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Takagi K, Kaga A, Ishimoto M, et al. Diversity of seed cesium accumulation in soybean mini-core collections. Breed Sci. 2015;65(5):372-80doi: 10.1270/jsbbs.65.372.
Takagi, K., Kaga, A., Ishimoto, M., Hajika, M., & Matsunaga, T. (2015). Diversity of seed cesium accumulation in soybean mini-core collections. Breeding science, 65(5), 372-80. https://doi.org/10.1270/jsbbs.65.372
Takagi, Kyoko, et al. "Diversity of seed cesium accumulation in soybean mini-core collections." Breeding science vol. 65,5 (2015): 372-80. doi: https://doi.org/10.1270/jsbbs.65.372
Takagi K, Kaga A, Ishimoto M, Hajika M, Matsunaga T. Diversity of seed cesium accumulation in soybean mini-core collections. Breed Sci. 2015 Dec;65(5):372-80. doi: 10.1270/jsbbs.65.372. Epub 2015 Dec 01. PMID: 26719739; PMCID: PMC4671697.
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Breed Sci. 2015 Dec;65(5):372-80. doi: 10.1270/jsbbs.65.372. Epub 2015 Dec 01.

Diversity of seed cesium accumulation in soybean mini-core collections.

Breeding science

Kyoko Takagi, Akito Kaga, Masao Ishimoto, Makita Hajika, Toshiro Matsunaga

Affiliations

  1. NARO (National Agriculture and Food Research Organization) Agricultural Research Center , 3-1-1 Kannondai, Tsukuba, Ibaraki 305-8666 , Japan.
  2. National Institute of Agrobiological Sciences , 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602 , Japan.
  3. NARO Institute of Crop Science , 2-1-18 Kannondai, Tsukuba, Ibaraki 305-8518 , Japan.

PMID: 26719739 PMCID: PMC4671697 DOI: 10.1270/jsbbs.65.372

Abstract

Radiocesium is an extremely harmful radionuclide because of its long half-life; it is important to reduce its transfer from contaminated soil into crops. Here we surveyed genetic variation for seed cesium (Cs) concentration in soybean mini-core collections representing large genetic diversity. The collections grown over 3 years in rotational paddy fields exhibited varying seed Cs concentrations with significant year-to-year correlations, although the phenotypic stability of Cs concentration was lower than that of the congeners potassium (K) and rubidium (Rb). Although Cs is supposedly accumulated in plants via the K transport system, there was no apparent relationship between Cs and K concentrations, whereas a clear positive correlation was observed between Cs and Rb concentrations. Cs and K concentrations in seed showed slightly positive and negative correlations, respectively, with days to flowering. We selected several high or low Cs accumulator candidates on the basis of the 3 years of seed concentration data. These two groups showed significantly different seed Cs concentrations in another field. The differences could not be explained by flowering time alone. These results suggest that genetic variation for seed Cs concentration is present in soybean germplasm and would be useful for breeding low Cs-accumulating varieties.

Keywords: Glycine max; cesium; core collection; genetic diversity; potassium; rubidium

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