ドクゼリ(Cicuta virosa L.)の発芽特性と生活史の関わり(予報)

概要

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We examined the germination characteristic of Cicuta virosa L. growing in mire. Few seeds germinated under no treatment condition in our experiments. Thus, it is considered that many of seeds have dormanted innately. The primaly dormancy was broken by moist-chilling treatment, temperature fluctuation and irradiation. Especially, moist-chilling treatment and temperature fluctuation promoted germination vigorously. The germination ratio slightly increased after hot water treatment on seed. As all dormant seeds are exposed to the moist-chilling condition during winter in the field, most of dispersed seeds seem to be germinable until spring. Thus, many seedlings may be able to emerge and establish in the undisturbed vegetation in spring. Moreover, seedlings may also establish in the disturbed area more abundantly, because germination of C. virosa was promoted by temperature fluctuation and irradiation.
横浜国立大学の論文
1999-03-31