Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 31360483 |
| 异质生境分布的新疆棱叶蒜的遗传分化和生长适应策略 | |
| 林辰壹 | |
| 主持机构 | 新疆农业大学 |
| 开始日期 | 2014 |
| 结束日期 | 2017 |
| 资助经费 | 500000(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 | In China, the largest desert region, an important part of desert region of Central Asian, is located in Xinjiang where plant germplasm resources are specially marked. These plant germplasm resources with resistant characters response and adapt to arid and semi-arid climate. More and more researches focus on these endemic plant species. Tien Shan Mountains and Dzungaria-Tien Shan region are the gene pool of the world Allium germplasm resources. The genetic differentiation of the genus Allium presents particular characteristics under such extreme environmental conditions in Xinjiang and the genetic diversity is important aspect in the genetic study of a species. Allium caeruleum Pall. from heterogeneous habitat, a perennial polycarpic geophyte and only distributed in Xinjiang, China, has morphological differentiation, karyotype differentiation and reproductive system differentiation among natural populations. This study use the integrated methods of germplasm resources, population biology, cytogenetic biology, reproductive biology and molecular biology to observe and analyze genetic diversity, polymorphism and polytypism, the chromosome number, ploidy level and type, phenotypic plasticity, individual reproduction strategy, the annual growth rhythm and breeding system. The results will clarify the relationship between genetic differentiation and adaptive strategy, reveal the effect of environmental conditions on the genetic structure and the genetic differentiation pattern, explore elite germplasm, and master the basic rules and requirements for conservation and sustainable development of Allium caeruleum. It has great significance to clarify plant origin and evolution trend under desert environments in Xinjiang. It is the foundation of core collection constructing，germplasm innovating, gene localizing and cloning, and functional analyzing of Allium caeruleum and its wild and domestic relative germplasm. It provides hybrid materials for polyploidy breeding, resistance breeding and new germplasm creation, and guidance for xerophytic utilization and ecological safety under the severe and unpredictable desert conditions in Xinjiang, China. |
| 中文关键词 | 新疆 ; 棱叶蒜 ; 遗传分化 ; 异质生境 ; 生长适应策略 |
| 来源机构 | 新疆农业大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/344247 |
| 推荐引用方式 GB/T 7714 | 林辰壹.异质生境分布的新疆棱叶蒜的遗传分化和生长适应策略.2014. |
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