Dissertation Research: Systematics of Prunus subgenus Amygdalus L. (ROSACEAE)

论文题目：扁桃亚属系统学研究。扁桃（Prunus dulcis）和桃（Prunus persica）是扁桃亚属（Prunus subgenus Amygdalus L.）蔷薇科（Rosaceae）。关于扁桃属植物分类的争论，一组约33种，仍然存在，并更新系统的治疗是必要的，以解决这些争议。本项目的目标是：1）阐明扁桃亚属的进化关系; 2）对扁桃亚属进行分类学处理，包括种的分类、检索表、分布图、插图和生态注释; 3）鉴定扁桃地方品种的近缘野生亲缘关系。植物育种家可以使用结果作为一个框架，以解决驯化和栽培杏仁的起源令人困惑的问题，并更好地了解极其有限的基因库，可用于杏仁和桃子的未来育种计划。保护生物学家可以使用分类学处理来做出关于保护什么物种和在哪里的明智决定。该手册将为生态学家和自然资源保护者提供识别物种的实用指南，根据实地可识别的特征向他们提供检索表和核对表，并提供地理和生态信息，这将有助于全面记录世界农业生物多样性。 由于杏仁和桃子在世界各地的经济重要性，公众也会对这项工作的结果感兴趣。

Dissertation Research: Systematics of Prunus subgenus Amygdalus L. (ROSACEAE)Almonds (Prunus dulcis) and peaches (Prunus persica), two economically important fruit crops, are members of Prunus subgenus Amygdalus L., in the Rose family (Rosaceae). Controversy over the classification of Amygdalus L., a group of about 33 species, still exists and an updated systematic treatment is necessary to resolve these controversies. The objectives of this project are to 1) elucidate evolutionary relationships within Prunus subgenus Amygdalus, 2) produce taxonomic treatment of this group, including species circumscriptions, identification keys, distribution maps, illustrations and ecological notes and 3) Identify closest wild relatives of almond landraces.This work will have numerous positive impacts. Plant breeders can use the results as a framework to resolve puzzling questions of domestication and the origin of cultivated almonds and to better understand the extremely limited gene pool that is available for future breeding programs of both almonds and peaches. Conservation biologists can use the taxonomic treatment to make informed decisions about what species to conserve and where. The treatment will provide ecologists and conservationists with a practical guide to identify species by providing them with keys and checklists based on features that can be recognized in the field, and with geographical and ecological information, which would contribute to the overall documentation of world agro-biodiversity. Because of the economic importance of both almonds and peaches throughout the world, the general public will also be interested in the results of this work.