Dissertation Research: Resource Allocation and the Maintenance of Gynodioecy

在解决雌性雌蕊的进化和维持方面，理论工作远远超过了经验研究。雌性雌蕊是一种特殊的交配系统，在这种交配系统中，单个植物要么是雌性的，要么是两性的。本研究将探讨营养限制在影响雌蕊异株Sidalcea oregana ssp生殖分配模式中的重要性。一种原产于内华达山脉的多年生植物。对田间植物可利用的资源进行管理，并编制养分分配模式的记录。这项工作将是第一个解决营养分配模式在雌蕊异株物种的影响，它将阐明基于资源的论点的有效性，以维持雌蕊异株。这项研究还涉及山地多年生植物的资源利用模式，这一领域目前的知识特别薄弱。有关营养限制的信息可用于植被恢复计划。如今，越来越多的栖息地填海工程涉及使用本地物种。此外，园艺业对本地物种的高质量种子的需求日益增长。本研究的结果将有助于了解野生植物在原生生境中如何利用资源。//

Theoretical work has far out-paced empirical studies in addressing the evolution and maintenance of gynodioecy a specialized mating system in which individual plants are either female or hermaphroditic. The proposed study will explore the importance of the nutrient limitation in influencing reproductive allocation patterns in a gynodioecious population of Sidalcea oregana ssp. spicata, a perennial plant native to the Sierra Nevada. Resources available to plants in the field will bemanipulated and records of nutrient allocation patterns will becompiled. This work will be the first to address the implications of nutrient allocation patterns in a gynodioecious species and it will shed light on the validity of resource-based arguments for the maintenance of gynodioecy. This study also concerns resource use patterns in a montane perennial, an area in which current knowledge is especially weak. Information on nutrient limitation may be applied to programs of revegetation. Today, more and more habitat reclamation projects involve the use of native species. Moreover, there is a growing demand for high quality seeds from native species in the horticultural industry. Results from this study will contribute to understanding how resources are used by wild plants in native habitat. //