Intra-cultivar variability of the soil-to-grain transfer of fallout 137Cs and 90Sr for winter wheat.
J Environ Radioact
; 94(1): 16-30, 2007.
Article
em En
| MEDLINE
| ID: mdl-17276560
ABSTRACT
Differences between the root uptake of fallout radionuclides by different cultivars ('inter-cultivar' variability) growing on the same field may be influenced not only by genetic differences of the cultivars, but also by the spatial variability of the soil-to-grain transfer within the cultivation area of each cultivar. This 'intra-cultivar' variability was investigated in 2001 and 2002 for 137Cs and 90Sr using three winter wheat cultivars with four replicates for each cultivar at three different sites in Bavaria, Germany. The intra-cultivar variability proved to be in the same range as the inter-cultivar variability which was determined earlier at the same sites for both radionuclides. An ANOVA of the 137Cs data set revealed that the variability of the 137Cs soil-to-grain transfer was caused by the soil and climate (year) at the field sites and the interaction of cultivar and field. A significant contribution of the factor 'cultivar' alone to the variability could not be detected. This may be due to the complex environmental conditions to which plants are exposed in field experiments. To find wheat cultivars with minimal uptake of fallout radionuclides it may be better to examine the molecular mechanisms of their root uptake in order to identify targets for breeding "safer" plants.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Cinza Radioativa
/
Poluentes Radioativos do Solo
/
Radioisótopos de Estrôncio
/
Triticum
/
Radioisótopos de Césio
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Environ Radioact
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Alemanha