Delayed autonomous self-pollination in two Japanese varieties of Epipactis helleborine (Orchidaceae).
Delayed autonomous self-pollination in two Japanese varieties of Epipactis helleborine (Orchidaceae).
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两个日本品种的 Epipactis helleborine（兰科）的自主自花授粉延迟。
DOI：
10.1111/boj.12111
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发表时间：
2013
影响因子：
2.4
通讯作者：
Suetsugu K.
中科院分区：
文献类型：
--
作者：
Suetsugu K;Kawakita A;Kato M.;Suetsugu K.;Suetsugu K.
地栖植物Epipactis helleborine是一种形态多变的物种，具有广泛的地理分布。它分布于整个欧洲，向东延伸至西伯利亚、中国和日本。它通常由社会黄蜂授粉，并显示出异交物种的形态特征。在日本的暖温带地区，E.铁苋菜通常出现在高山或亚高山地区，除了沿海松林外，从未在低海拔森林中发现过。沿海人口的E。在品种层次上，通常将其归类为E。helleborinevar.sayekiana，内陆种群被称为E. helleborinvar.papillosa. helleborinevar. sayekiana具有独特的自花授粉策略，因为它的自主自花授粉是在干燥的栖息地，如沿海沙丘中进化而来的。本文研究了E. helleborinevar、sayekiana和var.papillosata来检测它们生殖系统的差异。出乎意料的是，两者。helleborinevar.papillosaandE.发现Helleborinevar、sayekiana具有自花授粉策略，因此很少被昆虫访问。自花授粉发生在开花季节结束时，即使昆虫介导的授粉失败，也可能起到确保授粉的作用。此外，E. helleborinevar.papillosaandE. helleborinevar.sayekiana。这些观察表明没有必要区分这两个品种。此外，E. Helleborinevar. papillosa由食蚜蝇授粉，表明E. helleborinevar.papillosais可能在生物学上与其母种E.铁苋菜碱
The terrestrial orchidEpipactis helleborineis a morphologically variable species with a wide geographical distribution. It is found throughout Europe and continues eastwards to Siberia, China and Japan. It is usually pollinated by social wasps and displays the morphological characteristics of an outcrossing species. In warm, temperate areas of Japan,E. helleborineoften appears in alpine or subalpine regions, and has never been found in low-altitude forests, except for coastal pine forests. The coastal population ofE. helleborineis often classified at the variety level, asE. helleborinevar.sayekiana, and the inland populations are known asE. helleborinevar.papillosa.It is possible thatE. helleborinevar.sayekianapossesses a distinctive selfing strategy, as its autonomous self-pollination has evolved in dry habitats, such as coastal dunes. The present study investigated the pollination biology ofE. helleborinevar.sayekianaand var.papillosato detect differences in their reproductive systems. Unexpectedly, bothE. helleborinevar.papillosaandE. helleborinevar.sayekianawere found to possess a self-pollination strategy and were therefore rarely visited by insects. Self-pollination occurs at the end of the flowering season and probably acts to ensure pollination even if insect-mediated pollination fails. Moreover, there are no floral differences betweenE. helleborinevar.papillosaandE. helleborinevar.sayekiana.These observations suggest that it is not necessary to distinguish between these two varieties. Furthermore,E. helleborinevar.papillosawas pollinated by hoverflies, suggesting thatE. helleborinevar.papillosais probably biologically distinct from its mother species,E. helleborine.