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首页> 外文期刊>Breeding science >On the phylogeny and biogeography of the genus Oryza.
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On the phylogeny and biogeography of the genus Oryza.

机译：关于稻属的系统发育和生物地理学。

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摘要

The genus Oryza that gave rise to rice has a distinctive phylogenetic position within the Poaceae (Graminae). Recently, there has been much progress in understanding the phylogenetic relationships of angiosperms. In this review, current understanding of angiosperm and monocot phylogeny is discussed in relation to the emergence of Oryza. The lineage leading to Oryza arose early in the evolution of grasses that evolved after 70 mya. Since grasses arose well after the split of Gondwanaland, Oryza did not originate on Gondwanaland and continental drift did not play a role in Oryza biogeography. A new hypothesis is presented to explain the present day distribution of Oryza species. The role of animals, including birds, in the distribution of Oryza spread from a core centre of Oryza diversity in Southeast Asia and New Guinea is the basis for this hypothesis. Humans are also thought to have played a role in the distribution of Oryza species particularly in historic times. Finally, the continuing evolution of the genus Oryza is discussed. The wild relatives of rice can provide continuously evolving gene resources for rice improvement only if there is a substantial effort to conserve them in situ..
机译：产生水稻的稻属在禾本科（禾本科）中具有独特的系统发生位置。近来，在理解被子植物的系统发育关系方面已经取得了很大进展。在这篇综述中，关于稻的出现，讨论了对被子植物和单子叶植物系统发育的当前理解。导致Oryza的世系起源于70玛雅人生长的草类的进化早期。由于冈瓦纳（Gondwanaland）分裂后草长得很好，所以Oryza并非起源于冈瓦纳（Gondwanaland），而大陆漂移在Oryza生物地理学中也不起作用。提出了一个新的假设来解释Oryza物种的当今分布。动物（包括鸟类）在从东南亚和新几内亚Oryza多样性的核心中心传播的Oryza的分布中的作用是该假设的基础。人们还认为，人类在Oryza物种的分布中发挥了作用，特别是在历史时期。最后，讨论了稻属的持续进化。水稻的野生近缘种只有在付出巨大努力就地保存它们的情况下，才能为水稻改良提供不断发展的基因资源。

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