1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Detalles del recurso

Descripción

Sunflower can be used for the remediation of metal-contaminated soils. Its high biomass production makes this plant species interesting for phytoextraction and using sunflower oil for a technical purpose may improve the economic balance of phytoremediation. The aim of the present field study was to screen 15 commercial cultivars of Helianthus annuus L., grown on metal-contaminated soil, to find out the variety with the highest metal extraction, which can be further improved by mutation or in vitro breeding procedures. Two different fertilizers (ammonium sulphate and ammonium nitrate) were also used to enhance the bioavailability of metals in soil. Highly significant differences were observed within tested varieties for metal accumulation and extraction efficiency. Furthermore, ammonium nitrate increased cadmium extraction, whereas ammonium sulphate enhanced zinc and lead uptake in most tested cultivars. In this field-based sunflower screening, we found enhanced cumulative Cd, Zn, and Pb extraction efficiency by a factor 4.4 for Salut cultivar. We therefore emphasize that prior to any classical breeding or genetic engineering enhancing metal uptake potential, a careful screening of various genotypes should be done to select the cultivar with the naturally highest metal uptake and to start the genetic improvement with the best available plant material.

Pertenece a

Infoscience  

Autor(es)

Erismann, K. -  H. -  Federer, G. -  Herzig, R. -  Nehnevajova, E. - 

Id.: 25065670

Versión: 1.0

Estado: Final

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 14-jun-2007

Contacto:

Localización:

Otros recursos del mismo autor(es)

  1. SKEW PARTIAL FIELDS, MULTILINEAR REPRESENTATIONS OF MATROIDS, AND A MATRIX TREE THEOREM We extend the notion of representation of a matroid to algebraic structures that we call skew partia...
  2. MPSoC application resilience by hardware-assisted communication virtualization Abstract Future MPSoCs will become increasingly vulnerable to environmental and manufacturing variab...
  3. Improvement of reliability for high-ohmic Cr–Si thin film resistors in a heat and humid environment: Removing moisture source by electrocatalytic decomposition of water Abstract The reliability of high-ohmic Cr–Si thin film resistors in a heat and humid (HH) environmen...
  4. La2O3 gate dielectrics for AlGaN/GaN HEMT Abstract The annealing temperature dependent electrical characteristics of La2O3 gate dielectrics fo...
  5. Estudio epidemiológico de la Parálisis de Bell o Parálisis Facial Idiopática realizado en el Servicio de fisiatría del Hospital Clínico Universitario de la Universidad Central de Venezuela. Noviembre 2003 - Marzo 2.004: Resultados preliminares ABSTRACT: The goal of this research is to present preliminary results on the prevalence of patients ...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.