Morphological variation within the Edraianthus graminifolius complex (Campanulaceae) from the central Balkan Peninsula - Evidence from multivariate statistical analysis

详细信息	查看全文 | 推荐本文 |

• 作者：Tamara Raki膰 ; ^{tamaraz@bio.bg.ac.rs} ; Ivana 沤ivkovi膰 ^{ivanaz@bio.bg.ac.rs} ; Jasmina &Scaron ; in啪ar-Sekuli膰 ^{jsekulic@bio.bg.ac.rs} ; Branka Stevanovi膰 ^{bstev@bio.bg.ac.rs} ; Vladimir Stevanovi膰 ^{vstev@bio.bg.ac.rs} ; Dmitar Laku&scaron ; i膰 ^{dlakusic@bio.bg.ac.rs}
• 关键词：Balkans ; Edraianthus graminifolius ; Morphometry ; Statistics ; Differentiation
• 刊名：Flora - Morphology ; Distribution ; Functional Ecology of Plants
• 出版年：2012
• 期刊代码：5_03672530
• 类别：abs
• 出版时间：May, 2012
• 卷：207
• 期：5
• 页码：354-364
• 文件大小：2228 K

摘要

The Edraianthus graminifolius complex is one of the most interesting groups within the genus Edraianthus DC (Campanulaceae). The plants inhabit a variety of habitats and there is a micro-geographic and ecological differentiation of populations, accompanied by pronounced morphological variation. Hence, it is not surprising that this complex is taxonomically a very controversial group. On the one hand it is described to comprise only two to four taxa, including subspecies, and on the other, a classification comprising 23 taxa of the rank of species and subspecies has been proposed.

The basic aim of the present study therefore was to quantify the morphological and anatomical differences within and between populations of this complex from the central and western parts of the Balkan Peninsula (Serbia, Montenegro, Bosnia and Herzegovina, and Croatia), and to determine whether there are, in fact, clear morphological differences between these populations.

For these purposes, several multivariate statistical analyses (PCA - principal component analysis, CDA - canonical discriminant analysis, clustering UPGMA analysis based on Mahalanobis distances, and CA - correspondence analysis) of vegetative and generative plant organs have been carried out.

The morpho-anatomical analysis of 704 individuals from 44 populations has confirmed that there are several morphologically distinct groups of populations in the central Balkans, between which no strict morphological discrimination exists. Some of these distinct groups of populations correspond to taxa E. caricinus Schott, Nyman, & Kotschy, E. montenegrinus Horak, E. jugoslavicus Laku拧i膰 and E. vesovicii R. Laku拧i膰, while others were identified for the first time in this study.