大果沙枣和尖果沙枣的核型分析  

Karyotype Analysis of Elaeagnus moorcroftii Wall.ex Schlecht. and Elaeagnus oxycarpa Schlecht

作　　者：于玮玮[1] 阎国荣[1] 

机构地区：[1]天津农学院园艺系,天津300384

出　　处：《北方园艺》2010年第6期141-143,共3页Northern Horticulture

基　　金：天津市农业科技成果转化与推广资助项目(0702150)

摘　　要：以萌发种子的根尖为材料,对大果沙枣和尖果沙枣的进行了染色体核型分析。结果表明:2种沙枣体细胞染色体较小,染色体数目均为2n=2x=28;大果沙枣染色体核型有公式为2n=2x=28=10m+10sm+8st,核型不对称系数为68.61%,属于3B型;尖果沙枣染色体核型公式为2n=2x=28=12m+10sm(2SAT)+6st,核型不对称系数为67.33%,属于2B型。The karyotype analysis was carried out on Elaeagnus moorcroftii Wall. ex Schtecht. and Elaeagnus oxycarpa Schlecht using root tips of germinating seeds as materials. The results indicated that there were 28 small chromosomes in two Elaeagnus spp, which were in good agreement with previous results~ The karyotype formula of E. moorcroftii Wall. ex Schlecht was 2n=2x=28 =10m＋10sm＋8st; the AS. K was 68. 61% ,and it belonged to＂3B＂type of Karyotypic. The karyotype formula of E. oxycarpa Schlecht was 2n= 2x= 28= 12m＋10sm（2SAT ）＋6st ; the AS. K was 67. 33%,and it belonged to＂2B＂type of Karyotypic.

关 键 词：大果沙枣 尖果沙枣 染色体 核型分析 

分 类 号：S665.1[农业科学—果树学]