Morphological and leaf anatomical variability of Crocus cf. heuffelianus Herb. (Iridaceae) populations from the different habitats of the Balkan Peninsula (original) (raw)
Related papers
Comparative anatomical study of the taxa from series Verni Mathew (Crocus L.) in Serbia
2017
The comparative leaf anatomy of three Crocus L. taxa from series Verni Mathew ( Crocus heuffelianus Herb., Crocus tommasinianus Herbert and Crocus kosaninii Pulevic) in Serbia is introduced. The general outlook of the cross sections of the leaves was defined with microphotographs. More precisely, leaf shape, leaf surface, mesophyll parenchyma and vascular bundle features were examined. The biggest differences were found at the level of vascular bundles (xylem area, phloem area, sclerenchyma area) and leaf blade features (section height, section length, arm length, white stripe width, lacuna area). In general, listed parameters had the lowest values in C. tommasinianus population, while the highest values could be found in population of C. heuffelianus . Further investigations should be focused on discovering more localities followed by surveying the ecological factors of the habitats.
An anatomical and ecological study on some Crocus L. taxa (Iridaceae) from the west part of Turkey
A comparative anatomical and ecological study was made of nine Crocus taxa (C. gargaricus subsp. gargaricus, C. chrysanthus, C. biflorus subsp. nubigena, C. flavus subsp. dissectus, C. olivieri subsp. istanbulensis, C. candidus, C. pallasii subsp. pallasii, C. cancellatus subsp. mazziaricus, C. pulchellus) from the west part of Turkey. Leaf anatomy has been differentiated among the taxa. The lower surfaces of the arms and the sides of keels have projections only in C. biflorus subsp. nubigena. Anticlinal walls of epidermis in stomatal regions are generally sinuous, but sometimes straight. There are four large vascular bundles in the margin of the arms and on the corner of the keels. Sclerenchymatous tissue was observed in phloem and xylem poles of larger bundles in C. flavus subsp. dissectus, C. olivieri subsp. istanbulensis, C. candidus, C. pallasii subsp. pallasii, while it was observed only in the phloem pole in C. gargaricus subsp. gargaricus, C.
Turk J Bot 34 (2010) 171-178 © TÜBİTAK doi:10.3906/bot-0906-53, 2010
Abstract:In this study, relationships among the 15 taxa of the genus Crocus L. distributed in Turkey were analysed using 29 morphological and 4 anatomical characters. Analysis of the data set utilising maximum parsimony criterion with Branchand-Bound search algorithm yielded 32 most parsimonious trees. Bootstrap analysis with the majority rule consensus algorithm generated a consensus tree supporting some branches. Our data mostly did not agree with the previous sectional and serial treatments. The most interesting result was the condition of Crocus pallasii,which was previously included in the section Crocus. C. pallasiishowed a sister group relationship with C. cancellatusfrom the section Nudiscapusseries Reticulati in this work. Previously described sections Flavi and Reticulatidid not show monophyly for their taxa based on our analysis (e.g., C. gargaricus and C. cancellatus of the section Reticulatiwere not monophyletic based on our data set). Interestingly, C. gargaricus of the section Reticulati was sister to the section Nudiscapus series Biflori members, specifically with C. leichtlinii. Sectional and serial treatment of C. fleischeri was consistent with our results. Our data suggest that more morphological data along with molecular data are needed for reliable conclusions on the studied taxa.
Phytotaxa, 2015
The aim of this study was to quantify and compare morphological variation between 14 populations of J. heuffelii distributed in Serbia, Romania, Bulgaria and Macedonia and to correlate their morphological characteristics with the geomorphologic and bioclimatic parameters of their habitats. For these purposes, several multivariate analyses (PCA, CDA, clustering UPGMA analysis based on Mahalanobis distances, MCA, and Spearman's correlation) of the vegetative and generative plant organs were performed. Analyses showed that apart from the overall morphological variability, which is related to environmental conditions, there are four groups of populations that are morphologically distinct. Although the results clearly indicate the significant influence of environmental factors (elevation, aspect and slope) on the morphology of the species, we found that recent bioclimatic conditions, geological substratum and geographical position are only of secondary importance in the pattern of morphological variation in J. heuffelii in the area investigated.
Flora - Morphology, Distribution, Functional Ecology of Plants, 2012
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 CAcorrespondence 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 Lakušić and E. vesovicii R. Lakušić, while others were identified for the first time in this study.
A new Serbian endemic species of the genus Crocus (Iridaceae)
2017
Recent research within the genus Crocus (Iridaceae) let us doubt that Crocus adamii Gay from Serbia represents the same taxon as C.adamii s. str. of the locus classicus in the Caucasian Mountains. The latter belongs to a group of crocuses, which is distributed from the Anatolian Diagonal, a mountain belt in inner Anatolia, to Iran and the Caucasian Mountains. To infer ( i ) if the Serbian C. adamii represents a new species and ( ii ) its taxonomical and phylogenetic affiliation within the genus we combined morphological and molecular investigations. The results show the presence of two morphologically and molecularly differentiated lineages, which both share a close relationship e.g. to C. alexandrii , C. chrysanthus , and C. weldenii but not to C. adamii s.str., which indicates a new species. As a result we here describe C. randjeloviciorum to honor the Serbian botanists Novica and Vladimir Ranđelovic.
Flora, 2010
In this paper adaptive morpho-anatomical traits are described of the species Teucrium fruticans, T. arduini, T. scordium, T. botrys, T. chamaedrys, T. flavum, T. montanum and T. polium in Serbia and Montenegro (Balkan peninsula). These characters of leaves and stems were related with chorology and ecology of the species. The research is based on 63 populations sampled across the region, from Eu-Mediterranean coastal areas up to the mountains and to temperate deciduous forest regions of Serbia. Descriptive statistics were calculated for 22 quantitative characters and multivariate analyses were performed to describe the structure of variability (PCA), to identify the significance of differences between the species studied (MANOVA), and to measure distances between them (CDA). In contrast to the widely distributed species Teucrium chamaedrys, T. montanum and T. polium, the species T. fruticans, T. arduini, T. scordium, T. botrys and T. flavum have narrow ecological ranges. Morphoanatomical analysis gives evidence that all species except T. scordium are xerophytes with distinctly xeromorphic structures. But each of them is characterized by specific structural adaptations to the more or less arid environmental conditions. The perennial herbaceous T. scordium, from the humid habitats, belongs to the mesophytic plant type. The results show that structures of the analyzed species are only partially related with the phylogenetic position of the respective taxa. Multivariate analysis indicates that the morpho-anatomical similarity of some species with each other can be characterized as convergently developed rather in adaptation to xeric ecological conditions that as based on phylogenetic relations.