狗头枣染色体数目与核型分析  

Chromosome Number and Karyotype Analysis of Chinese Date Goutouzao

作　　者：齐向英[1] 李宁[1] 陈宗礼[1] 

机构地区：[1]延安大学生命科学学院陕西省区域生物资源保育与利用工程技术研究中心,陕西延安716000

出　　处：《安徽农业科学》2008年第26期11305-11306,共2页Journal of Anhui Agricultural Sciences

基　　金：陕西省重大科技攻关项目(2006KZ05-G4)

摘　　要：[目的]研究狗头枣的染色体数目与核型。[方法]以狗头枣幼嫩茎尖为试验材料,采用酶解去壁低渗法观察染色体,并作核型分析。[结果]狗头枣细胞经改良品红染色、压片后获得良好的有丝分裂相。[结论]狗头枣的染色数目为2n=24,核型为2B型,核型公式为:2n=2X=24=5 m+5 sm+2 st。[ Objective ] The chromosome number and karyotype in Chinese date Goutouzao were studied. [ Method] Taking the young shoot tips of Chinese date Goutouzao as the experimental materials, chromosome were observed by digestion of the cell wall with enzyme. [ Result ] The better mitotic phase was obtained after dyeing by improved stained magenta. [ Conclusion] The chromosome number of Goutouzao was 2n =24. Karyotype type was 2B, and karyotype formula was 2n =2X =24 =5 m ＋5 sm ＋2 st.

关 键 词：狗头枣 染色体 核型 

分 类 号：S665.1[农业科学—果树学]