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首页> 外文会议>International Grassland Congress >Using common gardens and AFLP analyses to identify metapopulations of indigenous plant materials for rangeland revegetation in western USA
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Using common gardens and AFLP analyses to identify metapopulations of indigenous plant materials for rangeland revegetation in western USA

机译：使用普通花园和AFLP分析来识别美国西部岭南植物材料的土着植物材料的数量

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Fastmismanagement, overgrazing, invasive weedy species, wildfires, marginal crop production, mineral and energy extraction, recreation and global climate change are challenges currently facing rangclands (Pierson et al. 2011). I These disturbances maylead to long-term reductions in biodiversity, altered nutrient and water cycling, diminished f forage production for livestock and wildlife, increased wildfire frequency and increased soil erosion and stream sedimentation (Sheley etal. 2008). Rangelandrevegetation with desirable plant materials may be required to improve degraded conditions, speed recovery, and prevent further erosion and degradation. There is a critical need for plant materials to restore and revegetatc rangeland ecosystems. Legumesindigenous to western North America arc of particular interest for revegetation because they provide biologically fixed nitrogen, increase plant production, enhance forage quality and provide food sources for grazing animals and pollinators. Some land managers in the USA are concerned with the genetic identity of populations used for revegetation. To balance concerns of genetic identity, ecological adaptation, and economical seed production, we assessed genetic variation and its phenotypic expression inAstragalusfiIipes Torr. ex A. Gray (basalt milkvetch), Dalea ornata (Douglas) Eaton & Wright (western prairie clover) and D. searlsiae (A. Gray) Barneby (Searls' prairie clover) using common-garden and AFLP (amplified fragment length polymorphism) techniques. These data were used to define population structures (genetically differentiated groups) within each species, which served as a basis for commercial release and rangeland revegetation (Johnson et al. 2012).
机译：快餐，过度吸引，侵入性杂草种，野火，边缘作物生产，矿产和能源提取，娱乐和全球气候变化是目前面临的挑战率（Pierson等，2011）。我这些扰动可能导致生物多样性的长期减少，养分和水循环改变，牲畜和野生动物的牧草生产，野火频率增加，土壤侵蚀和流沉降增加（Sheley Etal。2008）。距离所需的植物材料的曲兰芹蔬菜可以提高降解条件，速度回收，防止进一步的侵蚀和降解。植物材料恢复和RevegetAtc牧场生态系统的批判性需求。植物北美洲北美弧形弧形弧形弧形弧形弧度，因为它们提供了生物固定的氮，增加了植物生产，提高饲料质量，为放牧动物和粉刷提供食物来源。美国的一些土地管理人员涉及用于植物的群体的遗传身份。为了平衡遗传身份，生态适应和经济的种子生产的担忧，我们评估了遗传变异及其表型表达Inastragalusfiiipes Torr。 EX A.灰色（玄武岩牛奶纤维），Dalea ornata（道格拉斯）伊顿＆赖特（西部大草原三叶草）和D. Searlsiae（A. Gray）Barneby（Searls'rairie Clover）使用共用花园和AFLP（扩增的片段长度多态性）技术。这些数据用于定义每个物种内的人口结构（基因分化组），该组织担任商业释放和Rangeland Revegetation的基础（Johnson等，2012）。

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