2C杀配子染色体对减数分裂的作用及分析  

Function and Analysis of 2C Gamtocidal Chromosome on Meiosis

作　　者：赵丽娟[1] 赵丽伟 于金海 李集临[1] 

机构地区：[1]哈尔滨师范大学,哈尔滨150080 [2]阿城杨树乡政府农技站,哈尔滨150314 [3]黑龙江省农科院作物育种所,哈尔滨150086

出　　处：《黑龙江农业科学》2007年第3期4-6,共3页Heilongjiang Agricultural Sciences

摘　　要：“中国春”—长穗偃麦草二体附加系与“中国春”—2C二体附加系杂交,观察到F_1代减数分裂过程异常。F_1花粉母细胞减数分裂时出现了大量的单价体和一定频率的多价体;在后期Ⅰ和后期Ⅱ均看到大量的染色体断片、染色体桥、落后染色体等异常现象;在F_1末期或四分孢子中观察到大量的微核;还出现了细胞质的多极分裂。可能是由于杀配子染色体作用引起的染色体断裂和易位造成的。By crossing CS-（1-7）E″ with CS-2C″, We observed the abnormal behaviors of F1 pollen cell meiosis. There were a great of univalent and certain frequency multivalent chromosome appeared in F1. We also observed that a large number of chromosome fragment, chromosome bridge,laggards etc appeared at anaphase Ⅰ , anaphase Ⅱ and a great quantity of micro-nucleus at telophase of F1 or tetrad. It appeared cytoplasmic multipolar division in the experiment. Those aberration were probably caused by chromosome splitting and translocation made by gametocidal chromosome.

关 键 词：杀配子染色体 减数分裂 单价体 多价体 

分 类 号：S512.1[农业科学—作物学]