5个芍药属伊藤杂种的倍性鉴定及核型分析  

Ploidy Identification and Karyotype Analysis of Five Itoh Hybrid Peonies

作　　者：杨柳慧[1,2,3] 张建军[1,2,3] 王琪[1,2,3] 朱炜[1,2,3] 张滕[1,2,3] 于晓南[1,2,3] 

机构地区：[1]北京林业大学园林学院,北京100083 [2]花卉种质资源创新与分子育种北京重点实验室,北京100083 [3]国家花卉工程技术研究中心.北京100083

出　　处：《植物研究》2017年第4期535-541,共7页Bulletin of Botanical Research

基　　金：北京市教育委员会科学研究与研究生培养共建项目资助(BLCXY201615);国家自然科学基金(31400591)~~

摘　　要：采用常规压片法,对5个芍药属伊藤杂种进行了核型分析。结果表明:5个芍药属伊藤杂种的品种均为三倍体(2n=3x=15),核型不对称系数为61.02%~62.41%,核型类型均属于2A型,所有品种的核型均由中部(m)、近中部(sm)和近端部(st)的着丝粒染色体组成。本研究首次摸清了芍药属伊藤杂种的核型背景,为品种改良提供了细胞学资料。We studied the karyotypes of five Itoh hybrid peonies by using squashing method. Five Itoh hybrid peonies were triploid（2n = 3x = 15 ）. Asymmetry index ranged in 61.02% -62.41% , and the karyotypes of these cuhivars were 2A. The karyotypes of the tested Itoh hybrid peonijes were mainly made of median region, submedian region and subterminal region, without satellite. Our result provided cytological information and polyploidy resources for breeding research for the first time.

关 键 词：伊藤杂种 三倍体 核型参数 

分 类 号：S628.12[农业科学—园艺学]