Thursday, May 5, 2016

 

 



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. Nutritive value of fishes of Lake Tanganyika: II. Mineral composition The composition of the minerals in three economically important fish species of Lake Tanganyika was ...
  2. Nanoemulsions containing a synthetic chalcone as an alternative for treating cutaneous leshmaniasis : optimization using a full factorial design Nanoemulsions are drug delivery systems that may increase the penetration of lipophilic compounds th...
  3. Cabeço da Arruda in the 1860s The identification of osteological evidence from the earliest excavation of Cabeço da Arruda in 1864...
  4. Overturning Circulation in the North Atlantic Ocean during Marine Isotope Stage 11c
  5. Surface water hydrography in the Mid-Latitude North Atlantic (IODP Site U1313) from 480-355 ka : observations from calcareous nannoplankton

Valoración de los usuarios

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

Busque un recurso