Studies on the South Indian Compositae. III. Karyomorphology of nine species of Blumea DC.

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  • III. Karyomorphology of nine species of <i>Blumea</i> DC.

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Karyomorphology of nine species of Blumea has been presented such as B. barbata (2n=16), B. fistulosa (2n=18), B. jacquemontii (2n=18), B. lacera var. glandulosa (2n=36), B. malcolmei (2n=16), B. menzbranacea var. gardneri (2n=18), B. oxyodonta (2n=18), B. virens (2n=18) and B. wightiana (2n=18).<br>Karyotypes of both the x=9 and x=8 species are moderately asymmetrical (2A and 2B). In finer details, the karyotypes of x=9 species are seen to be more specialized. Five x=9 species showed bimodal karyotypes and in all of them the short chromosomes greatly outnumbered the long ones.<br>Species possessing bimodal karyotypes showed more advanced morphological characters, and this appears to indicate an association between karyotype specialization and morphological advancement of plants in the genus.

Journal

  • CYTOLOGIA

    CYTOLOGIA 47 (1), 153-162, 1982

    Japan Mendel Society, International Society of Cytology

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