Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 31360086 |
| 硅在多浆旱生植物适应干旱环境中的作用机制研究 | |
| 康建军 | |
| 主持机构 | 甘肃省林业科学研究院 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 470000(CNY) |
| 项目类别 | 地区科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | The groundwater level has been very deep (mostly below 15m) in northwest desert regions, the growth of desert plants are very difficult to rely on groundwater, how they adapt to arid environment? The project applicant and wang suo min (supervisor of applicant) found that the desert succulent xerophytes can not only absorb and accumulate a great quantity of Na+ than K+ by roots from low-salinity soil that was stored in the vacuole and use it as an important physiological osmoregulatory substance to osmotic adjustment, but also can absorb and accumulate a great quantity of silicon (SiO2) to adapt to arid environment. This study based on Si may enhance the drought resistance of arid desert plants; we used the xerophyte specie Haloxylon ammodendron as the representative specie, to explore the physiological mechanism of Silicon (Si) on the succulent xerophytes Haloxylon ammodendron to adapt to arid environment through the indoor sand culture and pot soil methods. Firstly, the different concentrations of Si ( K2SiO3) on the growth of Haloxylon ammodendron were analyzed to search the suitable concentrations of Si and provide evidence on the physiological mechanism of Haloxylon ammodendron; secondy, the different concentrations of silicon ( K2SiO3) on the growth of Haloxylon ammodendron to adapt to arid environment under different osmotic stress were analyzed to discuss the drought resistant relationship between silicon and Haloxylon ammodendron, and reveal the mechanism of silicon in enhancing the drought resistance of Haloxylon ammodendron; finally, the positive effect of silicon on the growth of Haloxylon ammodendron to adapt to the arid environment under drought stress were further discussed and analyzed to verify the mechanism of silicon in enhancing the drought resistance of Haloxylon ammodendron. The project will lay the foundation for the plant drought resistance theory of arid enhancement, and provide a theoretical basis for the ecological environment construction of desert regions. |
| 中文关键词 | 硅 ; 多浆旱生植物 ; 干旱环境 ; 作用机制 |
| 来源机构 | 甘肃省林业科学研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/344286 |
| 推荐引用方式 GB/T 7714 | 康建军.硅在多浆旱生植物适应干旱环境中的作用机制研究.2014. |
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