Sunday, November 23, 2014

 

 



Soy un nuevo usuario

Olvidé mi contraseña

Entrada usuarios

Lógica Matemáticas Astronomía y Astrofísica Física Química Ciencias de la Vida
Ciencias de la Tierra y Espacio Ciencias Agrarias Ciencias Médicas Ciencias Tecnológicas Antropología Demografía
Ciencias Económicas Geografía Historia Ciencias Jurídicas y Derecho Lingüística Pedagogía
Ciencia Política Psicología Artes y Letras Sociología Ética Filosofía


Screening of sunflower cultivars for metal phytoextraction in a contaminated field prior to mutagenesis

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


  Descargar recurso

Detalles del recurso

Pertenece a: Infoscience  

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.

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. GPU Acceleration for FEM-Based Structural Analysis Graphic Processing Units (GPUs) have greatly exceeded their initial role of graphics accelerators an...
  2. Fibromatosis palmar infantil: a propósito de un caso We present a case of palmar fibromatosis complicated with a pyogenic granuloma in a child. Both enti...
  3. Simulations of the Mid-Pliocene Warm Period Using Two Versions of the NASA-GISS ModelE2-R Coupled Model The mid-Pliocene Warm Period (mPWP) bears many similarities to aspects of future global warming as p...
  4. Amino Acids Generated from Hydrated Titan Tholins: Comparison with Miller-Urey Electric Discharge Products Various analogues of Titan haze particles (termed tholins) have been made in the laboratory. In cert...
  5. Strong Temporal Variation Over One Saturnian Year: From Voyager to Cassini Here we report the combined spacecraft observations of Saturn acquired over one Saturnian year (appr...

Valoración de los usuarios

No hay ninguna valoración para este recurso.Sea el primero en valorar este recurso.
 

Busque un recurso