摘要
对产于青藏高原风毛菊属(Saussurea DC.)中的两个亚属——雪莲亚属(Subgen.Amphilaena)和风毛菊亚属(Subgen.Saussurea)中五个种的染色体数目和核型做了研究.结果表明,五个种的染色体数目和核型如下:唐古特雪莲(S.tangutica)2n=2x=34=16m+14sm+4st,多鞘雪莲(S.polycolea),2n=2x=32=24m+8sm,尖苞风毛菊(S.subulisqua-ma)2n=2x=30=10m+20sm,这三种风毛菊属植物均属2B型;蒙古风毛菊(S.mongolica)2n=2x=26=10m+12sm+4st,属2A型;乌苏里风毛菊(S.ussuriensis)2n=2x=24=2m+14sm+8st,属3B型;这五个种均为二倍体,并且在染色体中均未发现随体.
The chromosome numbers and the karyotypes were studied on 5 species of Subgen. Ampkilaena and Subgen. Saussurea in Saussurea from the Qinghai-Tibetan Plateau. The result shows that the chromorome numbers and the karyotypes are as follows: S. tangutica 2n = 2x = 34 = 16m + 14sm + 4st, S. polycolea 2n = 2x = 32 = 24m + 8sm, S. subulisquama 2n = 2x = 30 = 10m + 20sm, their karyotypes belong to stebbings 2B type; while S. mongolica 2n = 2x = 26 = 10m + 12sm + 4st, karyotype belongs to stebbings 2A type; S. ussuriensis 2n = 2x = 24 = 2m + 14sm + 8st, karyotype belongs to stebbings 3B type; They are all diploid, and no satellites have been found in these 5 species.
出处
《四川大学学报(自然科学版)》
CAS
CSCD
北大核心
2008年第5期1221-1227,共7页
Journal of Sichuan University(Natural Science Edition)
基金
甘肃省教委(041-15)
甘肃省科技厅(3ZS041-A25-008)
甘肃省自然科学基金(3ZS051-A25-024)
关键词
雪莲亚属
风毛菊亚属
核型
青藏高原
Subgen. Amphilaena, Subgen. Saussurea, karyotype, qinghai-tibetan plateau