摘要
报道了苏铁属(CycasL.)2种植物的染色体数目及其核型。它们的体细胞染色体数目均为2n=2x=22,核型均属3B型。核型公式分别是:海南苏铁C.hainanensisK(2n)=2x=22=4m+2sm+4st+12T,仙湖苏铁C.szechuanensissubsp.fairylakeaK(2n)=2x=22=2m+4sm+4st+12T。两种苏铁的核型均为首次报道。支持基于染色体资料把苏铁属分为两个类群的观点。
Chromosome numbers and of the two Cyccls species from China are all 2n=2x=22, and the karyotypes are classified to be 3B according to stebbin＇s category. The karyotype formulas are 2n=2x=22=4m＋2sm＋4st＋12T for C. hainanensis, and 2n=2x=22=2m＋4sm＋4st＋12T for C. szechuanensis subsp.fairylakea. The two karyotypes are reported for the first time. The results support that Cycas can be divided into two groups based on the chromosome data.
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2005年第6期511-515,共5页
Journal of Tropical and Subtropical Botany
基金
国家自然科学基金项目(30070062)资助
关键词
苏铁属
染色体
核型
Cyccls
Chromosome
Karyotype
