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Abstract:

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.

Registro:

Documento: Artículo
Título:Effects of desiccation on Euterpe edulis Martius seeds
Autor:Panza, V.; Láinez, V.; Maldonado, S.; Maroder, H.L.
Filiación:Instituto de Recursos Biológicos CIRN, INTA, Las Cabañas y Los Reseros s/n, B1712WAA, Hurlingham. Buenos Aires, Argentina
Departamento de Biodiversidad Y Biología Experimental, Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
Departamento de Ciencias Básicas, Universidad Nacional de Luján, Ruta 7 y 5, (6700). Luján, Provincia de Buenos Aires, Argentina
Departamento de Biodiversidad Y Biología Experimental, Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina
Palabras clave: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
Año:2008
Volumen:31
Número:3
Página de inicio:383
Página de fin:390
Título revista:Biocell
Título revista abreviado:Biocell
ISSN:03279545
CODEN:BOCEE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03279545_v31_n3_p383_Panza

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Citas:

---------- APA ----------
Panza, V., Láinez, V., Maldonado, S. & Maroder, H.L. (2008) . Effects of desiccation on Euterpe edulis Martius seeds. Biocell, 31(3), 383-390.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03279545_v31_n3_p383_Panza [ ]
---------- CHICAGO ----------
Panza, V., Láinez, V., Maldonado, S., Maroder, H.L. "Effects of desiccation on Euterpe edulis Martius seeds" . Biocell 31, no. 3 (2008) : 383-390.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03279545_v31_n3_p383_Panza [ ]
---------- MLA ----------
Panza, V., Láinez, V., Maldonado, S., Maroder, H.L. "Effects of desiccation on Euterpe edulis Martius seeds" . Biocell, vol. 31, no. 3, 2008, pp. 383-390.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03279545_v31_n3_p383_Panza [ ]
---------- VANCOUVER ----------
Panza, V., Láinez, V., Maldonado, S., Maroder, H.L. Effects of desiccation on Euterpe edulis Martius seeds. Biocell. 2008;31(3):383-390.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03279545_v31_n3_p383_Panza [ ]