| Autor: |
ALIJANPOOR, Behnaz, AZIZI, Hejraneh, MASHAYEKHI, Seyamak, FALLAH-HOSSEINI, Leila, KHODAYARI, Hamed |
| Předmět: |
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| Zdroj: |
Biharean Biologist; Dec2019, Vol. 13 Issue 2, p66-70, 5p |
| Abstrakt: |
Echinops is a genus of Asteraeceae that is represented in Iran by 72 species Six species of the genus (E. robustus, E. polygamous, E. orientalis, E. ilicifolius, E.pungens, E. chardinii) from twelve different Iranian populations, belonging to three sections (Oligolepis, Ritropsis, Echinops), are studied cytologically. Somatic chromosome numbers of four species are reported for the first time. Chromosome number 2n=2x= 34 is reported for the first time in section Oligolepis. The chromosome numbers of the studied species and populations were different among members of sections (2n=2x=30, 32 and 34). The chromosomes were mainly metacentric or sub-metacentric. The species differed significantly in the total chromosome length and Mean chromosome length indicating the role of quantitative genomic changes in the Echinops species diversification. The Echinops species were placed in 3A and 3B classes of Stebbins karyotype symmetry. Cluster analysis of karyotype features indicated that cytological studies did not support sectional classification. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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