도라지의 입묘을 향상을 위한 종자처리의 모형화

Abstract

Indoor seed treatments to elevate seedling emergence should be of value. The study was done to model the presown treatments of Platycodon grandiflorum seeds by evaluating the treatment effects of priming, GA₃, drying and water imbibition after drying on their germination and then their successive seed treatments on the basis of its seedling emergence. After priming using Ca(NO₃)₂and GA₃treatment under their different concentrations and light quality illuminated for 12 hours a day were done separately and their two best results were compared to determine the better one, drying of imbibed seeds using the above best result and water imbibition of the dried seeds were successively done to check the rates of germination and emergence. In each treatment of priming and GA₃, the former best germination occurred at Ca(NO₃)₂150mM done under 2 day darkness but the latter one did at 0.01 mM done under 12 hour a day red light forced for 3 day. Of the two best results from priming and GA₃treatments, the latter result was shown higher germination rate. GA₃treated seeds were best desiccated under 35℃ and 4 hour red light illumination. The germination rate of seeds dried after GA₃treatment was enhanced as imibibed 2 days immediately before sowing. Seedling emergence of all 3 successive treatment, GA₃drying and water imbibition before sowing was the greatest than the two others, only GA3 treatment and the combination of GA₃and drying, in which indicated that its presown seed treatment must follow the successive procedure of the above 3 ones.