The effect of spore density on germination and development in Pteridium, monitored using a novel culture technique
The effect of spore density on germination and development in Pteridium, monitored using a novel culture technique
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DOI：
10.2307/1547324
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发表时间：
2000-07-01
影响因子：
0.8
通讯作者：
Sheffield, E
中科院分区：
文献类型：
--
作者：
Ashcroft, CJ;Sheffield, E
对于以3至9883孢子mm（-2）的已知密度播种在基于PhytagelTM的固体生长培养基上的孢子，记录蕨属（蕨属）中的萌发百分比和向二维生长转变的百分比。记录的最大发芽发生在播种密度高于最大过渡发生。在中等密度（187 ~ 2114个孢子mm（-2））下，发芽率最高（43 ~ 52%的孢子播种），在360个孢子mm（-2）下最高（52%的孢子播种）。在使用的最低密度下，转换百分比最高。得出的结论是，发芽和过渡有不同的密度最佳值，这两种现象在蕨类植物的调查应考虑到这一点。
Percentage germination and percentage transition to two-dimensional growth in Pteridium (bracken fern) were recorded for spores sown on a solid Phytagel(TM)-based growth medium at known densities of between 3 and 9883 spores mm(-2). The maximum germination recorded occurred at sowing densities higher than those at which maximum transition occurred. Percentage germination was greatest (43 to 52% of spores sown) at intermediate densities (187 to 2114 spores mm(-2)), being highest (52% of spores sown) at 360 spores mm(-2). Percentage transition was highest at the lowest densities used. It was concluded that germination and transition have different density optima and that investigations of these two phenomena in ferns should take account of this.