Absence of hybridisation between <i>Fuscospora</i> species at a site in Arthur's Pass National Park, New Zealand

We analysed simple sequence repeat markers for a selection of red beech (<i>Fuscospora fusca</i>) and mountain beech (<i>Fuscospora cliffortioides</i>) trees growing together and for seeds collected from them. Our analysis detected neither hybrid trees nor hybrid seeds within our sample. We suggest pre-zygotic reproductive isolating mechanisms such as differences in flowering time may be important in maintaining boundaries between <i>Fuscospora</i> species despite extensive sympatry.

本研究针对同域生长的红水青冈（*Fuscospora fusca*）与山地水青冈（*Fuscospora cliffortioides*）植株，以及采集自二者的种子，开展了简单序列重复标记（simple sequence repeat marker, SSR）分析。检测结果显示，本次采样样本中未发现杂交植株或杂交种子。我们推测，尽管该水青冈属（*Fuscospora*）物种存在广泛的同域分布，但诸如开花时间差异之类的合子前生殖隔离机制，可能是维持其物种间界限的重要因素。

搜集汇总

背景与挑战

背景概述

该数据集通过分析新西兰亚瑟隘口国家公园中红山毛榉（Fuscospora fusca）和山毛榉（Fuscospora cliffortioides）的简单序列重复标记，研究了这两个物种间的杂交情况。研究发现，在样本中未检测到杂交树或杂交种子，表明尽管物种广泛同域分布，但可能通过开花时间差异等合子前生殖隔离机制维持物种界限。