Flowering mechanism and genetic structure of monocarpic dwarfbamboo

为了在森林生态系统中控制矮化竹，必须明确该物种的交配系统。然而，矮秆竹因其地下根系而臭名昭著，这使得人们很难了解其物种的营养更新。此外，要了解单果矮秆竹种的开花机理要困难得多。我们没有任何有用的工具来研究营养再生系统和零星或灰白开花现象。在本项目中，我们重点研究了矮秆竹零星开花的遗传结构。我们开展了以下研究：1)天牛开花受其茎大小控制。2)我们为天牛属植物开发了10个微卫星基因座。3)对天牛零星开花斑块进行了克隆分析，发现其开花是受遗传控制的。4)收集了天牛的种子，为进一步研究交配系统奠定了基础。

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.