硬枝黄蝉染色体计数与核型分析  

Chromosome Number and Karyotype of Allamanda neriifolia

作　　者：郭蓉[1] 申艳红[1] 

机构地区：[1]福建农林大学园艺学院园艺植物遗传育种研究所,福建福州350002

出　　处：《亚热带植物科学》2015年第2期127-129,共3页Subtropical Plant Science

基　　金：国家科技支撑计划子课题(No.2007BAD07B03);福建农林大学本科教学改革项目(No.111412103)

摘　　要：以硬枝黄蝉Allamanda neriifolia幼胚为试验材料,对其体细胞染色体进行计数与核型分析。结果表明,硬枝黄蝉幼胚细胞含9对染色体,由中部或近中部着丝粒染色体构成。核型公式为2n=2x=6sm+12m。核型不对称系数为58.95%,核型分类属于2A型。The chromosome number and karyotype of Allamanda neriifolia were studied using immature embryos as experimental materials. The results showed that the embryo cells normally contain 9 pairs of chromosomes, and all chromosomes were metacentric or submetacentric chromosomes. The karyotype formula was 2n=2x=6sm＋12m. The karyotype was 2A type, and the asymmetry index was 58.95%.

关 键 词：硬枝黄蝉 染色体 核型分析 

分 类 号：Q343.22[生物学—遗传学] S685[农业科学—观赏园艺]