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Korean J. Pl. Taxon > Volume 26(3); 1996 > Article
Korean Journal of Plant Taxonomy 1996;26(3): 183-190.
doi: https://doi.org/10.11110/kjpt.1996.26.3.183
바위솔속 식물 3 종의 염색체 연구
Chromosome studies of Korean Orostachys species ( Crassulaceae )
In Sun Kim
Chromosomes of three Korean Orostachys species were studied at meiosis. Examined species were O. japonicus, O. malacophyllus, and O. sikokianus. Their meiotic chromosome number was n=12 in all species. Chromosome pairing at metaphase I was normal with 12 bivalents that formed either open rings or rods. Several nucleolar organizing regions were frequently observed with prophase I chromosomes in microsporocytes. No B chromosome was detected. Pollen fertility was relatively high in all species exhibiting no less than 90%. Chromosomal variation of Orostachys species in Korea appears rather simple on the basis of the chromosome data presented in the current study. This is the first report on meiotic chromosome information for the genus Orostachys.
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