2006•Journal of Northwest Normal UniversityRequires access
The karyotypes of S.pachyneura and S.dzeurensis in Qinghai-Tibet Plateau
Yifeng Wang, Gong Hong-dong
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Abstract
The chromsome numbers and the karyotypes of S.pachyneura and S.dzeurensis from Qinghai-Tibet Plateau of China are studied.The result showes that the chromosome numbers are:S.pachyneura,2n=32,S.dzeurensis,2n=26,they are all diploid.The karyotype formulae are as follows:S.pachyneura,2n=2x=32=30m+2sm,karyotype belongs to 2B type;S.dzeurensis,2n=2x=26=18m+6sm+2st,karyotype belongs to 2B type.No satellites are found in these 2 species.