluated for both seeds and embryos. Results showed the following: (a) For both drying treatments and for both germination and normal germination, desiccation sensitivity values were higher for measurements based on the water content of the embryo than for those of the seed, (b) For both drying treatments, desiccation sensitivity were higher for normal germination than for germination based on both the embryo and seed water contents. (c) Under the slow drying treatment and for measurements based on the seed water content, critical water content was visible for normal germination but not for germination; (d) Critical water contents for germination and normal germination were more clearly established in the fast drying treatment than they were in the slow drying method based on both the embryo and seed water contents. Critical water contents were not associated with changes in electrolyte leakage, which suggests that conductivity is not a good indicator of physiological seed quality. From the beginning of both drying treatments, changes in nuclei and vacuoles were observed, but, when seed water content was reduced to below critical values, the cells became severely plasmolyzed, the vacuoles highly distorted, and the nuclei formed an almost homogeneous mass with the chromatin and the nucleoplasm, which suggests irreversible DNA damages. Fil:Láinez, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Maroder, H.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03279545_v31_n3_p383_Panza
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Drying chamber dehydration Embryo desiccation sensitivity Euterpe edulis seed Recalcitrant seed Silica gel drying electrolyte plant DNA article cell nucleus cell vacuole chromatin conductance cytoplasm desiccation DNA damage Euterpe edulis germination nonhuman physiology plant plant seed water content Euterpe edulis
spellingShingle	Drying chamber dehydration Embryo desiccation sensitivity Euterpe edulis seed Recalcitrant seed Silica gel drying electrolyte plant DNA article cell nucleus cell vacuole chromatin conductance cytoplasm desiccation DNA damage Euterpe edulis germination nonhuman physiology plant plant seed water content Euterpe edulis Panza, V. Láinez, V. Maldonado, S. Maroder, H.L. Effects of desiccation on Euterpe edulis Martius seeds
topic_facet	Drying chamber dehydration Embryo desiccation sensitivity Euterpe edulis seed Recalcitrant seed Silica gel drying electrolyte plant DNA article cell nucleus cell vacuole chromatin conductance cytoplasm desiccation DNA damage Euterpe edulis germination nonhuman physiology plant plant seed water content Euterpe edulis
description	Information on desiccation sensitivity of Euterpe edulis seeds under two drying rates is presented. The sensitivity was studied during the course of germination and normal germination. The water content was evaluated for both seeds and embryos. Results showed the following: (a) For both drying treatments and for both germination and normal germination, desiccation sensitivity values were higher for measurements based on the water content of the embryo than for those of the seed, (b) For both drying treatments, desiccation sensitivity were higher for normal germination than for germination based on both the embryo and seed water contents. (c) Under the slow drying treatment and for measurements based on the seed water content, critical water content was visible for normal germination but not for germination; (d) Critical water contents for germination and normal germination were more clearly established in the fast drying treatment than they were in the slow drying method based on both the embryo and seed water contents. Critical water contents were not associated with changes in electrolyte leakage, which suggests that conductivity is not a good indicator of physiological seed quality. From the beginning of both drying treatments, changes in nuclei and vacuoles were observed, but, when seed water content was reduced to below critical values, the cells became severely plasmolyzed, the vacuoles highly distorted, and the nuclei formed an almost homogeneous mass with the chromatin and the nucleoplasm, which suggests irreversible DNA damages.
format	JOUR
author	Panza, V. Láinez, V. Maldonado, S. Maroder, H.L.
author_facet	Panza, V. Láinez, V. Maldonado, S. Maroder, H.L.
author_sort	Panza, V.
title	Effects of desiccation on Euterpe edulis Martius seeds
title_short	Effects of desiccation on Euterpe edulis Martius seeds
title_full	Effects of desiccation on Euterpe edulis Martius seeds
title_fullStr	Effects of desiccation on Euterpe edulis Martius seeds
title_full_unstemmed	Effects of desiccation on Euterpe edulis Martius seeds
title_sort	effects of desiccation on euterpe edulis martius seeds
url	http://hdl.handle.net/20.500.12110/paper_03279545_v31_n3_p383_Panza
work_keys_str_mv	AT panzav effectsofdesiccationoneuterpeedulismartiusseeds AT lainezv effectsofdesiccationoneuterpeedulismartiusseeds AT maldonados effectsofdesiccationoneuterpeedulismartiusseeds AT maroderhl effectsofdesiccationoneuterpeedulismartiusseeds
_version_	1807323178206232576

Effects of desiccation on Euterpe edulis Martius seeds

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