LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR

Vista sencilla de ítem
dc.creatorFernando Guridi Izquierdo
dc.creatorAndrés Calderín García
dc.creatorRicardo L. Louro Berbara
dc.creatorDariellys Martínez Balmori
dc.creatorMayelín Rosquete Bassó
dc.date2017
dc.date.accessioned2026-07-07T04:24:25Z
dc.descriptionThe humic acids (HA) from two different vermicompost were extracted, isolated, purified and partially characterized, to evaluate their possible protection in rice ( Oryza sativa L.) plants against an hydric stress. Differences in elemental composition, as the coagulation threshold value and E 4 /E 6 relation in their UV-Vis spectra were found. Two concentrations (40 and 60 mg L -1 ) of both HA were included in the nutritive solutions for rice plants in controlled conditions. It was verified that the previous treatment with the HA during six days stimulated the root biomass production. Later the HA were excluded and was an hydric deficit induced by adding polietilenglicol (PEG-6000) in the initially treated plants and in a group of those used as control. After 96 hours of this final condition the net radical biomass, the photosynthetic pigments content and the root membrane permeability were evaluated. In the plants previously treated with HA (at the concentration 60 mg HA L -1 ), the root membrane permeability, the net radical biomass production and the “a” chlorophyll content had no differences when compared with those without stress. It was concluded that the previous treatment with the HA protected the rice plants against a posterior hydric stress that was induced.
dc.formatapplication/pdf
dc.identifier1819-4087
dc.identifierhttps://www.redalyc.org/articulo.oa?id=193252701007
dc.identifierhttps://www.redalyc.org/journal/1932/193252701007/
dc.identifierhttps://www.redalyc.org/journal/1932/193252701007/html/
dc.identifierhttps://www.redalyc.org/journal/1932/193252701007/193252701007.epub
dc.identifierhttps://www.redalyc.org/journal/1932/193252701007/movil
dc.identifier.urihttp://hdl.handle.net/123456789/460505
dc.languagees
dc.publisherInstituto Nacional de Ciencias Agrícolas
dc.relationhttp://www.redalyc.org/revista.oa?id=1932
dc.rightsCultivos Tropicales
dc.sourceCultivos Tropicales (Cuba) Num.2 Vol.38
dc.subjectAgrociencias
dc.titleLOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR
dc.typeartículo científico

Archivos

Colecciones

Cultivos Tropicales - Instituto Nacional de Ciencias Agrícolas