[Effect of zinc fertilization on cadmium uptake and accumulation in two barley (Hordeum vulgare) cultivars].
A pot experiment was carried out in a greenhouse to investigate the interactive effects of Zn-Cd on the growth and the uptake of Cd and Zn by two barley genotypes (Sahara and Clipper). The results showed that under the conditions of this experiment, adding Cd and Zn had no significant effect on the shoot biomass of either cultivars, but applying Zn tended to reduce the root biomass of both cultivars. With the amount of less than 20 mg.kg-1, Zn addition did not affect Cd concentration in plant tissues; while at 40 mg.kg-1, it decrease Cd concentrations significantly in plant tissues of both cultivars. Total Cd uptake by both cultivars decreased with increasing in Zn application, mainly due to the decrease in root biomass. The two genotypes were significantly different in Zn uptake, but this difference did not affect Cd uptake. Cd concentration in roots of Zn-efficient cultivar Sahara was lower than that of Zn-inefficient cultivar Clipper.
Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085. ygzhu@mail.rcees.ac.cn
Yongguan
Y
Zhu
D018533:Biomass; D002104:Cadmium / Q000493:pharmacokinetics*; D005308:Fertilizers; D005838:Genotype; D001467:Hordeum / Q000145:classification / Q000378:metabolism*; D010758:Phosphorus / Q000493:pharmacokinetics; D015032:Zinc / Q000493:pharmacokinetics / Q000494:pharmacology*
D005308:Fertilizers; D002104:Cadmium; D010758:Phosphorus; D015032:Zinc