马蹄针和伞房决明的染色体核型与结瘤的关系  

The Relationship of Karyotype Analysis and Modulate of Sophora davidii and Cassia canymbosa

作　　者：殷爱华[1] 韩正敏[1] 韩素芬[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《南京林业大学学报（自然科学版）》2006年第1期98-100,共3页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：国家自然科学基金资助项目(30170765)

摘　　要：对马蹄针和伞房决明的染色体进行核型分析，马蹄针核型为K（2n）=2x=18=14m（8SAT）＋4sm，绝对长度变异范围为2．34～2．97μm，核型类型属2A型，能结瘤。伞房决明核型K（2n）=2x=28=28m（4SAT），绝对长度变异范围为1．48～2．19μm，核型类型属1A型，不能结瘤。According to karyotype analysis, caryotype formula of Sophora davidii was shown to have karyotype K（2n）=2x=18=14 m （8SAT）＋4 sm,which belongs to 2A type. The ab solute lengths of chromosomes of S. davidii rang from 2.34 μm to 2.97 μm. S. davidii can nodulate in field. Cas：ia canymbosa was found to have the karyotype K（2n）=2x=28 m （4SAT）, which belongs to 1A type. The absolute lengths of chromosomes of C. canymbosa range from 1.48 to 2. 19 μm, C. canyrnbosa can not nodulate in field.

关 键 词：马蹄针 伞房决明 结瘤 核型分析 

分 类 号：S722[农业科学—林木遗传育种]