Cytological comparison of 5S ribosomal DNA sites on somatic chromosomes in Aster × sekimotoi and speculation of its parental species (Asteraceae)
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概要
- 論文の詳細を見る
Somatic chromosomes of Aster rugulosus, A. scaber and A. × sekimotoi (Asteraceae) were investigated by the conventional aceto-orcein staining squash method and the fluorescence in situ hybridization (FISH) method using 5S ribosomal DNA (5S rDNA) probes. The three species commonly showed the chromosome number of 2n=18 and the chromosome complements consisted of eighteen m chromosomes. The present FISH detected two major and two minor 5S rDNA sites in A. rugulosus, two major 5S rDNA sites in A. scaber and two major and a minor 5S rDNA sites in A. × sekimotoi. The present study suggests that A. × sekimotoi could be a natural hybrid between A. rugulosus and A. scaber agreeing with Kitamura (1937).
- 財団法人染色体学会の論文
著者
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KOKUBUGATA Goro
Tsukuba Botanical Garden, National Science Museum
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Saito Yukiko
Graduate School Of Agriculture Ibaraki University:tsukuba Botanical Garden National Science Museum
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Saito Yukiko
Tsukuba Botanical Garden National Science Museum
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Kokubugata Goro
Tsukuba Botanical Garden National Science Museum:graduate School Of Agriculture Ibaraki University
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Kokubugata Goro
Tsukuba Bot. Gard. National Sci. Mus. Tokyo
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