摘要
In this study,tobacco cultivar Nanjiang No.3 was selected as the experimental material to uptake,accumulation and subcellular distribution of Cd in tobacco.The results showed that Cd uptake in tobacco leaves increased first then declined and increased again;the content generally in descending order of of Cd in various subcellular fractions of tobacco leaves demonstrated a descending order of cytosols〉cell walls〉mitochondria〉chloroplasts;the contents of Cd in various subcellular fractions of tobacco roots were in an descending order of cell walls〉cytosols〉mitochondria〉chloroplasts;under high Cd concentrations,tobacco plants were seriously harmed by Cd.This study provided theoretical basis for the improvement of tobacco production.
In this study,tobacco cultivar Nanjiang No.3 was selected as the experimental material to uptake,accumulation and subcellular distribution of Cd in tobacco.The results showed that Cd uptake in tobacco leaves increased first then declined and increased again;the content generally in descending order of of Cd in various subcellular fractions of tobacco leaves demonstrated a descending order of cytosols〉cell walls〉mitochondria〉chloroplasts;the contents of Cd in various subcellular fractions of tobacco roots were in an descending order of cell walls〉cytosols〉mitochondria〉chloroplasts;under high Cd concentrations,tobacco plants were seriously harmed by Cd.This study provided theoretical basis for the improvement of tobacco production.
