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首页> 外文期刊>Journal of Plant Research >Genets of dwarf bamboo do not die after one flowering event: evidence from genetic structure and flowering pattern
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Genets of dwarf bamboo do not die after one flowering event: evidence from genetic structure and flowering pattern

机译:矮竹的种系在一次开花后不会死亡:遗传结构和开花方式的证据

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摘要

Dwarf bamboos in the genus Sasa are believed to be long-lived, synchronously flowering, and monocarpic plants. However, the monocarpy of dwarf bamboo has not been confirmed, because whether all ramets within one genet flower at the same time cannot be determined without differentiating the genetic structure among ramets. This study aims to evaluate the reproductive traits of Sasa pubiculmis by verifying the monocarpy and physiological integration between flowering ramets and non-flowering ramets during a 4-year flowering period. One genotypically identified genet, which covered an area of approximately 3 ha, had both flowering and non-flowering patches of ramets during the 4-year flowering period (2004-2007). A fraction of the flowering genet remained non-flowering during the 4 years of observation, and did not die after mass flowering. Flowering ramets were physically connected to non-flowering ramets via rhizomes, and assimilated C-13 was allocated from non-flowering ramets to flowering ramets. Consequently, we clarified that this dwarf bamboo potentially has polycarpic reproductive traits rather than monocarpic, and a genet can keep rhizomes and non-flowering patches alive to sustain the organism after mass flowering.
机译:Sasa属的矮竹据信是长寿,同步开花和单掌植物。但是,由于不区分分株之间的遗传结构就无法确定是否同时鉴定出一株种花中的所有分株,因此尚未确认矮竹的单性。本研究旨在通过验证4年开花期开花分株和非开花分株之间的单掌和生理学整合来评估S草的生殖特性。一个基因型鉴定的种系,覆盖约3公顷的面积,在4年开花期(2004-2007年)同时开花和不开花。在观察的4年中,一小部分开花属仍未开花,并且在大量开花后并未死亡。开花的分株通过根状茎与非开花的分株物理连接,同化的C-13从非开花的分株分配到开花的分株。因此,我们弄清了这种矮竹可能具有多果类的繁殖特性,而不是单果类,并且一个种可以使根茎和未开花的小片存活下来,以在大量开花后维持该生物。

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