6个萱草属栽培品种的核型分析  

Karyotype analysis of six Hemerocallis cultivars

作　　者：于瑶函 桑娟 王高鹏 张志国 秦巧平 刘翔 YU Yaohan;SANG Juan;WANG Gaopeng;ZHANG Zhiguo;QIN Qiaoping;LIU Xiang(School of Ecological Technology and Engineering,Shanghai 201418,China)

机构地区：[1]上海应用技术大学生态工程与技术学院,上海201418

出　　处：《应用技术学报》2025年第1期102-108,共7页Journal of Technology

基　　金：上海市科委地方院校能力建设项目(23010504800);上海市农业农村委员会科技兴农项目(2019-02-08-00-08-F01107);上海应用技术大学引进人才基金(YJ2019-25)项目资助。

摘　　要：以‘威猛栗子’等6个萱草属栽培品种的新生根尖为试材,采用常规染色体压片法进行倍性鉴定和核型分析,为该属植物的分类学、细胞学以及育种学等研究提供一定的理论依据。结果表明:‘威猛栗子’和‘莉莉百合’为四倍体(2n=4x=44),‘千瓣萱草’为三倍体(2n=3x=33),‘皮皮瑞卡’、‘四十二街’和‘渠县黄花’均为二倍体(2n=2x=22)。6个萱草属栽培品种的染色体类型主要包括m、sm和st;核型类型除‘威猛栗子’为2B型,其余均为3B型。‘皮皮瑞卡’和‘四十二街’的染色体出现了随体,其余均无随体出现。6个萱草属栽培品种的染色体长度比的范围为2.01~2.44,核型不对称系数范围为64.55%~71.86%。Taking the new root tips of six Hemerocallis cultivars such as‘Mighty Chestnut’as test materials,the ploidy identification and karyotype analysis were carried out by conventional chromosome pressing method,which provided a theoretical basis for the taxonomic,cytological and breeding studies of this genus.The results showed that‘Mighty Chestnut’and‘Lilly and petals’were tetraploid(2n=4x=44),‘Flore Pleno’were triploid(2n=3x=33),‘Paprika Flame’,‘Forty Second Street’and‘Qu Xian Huang Hua’were all diploid(2n=2x=22).The chromosome types of six Hemerocallis cultivars mainly include m,sm and st;The karyotype was 3B except for‘Mighty Chestnut’which was 2B.The chromosomes of‘Paprika Flame’and‘Forty Second Street’had satellite,and the rest had no satellite.The chromosome length ratio of the six Hemerocallis cultivars ranged from 2.01 to 2.44,and the karyotype asymmetry coefficient ranged from 64.55%to 71.86%.

关 键 词：萱草 染色体 倍性 核型 

分 类 号：Q343.244[生物学—遗传学]