Relations of fine-root morphology on (137)Cs uptake by fourteen Brassica species.
Fourteen Brassica species consisting of seven leafy vegetables and seven root vegetables were examined for (137)Cs uptake differences in relation to their fine-root morphological characters. A pot experiment was conducted from November 2014 to February 2015 in a Phytroton using a contaminated soil of Fukushima prefecture. Leafy vegetables showed bigger root diameters, larger root surface area and larger root volume. Consequently, leafy vegetables had higher (137)Cs uptake compared to root vegetables. Among the three fine-root parameters, only root surface area was observed as a significant contributing factor to higher (137)Cs uptake in terms of transfer factor (TF, dry weight basis). Kakina exhibited higher (137)Cs TF value (0.20) followed by Chinese cabbage (0.18) and mizuna (0.17). Lower TF values were observed in turnip (0.059), rutabaga (Kitanoshou) (0.062) and radish (Ha daikon) (0.064).
United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Han Phyo
HP
Aung
Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Yi Swe
YS
Aye
Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Akwasi Dwira
AD
Mensah
United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Richard Ansong
RA
Omari
Institute of Agriculture, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Salem
S
Djedidi
Institute of Agriculture, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Yosei
Y
Oikawa
Institute of Agriculture, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Naoko
N
Ohkama-Ohtsu
Institute of Agriculture, Tokyo University of Agriculture and Technology, Saiwaicho 3-5-8, Fuchu, Tokyo, 183-8509, Japan.
Tadashi
T
Yokoyama
Leibniz Centre for Agricultural Landscape Research, Institute of Land Use Systems, Eberswalder str. 84, 15374, Muencheberg, Germany. Electronic address: belks@zalf.de.
Sonoko Dorothea
SD
Bellingrath-Kimura
D001937:Brassica / Q000033:anatomy & histology* / Q000378:metabolism*; D002588:Cesium Radioisotopes / Q000378:metabolism*; D007564:Japan; D018515:Plant Leaves / Q000033:anatomy & histology / Q000378:metabolism; D018517:Plant Roots / Q000033:anatomy & histology / Q000378:metabolism; D011834:Radiation Monitoring; D012990:Soil Pollutants, Radioactive / Q000378:metabolism*; D013045:Species Specificity
D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive
Brassica vegetables; Fine-root; Fukushima soil; Root surface area; Transfer factor