Note on the cytology ofCrocus

Karasawa, Kôtarô

doi:10.1007/bf01784831

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…(ii) Crocus ancyrensis was another endemic specious for Turkey. Chromosome number was reported as 2n = 10 (Karasawa 1950;Mathew 1984). In this study the chromosome number was found as 2n = 6.…”

Section: Resultsmentioning

confidence: 99%

Karyological studies on someCrocusL. taxa from Turkey

2012

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Chromosome numbers and morphometric parameters of five Crocus L. taxa were examined. Except C. specious Bieb. subsp. specious, and C. olivieri Gay subsp. olivieri, the other 3 taxa, C. abantensis T. Baytop et Mathew, C. ancyrensis (Herbert) Maw, and C. biflorus Miller subsp. pulchricolor (Herbert) Mathew all are endemic for Turkey. The chromosome numbers of C. abantensis 2n = 8 chromosomes, six of them metacentric and two were submetacentric, C. ancyrensis and C. olivieri subsp. olivieri both had 2n = 6 chromosomes and all the chromosomes were subtelocentric, finally C. specious subsp. specious and C. biflorus subsp. pulchricolor both had 2n = 8 chromosomes and all were submetacentric. Although some of the taxa chromosome numbers were known from previous studies, in this study some different counts were and their detailed karyotypes were presented.

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Section: Resultsmentioning

confidence: 99%

Karyological studies on someCrocusL. taxa from Turkey

2012

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“…Uslu et al (2012) states that the endemic taxon for Turkey, chromosome number of C. abantensis was found 2n = 8, but previously chromosome number of this taxon was reported as 2n = 16 by Baytop et al (1975) and Mathew (1984). Similarly, although chromosome number of C. ancyrensis was reported as 2n = 10 by Karasawa (1950) and Mathew (1984), chromosome number was found as 2n = 6 by Uslu et al (2012). All of these makes the difficult to understand the genus taxonomically and makes species identification doubtful.…”

Section: Introductionmentioning

confidence: 99%

The Evaluations and Comparisons of Nuclear and Chloroplast DNA Regions Based on Species Identification and Phylogenetic Relationships of Crocus L. Taxa

Yılmaz¹

2021

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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The genus Crocus L. (Iridaceae) consists of about 200 species distributed from western Europe and north west Africa to western China. The genus is taxonomically very problematic and day after day it becomes more difficult to understand the relationships between Crocus species because of the identification of new species. Recently, the studies based on DNA sequences are frequently used for the solution of taxonomic problems, the determination of species diversity and especially the evaluation of phylogenetic relationships among the studied taxa. The use of the regions belonging to nuclear DNA and especially chloroplast genome and the combinations of these regions are frequently recommended in many studies. However, there is no information about suitable barcoding regions that can be used for all plant groups. This study focuses on determination of the most succesful barcoding regions, understanding the species discrimination abilities and finally evaluation of phylogenetic relationships among the Crocus taxa using one region from nuclear DNA (ITS1-5.8S rRNA gene-ITS2) and four regions from chloroplast DNA (1. trnK-matK IGS, 2. partial psbA gene-psbA/trnH IGS-partial trnH gene, 3. rpoC1 gene, 4. partial trnL gene-trnL/trnF IGS-partial trnF gene). Sequence informations for related DNA regions were obtained from NCBI. As a result, it can be stated that the region which is only covering ITS1-5.8S rRNA gene-ITS2 separated the all taxa in species level and it is more beneficial for the phylogenetically evaluation of Crocus taxa. Furthermore, dendrogram show taxonomic problems belonging to some species in the genus such as C. biflorus taxa.

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“…In a region of the Balkan Peninsula also known as the center of Crocus diversity (Mathew, 1982), C. cf. heuffelianus possesses different chromosome numbers (2n = 10, 12, 14, 18, 19, 20, 22, and 23) (Mather, 1932;Karasawa, 1950Karasawa, , 1951Feinbrun, 1958;Brighton, 1973Brighton, , 1976Rafiński et al, 1978;Mosolygó et al, 2016). This phenomenon can be followed by crossing barriers; therefore, C. cf.…”

Section: Introductionmentioning

confidence: 99%

Morphological and leaf anatomical variability of Crocus cf. heuffelianus Herb. (Iridaceae) populations from the different habitats of the Balkan Peninsula

Raca¹,

Jovanović²,

Ljubisavljević³

et al. 2019

Turk J Bot

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Crocus cf. heuffelianus Herb. belongs to the series Verni Mathew and presents one of the most complex and critical taxa within the whole genus Crocus L. Depending on different authors, C. cf. heuffelianus is sometimes split into different taxa (e.g., C. scepusiensis (Rehmer & Wol.) Borbás ex Kulcz., C. vittatus Schloss. & Vuk., nom. illeg.). In order to disentangle the complicated taxonomical status of this species and to determine the degree of its morphoanatomical variability in the different environmental conditions, a comparative investigation of plant morphology and leaf anatomy of seven populations from the Balkan Peninsula was carried out. Morphometric analysis included meristic, quantitative, and qualitative parameters. To examine the leaf anatomy, fresh cross sections were made by manual microtome and stained with safranin and alcian blue. Statistical analyses, such as principal component analysis and canonical discriminant analysis revealed significant differences between populations, indicating the presence of distinct groups correlating with their geographical distribution. The largest contribution to the differentiation of analyzed populations is made by the characters that are related to corms, perigone segments, leaves, and anthers, followed by the general outlook of cross sections, palisade and spongy parenchyma, abaxial epidermal cells, and vascular bundle features. These findings confirm that from the morphoanatomical point of view Balkanian C. cf. heuffelianus presents an aggregate of species.

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Note on the cytology ofCrocus

Cited by 11 publications

References 3 publications

Karyological studies on someCrocusL. taxa from Turkey

Karyological studies on someCrocusL. taxa from Turkey

The Evaluations and Comparisons of Nuclear and Chloroplast DNA Regions Based on Species Identification and Phylogenetic Relationships of Crocus L. Taxa

Morphological and leaf anatomical variability of Crocus cf. heuffelianus Herb. (Iridaceae) populations from the different habitats of the Balkan Peninsula

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