Optimum temperature and phenological stage for determining cellular membrane thermostability in corn and bean

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:11Z
Fecha de publicación2013-01-01
ResumenIdentification of plant tolerance to heat requires novel strategies for measuring plant responses to this stress. Leaf electrolyte leakage is an indirect method that can be utilized as selection criteria for heat tolerance in plants, but it has to be adapted to each species. The objectives of this study were to measure heat-induced leaf electrolyte leakage in corn and bean to determine heat tolerant genotypes, and also to establish the optimal developmental stage for use of electrolyte leakage as selection criteria. This study included two genotypes of corn (Zea mays L.), and other two of bean (Phaseolus vulgaris L.), measured during the vegetative and floral stages. Heat treatments included 40, 50, and 60 degrees C applied to leaf discs during 60 minutes. Electrolyte leakage, estimated as the relative percentage of damage to the cell membrane, was used as criteria for cellular membrane thermostability. Results showed that the greatest amount of membrane electrolyte leakage occurred during flowering for both corn and bean, and the amount of leakage correlated with the genotype tolerance to heat. The temperature which caused the greatest electrolyte leakage depended on the species, 50 degrees C for corn and 60 degrees C for bean. Our results indicate that use of membrane thermostability, measured as electrolyte leakage, is an effective criteria for identifying genotypes tolerant to heat damage during flowering in genetic improvement programs.es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4021
Idiomaeses_ES
EditorialFUNDACION ROMULO RAGGIOes_ES
RelaciónPhyton-International Journal of Experimental Botanyes_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuentePhyton-International Journal of Experimental Botany
Palabra claveZea mayses_ES
Palabra clavePhaseolus vulgarises_ES
Palabra claveHeat tolerancees_ES
Palabra claveCell membranees_ES
Palabra claveThermostabilityes_ES
Palabra clavePhenological stagees_ES
TítuloOptimum temperature and phenological stage for determining cellular membrane thermostability in corn and beanes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorCastro Nava, S.
AutorCastro Nava, S.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Rango de páginas249-254es_ES
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen82es_ES

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