Chromosome numbers, karyotypes and 4C DNA contents of Achillea sipikorensis Hausskn. and Bornm. and Achillea sintenisii Hub.-Mor. (Asteraceae)


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Turkoglu Ş. , Akpulat H. A.

CARYOLOGIA, cilt.57, ss.244-249, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The cytological features including chromosome numbers, detailed chromosome measurements and 4C DNA values were reported in Achillea sipikorensis and A. sintenisii from Turkey. Total chromosome lengths, relative lengths, long/short arm ratios and centromeric index of mitotic chromosomes were calculated. Somatic chromosome numbers were found to be 2n=2x=18 in A. sipikorensis and 2n=4x=36 in A. sintenisii for the first time. The mean of chromosome length ranged from 6.92+/-0.08 to 9.23+/-058 mum in A. sipikorensis and from 6.54+/-0.91 to 9.62+/-0.79 mum in A. sintenisii. The karyotype consists of six pairs metacentric chromosomes, two submetacentric pairs and a subtelocentric pairs in A. sipikorensis and of fifteen pairs metacentric chromosomes, a submetacentric pairs and two subtelocentric pairs in A. sintenisii. The nuclear DNA C-value was estimated to be 4C=24.63+/-0.01 pg of A. sipikorensis and 4C=35.73+/-0.05 pg of A. sintenisii.