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Abstract
We demonstrate the results of morphometric investigations of hybrids in Veronica subg. Pseudolysimachium (V. × altaica Kosachev und V. × kolyvanensis Kosachev et Shmakov) and their parents. Based on PCoA analysis with seven morphological characters, we reveal an intermediate position of the investigated hybrids and the most important taxonomic characters: ratio of length and width of the lamina of the upper leaves, height of plants, length of the longest corolla lobe and calyx lobe, presence of hairs on the calyx and their position, as well as the length of hairs on the internode below the inflorescence.
Highlights
Härle (1932) suggested that hybridization played an important role in the diversification of the subgenus and groups of morphological races („Formenkreise“) are connected by transitional forms
In the present contribution we present the results of the morphometric analysis of V. spicata and two of its hybrids in the Altai region with the aim to test the hypothesis of hybridization using morphometric analysis and the potential for introgression between parent species via these hybrids
V. × altaica is separated from the putative parent V. pinnata by all characters but not from its other putative parent, V. spicata
Summary
Härle (1932) suggested that hybridization played an important role in the diversification of the subgenus (formerly variously classified as section or separate genus) and groups of morphological races („Formenkreise“) are connected by transitional forms. Recent molecular results partly support these species and emphasized the many transitional forms (Bardy et al, 2011). Pseudolysimachium a number of hybrids have been proposed involving V. spicata and its relatives (Härle, 1932; Fischer, 1974; Klokov, 1976; Tsvelev, 1981; Kosachev, 2003, Kosachev, German, 2004; Kosachev, Ebel, 2010; Bardy et al, 2011; Kosachev et al, 2013, 2016, 2017). × altaica Kosachev (V. spicata × V. pinnata), V. × czemalensis Kosachev et Albach (V. porphyriana × V. incana), V. × grisea Kosachev et A.L. Ebel (V. incana × V. longifolia), V. × schmakoii Kosachev (V. porphyriana × V. longifolia), V. Ebel (V. incana × V. longifolia), V. × kolyvanensis Kosachev et Shmakov (V. spicata × V. spuria), V. × schmakoii Kosachev (V. porphyriana × V. longifolia), V. × sessiliflora Bunge (V. porphyriana × V. pinnata)
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