Cytology of Rutaceae and Simarubaceae

Desai, Sharda

doi:10.1508/cytologia.25.28

Cited by 15 publications

(1 citation statement)

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“…The chromosome number of S. japonica has been reported as n=16 (Desai 1960), 2n=16 (Gurzenkov 1973), 30 (Simonet and Miedzyrzecki 1932;Guerra 1984Guerra , 1985Johnson and Taylor 1989) or 30-32 (Rudyka 1990). While that of S. reevesiana is 2n=60 (Johnson and Taylor 1989), that of S. arisanensis is still unknown.…”

Section: Introductionmentioning

confidence: 99%

Karyotypic analysis of Skimmia japonica (Rutaceae) and related species

2006

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A karyotypic analysis of three species of Skimmia (Rutaceae) in East Asia was performed that examined 88 individuals from 53 localities. Chromosome numbers of S. japonica, S. reevesiana and S. arisanensis were 2n=30, 31, 32 (=30+0-2B), 2n=60 and 2n=60, respectively. The chromosome number of S. arisanensis was reported for the first time. All species had a large chromosome pair or quartet (the first pair or quartet) with a median-submedian centromere in the karyotype. In S. japonica the arm ratio of this first pair was considerably variable and showed a geographical pattern. In the northern half of the distribution range, Sakhalin, Hokkaido, Honshu, Shikoku and part of Kyushu, the arm ratio was 1-1.2, while in the southern half, part of Kyushu, Ryukyu and Taiwan, the arm ratio was very variable and ranged from 1.2 to 2.4. In S. japonica the first pair was sometimes rather heteromorphic; however, the heteromorphism was not related to sex of the plant.

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