青海四个青稞栽培品种的核型分析研究  

Study on the Karyotype Analysis of Four Cultivated Highland Barley of Qinghai

作　　者：李凤珍[1] 马晓岗[2] 段瑞君[1] 

机构地区：[1]青海大学生态环境工程学院,青海西宁810016 [2]青海大学农林科学院作物所,青海西宁810016

出　　处：《青海农林科技》2012年第3期1-3,共3页Science and Technology of Qinghai Agriculture and Forestry

基　　金：国家自然基金"裸大麦的形成机理研究"(31160036)

摘　　要：用根尖压片法对青海栽培青稞染色体核型进行研究,旨在为今后青稞栽培品种的培育提供理论依据。结果表明:青海栽培青稞是二倍体,体细胞染色体数为2n=2x=14,染色体基数为x=7,紫青1号的核型公式是2n=2x=14=10m+4smsat,昆仑164的核型公式是2n=2x=14=10m+2smsat+2msat。这两个品种核型类型都属于Stebbins-Ⅱ;北青3号的核型公式是2n=2x=14=12m+2smsat,青稞1149的核型公式为2n=2x=14=10m+2sm+2msat,这两个品种核型类型都属于Stebbins-Ⅰ。For the purpose of researching the classification of the main cultivated highland barley varieties in Qinghai province on cell level, the karyotypes of four highland barley cuhivars were studied by the method of squash with the young roots. The result indicates that： highland barley is diploid, which have seven pairs chromosomes. The karyotype forluma of hulless barley ziqing 1 ＇ s is 2n = 2x = 14 = 10m ＋ 2smsat ＋ 2msat, kunlun 164＇ s is 2n = 2x = 14 = 10m ＋ 2smsat ＋ 2msat, Their karyotypes were Stebbins - II ; that The karyotype forluma of hulless barley beiqing＇ s is 2n = 2x = 14 = 12m ＋ 2smsat, hulless barley 1149＇ s is 2n = 2x = 14 = 10m ＋ 2sm ＋ 2msat, Their karyotypes were Stebbins - I

关 键 词：青稞 栽培品种 核型分析 染色体 

分 类 号：S512.3[农业科学—作物学]