LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR
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| Natura: | Artículo científico |
| Lingua: | es |
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Instituto Nacional de Ciencias Agrícolas
2017
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| _version_ | 1876446960534159360 |
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| author | Fernando Guridi Izquierdo |
| author_facet | Fernando Guridi Izquierdo |
| contents | LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR Fernando Guridi Izquierdo Andrés Calderín García Ricardo L. Louro Berbara Dariellys Martínez Balmori Mayelín Rosquete Bassó Agrociencias permeability Radical biomass photosynthetic pigments biological productivity The 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. 2017 artículo científico 1819-4087 https://www.redalyc.org/articulo.oa?id=193252701007 https://www.redalyc.org/journal/1932/193252701007/ https://www.redalyc.org/journal/1932/193252701007/html/ https://www.redalyc.org/journal/1932/193252701007/193252701007.epub https://www.redalyc.org/journal/1932/193252701007/movil es http://www.redalyc.org/revista.oa?id=1932 Cultivos Tropicales application/pdf Instituto Nacional de Ciencias Agrícolas Cultivos Tropicales (Cuba) Num.2 Vol.38 |
| format | Artículo científico |
| id | redalyc_193252701007 |
| institution | Redalyc |
| language | es |
| publishDate | 2017 |
| publisher | Instituto Nacional de Ciencias Agrícolas |
| spellingShingle | LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR Fernando Guridi Izquierdo Agrociencias permeability Radical biomass photosynthetic pigments biological productivity LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR Fernando Guridi Izquierdo Andrés Calderín García Ricardo L. Louro Berbara Dariellys Martínez Balmori Mayelín Rosquete Bassó Agrociencias permeability Radical biomass photosynthetic pigments biological productivity The 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. 2017 artículo científico 1819-4087 https://www.redalyc.org/articulo.oa?id=193252701007 https://www.redalyc.org/journal/1932/193252701007/ https://www.redalyc.org/journal/1932/193252701007/html/ https://www.redalyc.org/journal/1932/193252701007/193252701007.epub https://www.redalyc.org/journal/1932/193252701007/movil es http://www.redalyc.org/revista.oa?id=1932 Cultivos Tropicales application/pdf Instituto Nacional de Ciencias Agrícolas Cultivos Tropicales (Cuba) Num.2 Vol.38 |
| title | LOS ÁCIDOS HÚMICOS DE VERMICOMPOST PROTEGEN A PLANTAS DE ARROZ (Oryza sativa L.) CONTRA UN ESTRÉS HÍDRICO POSTERIOR |
| topic | Agrociencias permeability Radical biomass photosynthetic pigments biological productivity |
| url | https://www.redalyc.org/articulo.oa?id=193252701007 https://www.redalyc.org/journal/1932/193252701007/ https://www.redalyc.org/journal/1932/193252701007/html/ https://www.redalyc.org/journal/1932/193252701007/193252701007.epub https://www.redalyc.org/journal/1932/193252701007/movil |