百合科4种植物染色体的核型比较  

The Liliaceae Four Plant Chromosome Karyotype Analysis

作　　者：李国泰 

机构地区：[1]通化师范学院生命科学学院,吉林通化134002

出　　处：《中国林副特产》2017年第6期21-25,共5页Forest By-product and Speciality in China

摘　　要：采用植物染色体常规压片法[1],结合显微摄影技术[2],对百合科葱属4种植物:洋葱、大蒜、小根蒜、耐寒铁岭葱王进行了染色体核型分析。结果如下:洋葱、大蒜、耐寒铁岭葱王的染色体数目均为2n=2x=16。其核型公式分别为2n=2x=16=12m+2sm,2n=2x=4M+8m+4st,2n=2x=14m+2st.小根蒜染色体数目为2n=4x=32,为典型的四倍体。洋葱,耐寒铁岭葱王,小根蒜的核型比较相近,均属进化程度较低的2A型。大蒜核型与它们的差异较明显,为进化程度较高的2B型。The plant chromosome conventional pressure plate method,combined with microscopic photography,Liliaceae onions are all kinds of four plants:Allium cepa,A.Sativum,Bulbus Allii,A.fistulosumkaryotype analysis.The results are as follows:onions,garlic,cold Tieling onion king of chromosome number is 2 n = 2 x = 16.The karyotype formula was 2 n = 2 x = 16 = 12 m +2 sm,2 n = 2 x = 4 M+ 8 m+4 st,2 n = 2 x = 14 m+ 2 st.Small root garlic chromosome number of 2 n= 4 x= 32,typical tetraploid.Onion,to cold Tieling onion king,root garlic karyotype similar are the evolution of less2 Atype.Garlic karyotype and their differences are more pronounced for the evolution of higher levels of type 2 B.

关 键 词：百合科 葱属 染色体 核型分析 

分 类 号：Q243[生物学—细胞生物学]