Germination Improvement of Vegetable Seeds Using Polyethylene Glycol

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  • ポリエチレングリコールによる野菜種子の発芽促進 (第1報)
  • ポリエチレングリコールによる野菜種子の発芽促進-1-ナス,ミツバ及びニンジン
  • ポリエチレン グリコール ニヨル ヤサイ シュシ ノ ハツガ ソクシン 1 ナ
  • I. Eggplant, <i>Cryptotaenia japonica</i> and Carrot
  • ナス, ミツバ及びニンジン

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Effects of invigoration with polyethylene glycol 6000 (PEG) on the germination of seeds of eggplant, Cryptotaenia japonica and carrot were investigated. Each seeds were invigorated on blotting paper moistened with PEG solution of -7.5, -10.0, -11.8 and -17.7 bars. Treatment temperatures were 15°, 20° and 25°C. Treatment periods were 7 days and 14 days.<br>1. Germination of seeds of eggplant, Cryptotaenia japonica and carrot were all accelerated by PEG invigoration. Especially, germination of eggplant seeds was much improved at low temperature of 15°C in both germination percentage and germination speed.<br>2. Treatment temperature of 25°C was most effective for eggplant seeds among three temperatures tested. For Cryptotaenia japonica and carrot seeds, no difference was shown among three treatment temperatures.<br>3. Fourteen day treatment period was more effective than 7 day period in eggplant and Cryptotaenia japonica seeds. In carrot seeds, it was oobserved only small difference between 7 day and 14 day treatment periods.<br>4. Addition of 50ppm or 100ppm of gibberellin to the PEG solution much increased the effectiveness of invigoration in eggplant seeds.<br>5. Dry stored seeds after invigoration showed no decrease of effectiveness after 7 days or 14 days of storage in eggplant and Cryptotaenia japonica when germinated on blotting paper. In carrot seeds, a little decrease was found in effectiveness after dry storage.<br>6. In eggplant seeds, effect of invigoration was shown a little smaller in the sand test than in the blotting paper test, especially after dry storage, though effect of invigoration was significant.<br>7. In eggplant, there was found as same the difference of growing days yet at the stage of four leaves as at the germination stage.

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