A Method for Early Detection of Irradiated Potato Tubers (2):Morphological Changes by Gibberellin and Kinetin on Dormant Buds

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The effects of gibberellin and kinetin on the dormant buds of irradiated potatoes and the control were examined with two kinds of stocks, "Danshaku" and "Norin No. 1" on the market.<BR>(1) In the case of control (not irradiated), seven days after treated with gibberellin in darkness, the bud developed into a white stem of about 20mm in length, by elongation of the internode from the sixth to eighth node. (Fig. 1)<BR>Seven days after treated with kinetin in light, the control buds developed into a crimson rosette of about 2mm in diameter, by its young leaves becoming scaly and eliptic. (Fig. 2)<BR>(2) In the case of irradiated samples, when treated with these reagents, the bud showed no visual change even in fourteen days. The apparent difference was observed on the treated buds between the irradiated samples and the control. Whether potatoes have been irradiated or not can be detected by observation of the treated bud shape.<BR>Abbreviations used in text-figures are as follows: -axb: axillary bud, bu: bud, gp: growing point, h: hair, ylf: young leaf.
公益社団法人日本食品衛生学会の論文