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


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



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



Otros recursos del mismo autor(es)

  1. Effect of male age in Caspian brown trout, Salmo trutta broodstock on reproductive performance In this study, three different age groups of male broodstocks (4, 5 and 6 years respectively) were u...
  2. Variability in hematology and plasma indices of common carp Cyprinus carpio, associated with age, sex and hormonal treatment The purpose of this study was to determine changes in hematological and plasma indices of common car...
  3. Physicochemical characteristics and fatty acid profile of Longissimus dorsi muscle of Beni-guil sheep breeding in eastern Morocco Peer reviewed
  4. Rapid Aqueous-Phase Hydrolysis of Ester Hydroperoxides Arising from Criegee Intermediates and Organic Acids Stabilized Criegee intermediates react with organic acids in the gas phase and at the air-water inte...
  5. The mechanism of aqueous ruthenium(II)-catalyzed olefin isomerization Olefin isomerization of allylic ethers and alcohols is catalyzed by Ru^(II)(H_2O) (tos = p-toluenesu...

Otros recursos de la mismacolección

No existen otros recursos

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.