Flowering mechanism and genetic structure of monocarpic dwarfbamboo

为了控制森林生态系统中的矮生竹，必须弄清该物种的交配系统。然而，矮生竹种的地下根系是众所周知的，这使得人们很难了解其营养更新。此外，了解一次结实的矮生竹种的开花机制也是一件非常困难的事情。由于缺乏研究营养体再生系统和零星开花现象的有效工具，本研究着重于研究矮生竹种的零星开花现象的遗传结构。本研究主要进行了以下几个方面的研究：1）垂穗赤竹的开花受其秆径的控制; 2）利用微卫星技术对10个微卫星位点进行了定位; 3）对垂穗赤竹的散花斑块进行了克隆分析。4）收集到的健康种子来自S. cernua。cernua，这将能够使用我们未来的研究分析交配系统。

In order to control dwarf bamboo in the forest ecological system, we have to make clear the mating system of the species. However, dwarf bamboo species are notorious for its underground root system, which make it difficult to understand the vegetative regeneration of its species. Besides it is far more difficult to understand the flowering mechanism of the monocarpic dwarf bamboo species. We did not have any useful tools to investigate the vegetative regeneration system and the sporadic or grega rious flowering phenomena.In this project, we emphasized on the genetic structure of a sporadic flowering of dwarf bamboo sp ecies. We carried out the following studies.1) Flowering of Sasa cernua was controlled by its culm size.2) We developed 10 microsatellite loci for genus Sasa.3) We investigated the clonal analysis on the sporadic flowering patch of S. cernua to find out that the flowering is genetically controlled.4) We collected sound seeds from S. cernua, which will be able to use our future study of analyzing the mating system.