Laboratory of Palaeobotany and Palynology, Utrecht University, Budapestlaan 4, 3584 CD, Utrecht, The Netherlands.
Proc Natl Acad Sci U S A. 1996 Oct 15;93(21):11713-7. doi: 10.1073/pnas.93.21.11713.
This year is the centenary of the surprising discovery in 1896 of zoidogamy in extant cycadophytes and Ginkgo. But by coincidence, also in the same year, the concept of prepollen was introduced. The morphology of prepollen was considered justification for the probable production of motile antherozoids in extinct gymnosperms. In this paper, the history of the prepollen concept is briefly outlined. It is emphasized that, in addition to well-known examples in pteridosperms and cordaitaleans, a prepollen condition also occurred among late Paleozoic conifers.
今年是 1896 年令人惊讶的发现现存苏铁植物和银杏的异型配子体的一百周年纪念。但巧合的是,同年也引入了花粉前体的概念。花粉前体的形态被认为是在已灭绝的裸子植物中可能产生游动雄配子体的证据。本文简要概述了花粉前体概念的历史。需要强调的是,除了在脉蕨类植物和楔叶类植物中众所周知的例子外,晚古生代针叶树中也存在花粉前体的情况。