Anderson F. Santos, A. D. DO CARMO, V. C. Harthman, M. Romagnolo, Luiz A. B. Souza
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引用次数: 2
Abstract
Abstract. The Rubiaceae tribe Psychotrieae sensu lato and its two largest genera, Psychotria L. and Palicourea Aubl., have been considered taxonomically controversial for a long time. We aimed to identify structural features of the ontogeny of the fruits and seeds with taxonomic potential for the tribe by using species of these two genera, and Rudgea jasminoides (Cham.) Müll.Arg. The samples were obtained from a herbarium and from Brazilian state parks, and sectioned by using a rotation microtome. The fruits were found to be derived from an inferior ovary, and were characterised by a fleshy mesocarp and sclerenchymatic sinuate pyrene. The seeds were pachychalazal and arillate. The fruit was classified as a pomaceous drupoid nuculanium. The investigation showed the utility of some fruit features to discriminate species. Our study also showed that ontogenetic features of fruits and seeds are very homogeneous in Palicourea and Psychotria, which supports the inclusion of both genera in the tribe Psychotrieae.
摘要茜草科茜草属(psychotriae sensu lato)及其最大的两个属，茜草属(psychotriae L.)和茜草属(palicourrea Aubl.)。很长一段时间以来，人们一直认为它们在分类学上存在争议。本研究利用这两个属的种，对该部落具有分类潜力的果实和种子的个体发育结构特征进行鉴定。Mull.Arg。样品来自植物标本室和巴西州立公园，并使用旋转切片机进行切片。发现果实来自下位子房，并以肉质中果皮和厚壁组织的波纹芘为特征。种子厚合点，具花梗。该果实被归类为果状核桃仁。结果表明，果实的某些特征可用于品种鉴别。我们的研究还表明，Palicourea和Psychotria的果实和种子的个体发生特征非常一致，这支持了这两个属都包含在Psychotrieae部落中。
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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