薬用植物種子の発芽に関する研究II : トリカブト種子の発芽について

概要

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The effects of gibberellin, kinetin, thiourea and potassium nitrate on the germination of Aconitum japonicum seeds were studied. Both autumn and spring sowings, gave high germination rates when the seeds had been treated with gibberellin A_3. A treatment with 50 ppm gibberellin was effective, and treatment with 500 ppm gibberellin was more effective for germination. The effects of pre- soaking of the seeds in a 500 ppm gibberellin solution for 3 h and 24 h were about the same. Kinetin, thiourea and potassium nitrate did not have such an effect of breaking dormancy of the seeds. The optimum temperature for germination was 10℃. At higher temperatures, the germination rate tended to be reduced, but the average days required for germination were shortened. Low temperature (5℃) treatments for 2 weeks, one month, 2 months and 3 months, and stratification for about 3 months were not so effective as gibberellin treatment. In the pot test started on 17, December the seeds pre-soaked with 500 ppm gibberellin for 24 h, gave 50% germination rate in the spring of the 1st year, while the germination rate of non-treated seeds of the 1st year was 10% and then that of the 2nd year was 4%. Treatment with 500 ppm gibberellin A_3 at 10℃ was effective in breaking dormancy of the seeds of other three Aconitum spp., A. japonicum var. montanum, A. sanyoense and A. carmichaeli.
日本生薬学会の論文
1994-12-20