Physiological Integration and Life History in a Clonal Plant

克隆植物的生理整合和生活史

• 批准号: 9306179
• 负责人: Colleen Kelly
• 金额: $ 16.93万
• 依托单位: University of North Texas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9306179&HistoricalAwards=false
• 关键词: Physiological; Integration; Life; History; Clonal

9306179 Kelly Clonality is an extremely important phenomenon in plants. Clonal plant species comprise up to 90% of the higher plant species in alpine and Arctic communities, 60% or more of temperate floras, and even in tropical habitats, the majority of woody species possess the ability to sucker, crown sprout, or develop adventitious roots. Clonality is found in trees, shrubs, and herbs, under terrestrial, aquatic and arboreal conditions, and in both autotrophic and parasitic groups, yet much about this widely successful growth mode remains poorly understood. In clonal plants, sugars and other nutrients are transported from 'mother' plants to 'daughter' offshoots (ramets). Using greenhouse experiments to test theory, the research proposed will examine how variation in resource allocation among ramets affects the life history and contributes to the success of different genetic individuals of the clonal plant dodder (Cuscuta exaltata).%%% Clonal plants have broad economic importance as both crop plants (e.g. strawberries, blueberries, raspberries and asparagus) and noted crop pests such as dodder, which parasitizes crops including alfalfa in both temperate and tropical agriculture. The information provided by this study may prove useful for both crop growth and pest control, offering the data needed to create better schemes for timing and distribution of fertilizers in clonal crops, and reducing the dependence on chemical control of clonal pests.***

小行星9306179 克隆性是植物中一种极其重要的现象。 在高山和北极群落中，克隆植物占高等植物物种的90%以上，在温带植物区系中占60%或更多，即使在热带生境中，大多数木本植物也具有吸根、冠芽或不定根的能力。 克隆性存在于树木、灌木和草本植物中，在陆地、水生和树栖条件下，以及在自养和寄生群体中，但对这种广泛成功的生长模式仍知之甚少。 在克隆植物中，糖和其他营养物质从“母亲”植物运输到“女儿”分支（分株）。 利用温室实验来检验理论，该研究将研究分株之间资源分配的变化如何影响克隆植物菟丝子（Cuscuta exaltata）的生活史，并有助于不同遗传个体的成功。 克隆植物作为作物植物（例如草莓、蓝莓、乌藨子和芦笋）和著名的作物害虫如菟丝子（其在温带和热带农业中寄生包括苜蓿的作物）两者具有广泛的经济重要性。 这项研究提供的信息可能对作物生长和害虫防治都有用，为克隆作物的施肥时间和分配提供了更好的方案，并减少了对克隆害虫化学防治的依赖。