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[Efecto de auxina en inducción de grupos de raíces en Embothrium coccineum J.R. Forst. & G.]

dc.contributor.authorDonoso Ñ., Gabriel
dc.contributor.authorCastro, Mauricio
dc.contributor.authorNavarrete, Darío
dc.contributor.authorBravo, León
dc.contributor.authorCorcuera P., Luis 2013
dc.descriptionTexto en ingles
dc.description.abstractAuxins play an important role in cluster root (CR) development in some species under low P conditions.However, the mechanism for CR induction in Embothrium coccineum J.R. Forst. & G.Forstremains unknown. Therefore, the aim of this work was to determine the effect of auxin on CR induction in E. coccineum, under low P conditions. For this, plants of E. coccineum were grown under P sufficiency and deficiency, and were treated with exogenous auxin and an auxin transport inhibitor. Phosphorous concentration in leaves, proportion of the total root allocated to CR mass (CRA), CR number (CRN), CR mass (CRm), and individual CR mass (ICRm), were measured. The number of CR showed a negative correlation with P concentrations in leaves. Furthermore, application of auxin in plants grown under P deficiency increased the CRA in a 50% and CRN in a 60%. The values of all parameters measured in plants grown under P deficiency conditions were reduced to less than half that observed in control plants, after foliar application of auxin transport inhibitor. However, no difference was observed when auxin was applied in plants grown with P supply. These results suggest that P and auxin are important factors for CR induction in E. coccineum
dc.relation.ispartofChilean Journal of Agricultural Research
dc.title[Efecto de auxina en inducción de grupos de raíces en Embothrium coccineum J.R. Forst. & G.]
dc.title.alternativeEffect of auxin on cluster roots induction in Embothrium coccineum J.R. Forst. & G. Forst. in phosphorus deficiency condition
dc.relation.ispartofnov. 73(3) p. 220-224
dc.subject.spanishacido naftalenoacetico
dc.subject.spanishsistema radicular
dc.ubicacion.iniaEn las Bibliotecas del INIA
dc.codigo.temporalF60 H50 3300
dc.paginas.temporal5 p.

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