Genotypic difference in Cs-137 accumulation and transfer from the contaminated field in Fukushima to azuki bean (Vigna angularis)

摘要

The screening of mini-core collection of azuki bean accessions (Vigna angularis (Willd.) Ohwi & Ohashi) for comparative uptake of Cs-137 in their edible portions was done in field trials on land contaminated by the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. Ninety seven azuki bean accessions including their wild relatives from a Japanese gene bank, were grown in a field in the Fukushima prefecture, which is located approximately 51 km north of FDNPP. The contamination level of the soil was 3665 480 Bq kg(-1) dry weight (Cs-137, average +/- SD). The soil type comprised clay loam, where the sand: silt: clay proportion was 42:21:37.