Estimation of Aging of Soybean Seeds by Measurement of Delayed Fluorescence after Irradiating with UV-excited Light

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  • 紫外線励起光照射後の遅延蛍光計測によるダイズ種子における老化の評価
  • シガイセン レイキコウ ショウシャ ゴ ノ チエン ケイコウ ケイソク ニ ヨル ダイズ シュシ ニ オケル ロウカ ノ ヒョウカ

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The delayed fluorescence intensity emitted from soybean cv. ‘Fukuyutaka’ seeds irradiated with UV-excited light was measured using a photon detection unit. When seeds were stored at room temperature without packaging for 1 year, the percentages of germination and emergence were lower. Additionally, the delayed fluorescence intensity was higher than when seeds were stored at 5 °C with vacuum packaging. Seeds underwent accelerated aging when stored at 30 °C with greater than 95 % relative humidity for 7 and 14 days. The accelerated aging was accompanied by lower germination percentage, and the delayed fluorescence intensity was higher. A significant negative correlation was observed between the germination percentage and the delayed fluorescence intensity from seeds stored at 5 °C with vacuum packaging, those stored at room temperature without packaging, and those that were stored at 30 °C with greater than 95 % relative humidity. The delayed fluorescence intensity from the seeds increased as the germination percentage decreased. These results suggest that measuring the delayed fluorescence intensity from soybean seeds irradiated with UV-excited light can estimate their aging.

Journal

  • Shokubutsu Kankyo Kogaku

    Shokubutsu Kankyo Kogaku 26 (3), 154-159, 2014

    Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

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