センブリ種子の冷凍保存が発芽および実生の収量とswertiamarin含有率に及ぼす影響

概要

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This study was carried out to clarify the effect of long-term frozen storage of Swertia japonica seeds on germination, yield and swertiamarin content of the seedlings. The seeds were successively collected in the conventional way from the year 1992 to 2003, and stored at -20℃ until the experiment was begun. The germination percentage differed among the seeds that were collected in different years, but there were no significant correlation between the percentage and the storage period. In addition, correlation between plant dry weight and seed storage period was not observed. Moreover, the seed storage period had no effect on swertiamarin content of the seedlings. Therefore, the seed viability of S. japonica can be maintained for at least 13 years by freezing without affecting dry matter yield or quality as a crude drug.
2011-02-20